BULLETIN 500-MR7-4.2
MASON/MERCER EXPANSION JOINTS
9
•
90
COMPLETELY VERSATILE HANDBUILT
HEAVY DUTY EXPANSION JOINTS
PERFORMANCE FEATURES
• Pressures, vacuum ratings and temperature
tolerance as detailed inside
• Minimum 3 to 1 safety factor, rated to burst pressure
• High temperature resistant fabric reinforcement
for operating temperatures up to 400°F
• Components are pressure cured, resulting in
structurally sound, long service life
• Optional exterior coat of Hypalon
®
paint provides
additional protection against ozone weathering
and chemical exposure
CONSTRUCTION FEATURES
• Sizes range 1
1
/2" to 144" diameter
• Manufactured in one to four arches or more
in standard or longer lengths as required
• Choice of eight liner elastomers
• Choice of cover to match liner materials or different
materials for superior resistance to external conditions
• Baked Enamel, Galvanized Ductile Iron, Carbon or Stainless
Steel Split Backup Rings
• 150 lb ASA drilling is standard. Other drillings or complete-
ly customized drillings as required. Opposite flanges can
have different drillings to serve as transition pieces
• Reinforcement–Spiral steel wire or solid rings
• Hand-built to your exact specifications
• Can be built with permanent offset to compensate for
existing or designed piping misalignment
500, HT500,
600 & HT600
Series
SERIES 
The Invincible 500 is our most rugged expansion joint. They
are all hand-built by our skilled craftsmen. The
1
/4" minimum
thickness solid elastomer tube is continuous with the flange
face. Multiple plies of rubber impregnated high strength
polyester or nylon tire cord form the first pressure reinforcement
over the tube. Arch swell in response to pressure and arch
migration are virtually eliminated by criss-crossed layers of
reinforcement that pass over the arch and around steel or
ductile iron rings embedded on both sides at the base of the
arch. Body swell is controlled by high strength fabric or spiral
steel wire. Large diameter joints are often built with steel rings
in place of the wire when in addition to internal pressure,
external pressure resistance is important. External pressure
may come from deep burial, shallow embankment under
roadways or joints inside tanks.
Uncured rubber is used to fill the voids between the spiraled
wire or steel rings. A minimum of two additional plies provide
protection to the carcass and the cover rubber layer is a
minimum of
1
/8". All of the layered reinforcement and cover
materials are carried through the full faced flanges.
Flanges are brought to thickness by heavy duty clamps that
close the steel flange forms. The body is pressure wrapped
by layers of nylon tape. The joint is cured in a pressurized
thermostatically controlled steam chamber or in an oven for
optimum performance.
After the wraps and forms are removed, the final product is
a tough homogeneous expansion joint customized to safely
handle the intended service. A variety of tube, cover and carcass
elastomers are available and selected to provide superior
chemical and aging resistance in temperatures ranging from
-30° to 250°F (See Bulletin CRG-MR1).
SERIES HT
The Invincible HT500 has all the construction features of the 500
combined with High Temperature capability. DuPont
™
Kevlar
®
or
other heat resistant fabrics replace the polyester or nylon. The
tube and cover are either EPDM or Viton
®
for full pressure ser-
vice up to 350°F and 400°F respectively.
SERIES 
The Invincible 600 has a built in solid steel ring locked in place
by reinforcement materials at the arch crown. This enables the
600 to handle vacuum conditions in excess of those listed for the
500 in multiple arch joints.
SERIES HT
The Invincible HT600 has all the construction features of the 600
combined with High Temperature capability. DuPont
™
Kevlar
®
or
other heat resistant fabrics replace the polyester or nylon. The
tube and cover are either EPDM or Viton
®
for full vacuum service
up to 350°F and 400°F respectively.
MERCER INVINCIBLE
HEAVY DUTY
EXPANSION JOINTS
www.interflex.co.uk
BULLETIN 500-MR7-4.2
MASON INDUSTRIES | MASON-IND.COM
9
•
91
Mercer can custom design
joints for most special
requirements.
DIN
PN
JIS
British
MISMATCHED
FLANGES
OVERSEAS
FLANGES
OFFSET JOINTS UNPARALLEL
FACES
ASA
150
ASA
300
LONGER OR SHORTER
FACE TO FACE
BACKUP RINGS
Standard expansion joints are furnished with ASA-150 backup
rings. Series ASA-300, DIN, PN, JIS and British Standards are also
available, but sometimes at higher cost. Check factory for pricing.
FILLED ARCHES
All of the styles are available with filled arch construction for
use with heavy slurries. The continuous liner prevents material
build-up in the arch. Filled arch joints have 50% of open arch
movements.
ANCHORED PIPING APPLICATIONS
Series 500, HT500, 600 & HT600 expansion joints used to
compensate for thermal movement in properly anchored &
guided piping systems generally do not require control rods,
provided piping movements are within the allowables shown
on pages 9
•
93 - 9
•
96.
If, as an added precaution, designers elect to use control rods
in anchored systems, the expansion joint should be installed
at its exact published face to face length. When control rod
assemblies are installed, the stop nuts should be backed
away from the gusset plate a distance equal to the allowable
extension of the joint (See tables, pages 9
•
93 - 9
•
96). This will
prevent overextension of the joint. Compression sleeves should
also be employed. The compression sleeves are cut at the
factory to the proper length to prevent over compression.
Anchor
Gusset
Plate
Control Rod
Assembly
Compression
Sleeves
Anchor
Axial Extension
(See Pages 9•93 - 9•96)
Rubber Washer
& Steel Washer
SPRING MOUNTED EQUIPMENT
OTHER UNANCHORED APPLICATIONS
Series 500, HT500, 600 & HT600 expansion joints used as noise
& vibration dampeners installed in unanchored piping will
overextend in response to system pressure & must be installed
with control rod assemblies.
Adjust the spring mountings so the equipment is at proper
elevation and level. Leave a space between pipe flanges equal
to the expansion joint’s face to face length shown on pages
9
•
93 - 9
•
96. Install expansion joint and control rod assemblies.
Control rod stop nuts should be finger tight against gusset
plate. Lock in position with lock nut. Control rod assemblies will
prevent extension of expansion joint & will not allow transfer of
thrust load to spring supports of equipment and/or piping.
Control Rod Stop Nut
Finger Tight Against
Gusset Plate
Rubber Washer
& Steel Washer
Gusset
Plate
Control Rod
Assembly
Installed Exact at
Published Face to Face
Installed Exact
at Published
Face to Face
CUSTOM DESIGNS
Published dimensional data is for “Standard” joints. However,
about 50% of Mercer business consists of building custom joints
such as:
www.interflex.co.uk
MASON/MERCER EXPANSION JOINTS
BULLETIN
500-MR7-4.2
9
•
92
SERIES   
MATERIAL AVAILABILITY
& OPERATING TEMPERATURES
SERIES HT  HT
MATERIAL AVAILABILITY
& OPERATING TEMPERATURES
Series
500 &
600
Standard Materials
Max.
Oper.
Tube Cover Temp.
B Butyl Butyl 250°F
E EPDM EPDM 250°F
H Hypalon
®
Hypalon
®
225°F
HN Hypalon
®
Neoprene
225°F
N Neoprene Neoprene 225°F
NH Neoprene Hypalon 225°F
Ni Nitrile Nitrile 210°F
NiN Nitrile Neoprene
210°F
NR Neoprene Natural 180°F
R Natural Natural 180°F
RN Natural Neoprene 180°F
V Viton
®
Viton
®
250°F
Series
HT500 &
HT600
High Temperature
Material
Max.
Oper.
Cover Temp.
K-E EPDM 350°F
K-V Viton
®
400°F
Resilient Arch
Optional
Coating of
Hypalon
®
Paint
Overall Flange
Thickness
I.D. Same
as Pipe Size
Face
to
Face
O.D.
Flanges Integral
with Body
Steel or Ductile
Split Backup Ring
Embedded Solid Steel
Wire or Other Radial
Reinforcement
Carcass Made of Multiple Plies
of Tough, Rubber Impregnated
Fabric or Tire Cord
Rubber Filler Between Rings or Wire
Steel Ring Arch
Anchors
Smooth
Leak Proof
Tube
Rubber Filler
Between Wire
1
/4" Tube
Steel Ring
Arch Anchors
Wire Reinforcement
Steel or Ductile
Split Backup
Ring
Multiple Layered
Reinforcement
1
/8" Cover Reinforcement Layers Wrap
Around Steel Arch Rings
Providing Minimum of 3
Additional Layers Over Arch
30 Durometer Filler
OPTIONAL FILLED
ARCH CONSTRUCTION
TYPICAL MULTIPLE
ARCH CONSTRUCTION
Series
500, HT500,
600 & HT600
Distributor:
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • UK
Tel.: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk
www.interflex.co.uk
BULLETIN 500-MR7-4.2
MASON INDUSTRIES | MASON-IND.COM
9
•
93
SERIES   
MATERIAL AVAILABILITY
& OPERATING TEMPERATURES
SERIES HT  HT
MATERIAL AVAILABILITY
& OPERATING TEMPERATURES
 ARCH
STYLE 501 & HT501
CAUTION
1. Do not install any of the products in this bulletin at pressures or
temperatures higher than the published ratings.
2. Series 500, HT500, 600 and HT600 must be installed against
standard
1
/16" raised faced or flat faced flanges. Do not install
them against recessed flanges such as Victaulic without calling
the factory for proper steel filler flanges. If our rubber flanges do
not have full bearing, the expansion joint will be damaged and
leak or fail.
3. Pipe system flanges must be smooth and flat. Screw-in brass
inserts such as those used in check valves can damage the rubber
faces if they project above the cast flange face.
4. Water-type check valves must exactly center on the rubber flanges.
Valve O.D. and I.D. must conform to raised face dimensions.
5. Use control rods as listed on page 9•91.
6. Check Chemical Resistance Guide CRG-MR1 (page 9•59) for service
elastomer compatibility.
7. Follow installation instructions on page 9•97.
*
Reduce movements 50% when using filled arches.
†
Higher pressure joints are special design- Advise factory of requirements.
Flange
Outside
Dia.
Face
to
Face
Overall Flange
Thickness (in)
Bolt
Circle
Dia.
Bolt
Hole
Dia.
Allowable Movements
Rated
Working
Pressure
†
Minimum
Burst
Pressure
†
Pipe
Size
No.
of
Holes
Axial
Compression
Axial
Extension
Lateral
Deflection
Degrees
Angular
Degrees
Torsional
Vacuum
Rating
(in) (in) (in) Steel Ductile (in) (in) (in) (in) (in) (degrees) (degrees) (psig) (psig) (in Hg)
1
1
/2 5 6
7
/8 1 3
7
/8 4
5
/8
3
/4
1
/2
1
/2 18.5 3 250 750 30
2 6 6
7
/8 1 4
3
/4 4
3
/4
3
/4
1
/2
1
/2 14.5 3 250 750 30
2
1
/2 7 6
7
/8 1 5
1
/2 4
3
/4
3
/4
1
/2
1
/2 11.5 3 250 750 30
3 7
1
/2 6
7
/8 1 6 4
3
/4
3
/4
1
/2
1
/2 10.0 3 250 750 30
4 9 6
7
/8 1 7
1
/2 8
3
/4
3
/4
1
/2
1
/2 7.5 3 250 750 30
5 10 6
7
/8 1 8
1
/2 8
7
/8
3
/4
1
/2
1
/2 6.0 3 250 750 30
6 11 6
7
/8 1 9
1
/2 8
7
/8
3
/4
1
/2
1
/2 5.5 3 250 750 30
8 13
1
/2 6
7
/8 1 11
3
/4 8
7
/8
3
/4
1
/2
1
/2 5.0 3 250 750 30
10 16 8 1 1
1
/8 14
1
/4 12 1 1
5
/8
5
/8 4.5 3 250 750 30
12 19 8 1 1
1
/8 17 12 1 1
5
/8
5
/8 3.8 3 250 750 30
14 21 8 1 1
1
/8 18
3
/4 12 1
1
/8 1
5
/8
5
/8 3.3 2 250 750 30
16 23
1
/2 8 1 1
1
/8 21
1
/4 16 1
1
/8 1
5
/8
5
/8 2.8 2 250 750 30
18 25 8 1
1
/8 1
1
/4 22
3
/4 16 1
1
/4 1
5
/8
5
/8 2.5 1 250 750 30
20 27
1
/2 8 1
1
/8 1
1
/4 25 20 1
1
/4 1
5
/8
5
/8 2.5 1 250 750 30
22 29
1
/2 10 1
1
/8 1
1
/4 27
1
/4 20 1
3
/8 1
1
/4
3
/4
5
/8 2.3 1 250 750 30
24 32 10 1
1
/8 1
1
/4 29
1
/2 20 1
3
/8 1
1
/4
3
/4
5
/8 2.0 1 250 750 30
26 34
1
/4 10 1
1
/8 1
1
/4 31
3
/4 24 1
3
/8 1
1
/4
3
/4
5
/8 2.0 1 250 750 30
28 36
1
/2 10 1
1
/8 1
1
/4 34 28 1
3
/8 1
1
/4
3
/4
5
/8 2.0 1 250 750 30
30 38
3
/4 10 1
1
/8 1
1
/4 36 28 1
3
/8 1
1
/4
3
/4
5
/8 2.0 1 250 750 30
34 43
3
/4 10 1
1
/8 1
1
/4 40
1
/2 32 1
5
/8 1
1
/4
3
/4
5
/8 1.8 1 250 750 30
36 46 10 1
1
/8 1
1
/4 42
3
/4 32 1
5
/8 1
1
/4
3
/4
5
/8 1.5 1 250 750 30
40 50
3
/4 10 1
1
/8 1
1
/4 47
1
/4 36 1
5
/8 1
1
/4
3
/4
5
/8 1.5 1 175 525 30
42 53 12 1
1
/8 1
1
/4 49
1
/2 36 1
5
/8 1
1
/2
7
/8
3
/4 1.5 1 175 525 30
44 55
1
/4 12 1
1
/8 1
1
/4 51
3
/4 40 1
5
/8 1
1
/2
7
/8
3
/4 1.5 1 175 525 30
48 59
1
/2 12 1
1
/8 1
1
/4 56 44 1
5
/8 1
1
/2
7
/8
3
/4 1.5 1 175 525 30
50 61
3
/4 12 1
1
/8 1
1
/4 58
1
/4 44 1
7
/8 1
1
/2
7
/8
3
/4 1.3 1 150 450 30
54 66
1
/4 12 1
1
/8 1
1
/4 62
3
/4 44 1
7
/8 1
1
/2
7
/8
3
/4 1.3 1 150 450 30
56 68
3
/4 12 1
1
/8 1
1
/4 65 48 1
7
/8 1
1
/2
7
/8
3
/4 1.3 1 100 300 30
60 73 12 1
1
/8 1
1
/4 69
1
/4 52 2 1
1
/2
7
/8
3
/4 1.0 1 100 300 30
62 75
3
/4 12 1
1
/8 1
1
/4 71
3
/4 52 2 1
1
/2
7
/8
3
/4 1.0 1 100 300 30
66 80 12 1
1
/8 1
1
/4 76 52 2 1
1
/2
7
/8
3
/4 1.0 1 100 300 30
72 86
1
/2 12 1
1
/8 1
1
/4 82
1
/2 60 2 1
1
/2
7
/8
3
/4 0.9 1 100 300 30
78 93 12 1
1
/8 1
1
/4 88
3
/4 60 2
1
/8 1
1
/2
7
/8
3
/4 0.9 1 100 300 30
84 99
3
/4 12 1
1
/8 1
1
/4 95
1
/2 64 2
1
/8 1
1
/2
7
/8
3
/4 0.8 1 100 300 30
90
106
1
/2 12 1
1
/8 1
1
/4 102
1
/4 68 2
1
/4 1
1
/2
7
/8
3
/4 0.8 1 75 225 30
96 113
1
/4 12 1
1
/8 1
1
/4 108
1
/2 68 2
1
/2 1
1
/2
7
/8
3
/4 0.7 1 75 225 30
98 115
1
/2 12 1
1
/4 1
3
/8 110
3
/4 68 2
1
/2 2
1
/4 1 1
1
/8 0.6 1 50 150 30
100 117
3
/4 12 1
1
/4 1
3
/8 113 68 2
1
/2 2
1
/4 1 1
1
/8 0.6 1 35 105 30
102 120 12 1
1
/4 1
3
/8 114
1
/2 72 2
1
/2 2
1
/4 1 1
1
/8 0.6 1 35 105 30
108 126
3
/4 12 1
1
/4 1
3
/8 120
3
/4 72 2
1
/2 2
1
/4 1 1
1
/8 0.4 1 35 105 30
120 140
1
/4 12 1
1
/4 1
3
/8 132
3
/4 76 2
1
/2 2
1
/4 1 1
1
/8 0.4 1 25 75 30
132 153
3
/4 12 1
1
/4 1
3
/8 145
3
/4 80 2
1
/2 2
1
/4 1 1
1
/8 0.3 1 25 75 30
144 167
1
/4 12 1
1
/4 1
3
/8 158
1
/4 84 2
1
/2 2
1
/4 1 1
1
/8 0.1 1 25 75 30
STYLE 501 & HT501 OPEN ARCH DIMENSIONS, ALLOWABLE MOVEMENTS
*
& PRESSURES
†
www.interflex.co.uk
MASON/MERCER EXPANSION JOINTS
BULLETIN 500-MR7-4.2
9
•
94
 ARCH
STYLE 502 & HT502, 602 & HT602
Flange
Outside
Dia.
Face
to
Face
Overall Flange
Thickness (in)
Bolt
Circle
Dia.
Bolt
Hole
Dia.
Allowable Movements
Rated
Working
Pressure
†
Minimum
Burst
Pressure
†
502,
HT502
Vacuum
602,
HT602
Vacuum
Pipe
Size
No.
of
Holes
Axial
Compression
Axial
Extension
Lateral
Deflection
Degrees
Angular
Degrees
Torsional
(in) (in) (in) Steel Ductile (in) (in) (in) (in) (in) (degrees) (degrees) (psig) (psig) (in Hg) (in Hg)
1
1
/2 5 10
7
/8 1 3
7
/8 4
5
/8 1
1
/2 1 1 23.5 5 180 540 30
—
2 6 10
7
/8 1 4
3
/4 4
3
/4 1
1
/2 1 1 19.5 5 180 540 30
—
2
1
/2 7 10
7
/8 1 5
1
/2 4
3
/4 1
1
/2 1 1 16.5 5 180 540 30
—
3 7
1
/2 10
7
/8 1 6 4
3
/4 1
1
/2 1 1 15.5 5 180 540 30
—
4 9 10
7
/8 1 7
1
/2 8
3
/4 1
1
/2 1 1 12.5 5 180 540 30
—
5 10 10
7
/8 1 8
1
/2 8
7
/8 1
1
/2 1 1 11.0 5 180 540 30
—
6 11 10
7
/8 1 9
1
/2 8
7
/8 1
1
/2 1 1 10.5 5 180 540 30
—
8 13
1
/2 10
7
/8 1 11
3
/4 8
7
/8 1
1
/2 1 1 10.0 5 180 540 30
—
10 16 12 1 1
1
/8 14
1
/4 12 1 2 1
1
/4 1
1
/4 9.5 5 180 540 30
—
12 19 12 1 1
1
/8 17 12 1
1
/8 2 1
1
/4 1
1
/4 8.8 5 180 540 30
—
14 21 12 1 1
1
/8 18
3
/4 12 1
1
/8 2 1
1
/4 1
1
/4 8.3 4 180 540 30
—
16 23
1
/2 12 1 1
1
/8 21
1
/4 16 1
1
/8 2 1
1
/4 1
1
/4 7.8 4 180 540 30
—
18 25 12 1
1
/8 1
1
/4 22
3
/4 16 1
1
/4 2 1
1
/4 1
1
/4 7.5 3 180 540 30
—
20 27
1
/2 12 1
1
/8 1
1
/4 25 20 1
1
/4 2 1
1
/4 1
1
/4 7.5 3 180 540 30
—
22 29
1
/2 14 1
1
/8 1
1
/4 27
1
/4 20 1
3
/8 2
1
/2 1
1
/2 1
1
/4 7.3 3 180 540 30
—
24 32 14 1
1
/8 1
1
/4 29
1
/2 20 1
3
/8 2
1
/2 1
1
/2 1
1
/4 7.0 3 180 540 30
—
26 34
1
/4 14 1
1
/8 1
1
/4 31
3
/4 24 1
3
/8 2
1
/2 1
1
/2 1
1
/4 7.0 3 180 540 30
—
28 36
1
/2 14 1
1
/8 1
1
/4 34 28 1
3
/8 2
1
/2 1
1
/2 1
1
/4 7.0 3 180 540 20 30
30 38
3
/4 14 1
1
/8 1
1
/4 36 28 1
3
/8 2
1
/2 1
1
/2 1
1
/4 7.0 3 180 540 20 30
34 43
3
/4 14 1
1
/8 1
1
/4 40
1
/2 32 1
5
/8 2
1
/2 1
1
/2 1
1
/4 6.8 3 180 540 20 30
36 46 14 1
1
/8 1
1
/4 42
3
/4 32 1
5
/8 2
1
/2 1
1
/2 1
1
/4 6.5 3 180 540 20 30
40 50
3
/4 14 1
1
/8 1
1
/4 47
1
/4 36 1
5
/8 2
1
/2 1
1
/2 1
1
/4 6.5 3 130 390 20 30
42 53 16 1
1
/8 1
1
/4 49
1
/2 36 1
5
/8 3 1
3
/4 1
1
/2 6.5 2 130 390 15 30
44 55
1
/4 16 1
1
/8 1
1
/4 51
3
/4 40 1
5
/8 3 1
3
/4 1
1
/2 6.5 2 130 390 15 30
48 59
1
/2 16 1
1
/8 1
1
/4 56 44 1
5
/8 3 1
3
/4 1
1
/2 6.5 2 130 390 15 30
50 61
3
/4 16 1
1
/8 1
1
/4 58
1
/4 44 1
7
/8 3 1
3
/4 1
1
/2 6.3 2 110 330 15 30
54 66
1
/4 16 1
1
/8 1
1
/4 62
3
/4 44 1
7
/8 3 1
3
/4 1
1
/2 6.3 2 110 330 15 30
56 68
3
/4 16 1
1
/8 1
1
/4 65 48 1
7
/8 3 1
3
/4 1
1
/2 6.3 2 75 225 15 30
60 73 16 1
1
/8 1
1
/4 69
1
/4 52 2 3 1
3
/4 1
1
/2 6.0 2 75 225 15 30
62 75
3
/4 16 1
1
/8 1
1
/4 71
3
/4 52 2 3 1
3
/4 1
1
/2 6.0 2 75 225 15 30
66 80 16 1
1
/8 1
1
/4 76 52 2 3 1
3
/4 1
1
/2 6.0 2 75 225 15 30
72 86
1
/2 16 1
1
/8 1
1
/4 82
1
/2 60 2 3 1
3
/4 1
1
/2 5.9 2 75 225 15 30
78 93 16 1
1
/8 1
1
/4 88
3
/4 60 2
1
/8 3 1
3
/4 1
1
/2 5.9 2 75 225 15 30
84 99
3
/4 16 1
1
/8 1
1
/4 95
1
/2 64 2
1
/8 3 1
3
/4 1
1
/2 5.8 2 75 225 15 30
90 106
1
/2 16 1
1
/8 1
1
/4 102
1
/4 68 2
1
/4 3 1
3
/4 1
1
/2 5.8 2 55 165 15 30
96 113
1
/4 16 1
1
/8 1
1
/4 108
1
/2 68 2
1
/2 3 1
3
/4 1
1
/2 5.7 2 55 165 15 30
98 115
1
/2 16 1
1
/4 1
3
/8 110
3
/4 68 2
1
/2 4
1
/2 2 2
1
/4 5.6 2 35 105 15 30
100 117
3
/4 16 1
1
/4 1
3
/8 113 68 2
1
/2 4
1
/2 2 2
1
/4 5.6 2 25 75 15 30
102 120 16 1
1
/4 1
3
/8 114
1
/2 72 2
1
/2 4
1
/2 2 2
1
/4 5.6 2 25 75 15 30
108 126
3
/4 16 1
1
/4 1
3
/8 120
3
/4 72 2
1
/2 4
1
/2 2 2
1
/4 5.4 2 25 75 15 30
120 140
1
/4 16 1
1
/4 1
3
/8 132
3
/4 76 2
1
/2 4
1
/2 2 2
1
/4 5.4 2 20 60 15 30
132 153
3
/4 16 1
1
/4 1
3
/8 145
3
/4 80 2
1
/2 4
1
/2 2 2
1
/4 5.3 2 20 60 15 30
144 167
3
/4 16 1
1
/4 1
3
/8 158
1
/4 84 2
1
/2 4
1
/2 2 2
1
/4 5.1 2 20 60 10 30
STYLE 502, HT502, 602 & HT602 OPEN ARCH DIMENSIONS, ALLOWABLE MOVEMENTS* & PRESSURES†
*
Reduce movements 50% when using filled arches.
†
Higher pressure joints are special design- Advise factory of requirements.
www.interflex.co.uk
BULLETIN 500-MR7-4.2
MASON INDUSTRIES | MASON-IND.COM
9
•
95
STYLE 502, HT502, 602 & HT602 OPEN ARCH DIMENSIONS, ALLOWABLE MOVEMENTS* & PRESSURES†
 ARCH
STYLE 503 & HT503, 603 & HT603
CAUTION
1. Do not install any of the products in this bulletin at pressures or
temperatures higher than the published ratings.
2. Series 500, HT500, 600 and HT600 must be installed against
standard
1
/16" raised faced or flat faced flanges. Do not install
them against recessed flanges such as Victaulic without calling
the factory for proper steel filler flanges. If our rubber flanges
do not have full bearing the expansion joint will be damaged and
leak or fail.
3. Pipe system flanges must be smooth and flat. Screw-in brass
inserts such as those used in check valves can damage the rubber
faces if they project above the cast flange face.
4. Water-type check valves must exactly center on the rubber flanges.
Valve O.D. and I.D. must conform to raised face dimensions.
5. Use control rods as listed on page 9•91.
6. Check Chemical Resistance Guide CRG-MR1 (page 9•59) for service
elastomer compatibility.
7. Follow installation instructions on page 9•97.
*
Reduce movements 50% when using filled arches.
†
Higher pressure joints are special design- Advise factory of requirements.
Flange
Outside
Dia.
Face
to
Face
Overall Flange
Thickness (in)
Bolt
Circle
Dia.
Bolt
Hole
Dia.
Allowable Movements
Rated
Working
Pressure
†
Minimum
Burst
Pressure
†
503,
HT503
Vacuum
603,
HT603
Vacuum
Pipe
Size
No.
of
Holes
Axial
Compression
Axial
Extension
Lateral
Deflection
Degrees
Angular
Degrees
Torsional
(in) (in) (in) Steel Ductile (in) (in) (in) (in) (in) (degrees) (degrees) (psig) (psig) (in Hg) (in Hg)
1
1
/2 5 14
7
/8 1 3
7
/8 4
5
/8 2
1
/4 1
1
/2 1
1
/2 28.5 7 150 450 15 30
2 6 14
7
/8 1 4
3
/4 4
3
/4 2
1
/4 1
1
/2 1
1
/2 24.5 7 150 450 15 30
2
1
/2 7 14
7
/8 1 5
1
/2 4
3
/4 2
1
/4 1
1
/2 1
1
/2 21.5 7 150 450 15 30
3 7
1
/2 14
7
/8 1 6 4
3
/4 2
1
/4 1
1
/2 1
1
/2 19.5 7 150 450 15 30
4 9 14
7
/8 1 7
1
/2 8
3
/4 2
1
/4 1
1
/2 1
1
/2 17.5 7 150 450 15 30
5 10 14
7
/8 1 8
1
/2 8
7
/8 2
1
/4 1
1
/2 1
1
/2 16.0 7 150 450 15 30
6 11 14
7
/8 1 9
1
/2 8
7
/8 2
1
/4 1
1
/2 1
1
/2 15.5 7 150 450 15 30
8 13
1
/2 14
7
/8 1 11
3
/4 8
7
/8 2
1
/4 1
1
/2 1
1
/2 15.0 7 150 450 15 30
10 16 16 1 1
1
/8 14
1
/4 12 1 3 1
7
/8 1
7
/8 14.9 7 150 450 15 30
12 19 16 1 1
1
/8 17 12 1 3 1
7
/8 1
7
/8 12.8 7 150 450 15 30
14 21 16 1 1
1
/8 18
3
/4 12 1
1
/8 3 1
7
/8 1
7
/8 12.8 6 150 450 15 30
16 23
1
/2 16 1 1
1
/8 21
1
/4 16 1
1
/8 3 1
7
/8 1
7
/8 12.8 6 150 450 15 30
18 25 16 1
1
/8 1
1
/4 22
3
/4 16 1
1
/4 3 1
7
/8 1
7
/8 12.5 5 150 450 15 30
20 27
1
/2 16 1
1
/8 1
1
/4 25 20 1
1
/4 3 1
7
/8 1
7
/8 12.5 5 150 450 15 30
22 29
1
/2 18 1
1
/8 1
1
/4 27
1
/4 20 1
3
/8 3
3
/4 2
1
/4 1
7
/8 12.3 5 150 450 15 30
24 32 18 1
1
/8 1
1
/4 29
1
/2 20 1
3
/8 3
3
/4 2
1
/4 1
7
/8 12.0 5 150 450 15 30
26 34
1
/4 18 1
1
/8 1
1
/4 31
3
/4 24 1
3
/8 3
3
/4 2
1
/4 1
7
/8 12.0 5 150 450 15 30
28 36
1
/2 18 1
1
/8 1
1
/4 34 28 1
3
/8 3
3
/4 2
1
/4 1
7
/8 12.0 5 150 450 10 30
30 38
3
/4 18 1
1
/8 1
1
/4 36 28 1
3
/8 3
3
/4 2
1
/4 1
7
/8 12.0 5 150 450 10 30
34 43
3
/4 18 1
1
/8 1
1
/4 40
1
/2 32 1
5
/8 3
3
/4 2
1
/4 1
7
/8 11.8 5 150 450 10 30
36 46 18 1
1
/8 1
1
/4 42
3
/4 32 1
5
/8 3
3
/4 2
1
/4 1
7
/8 11.5 5 150 450 10 30
40 50
3
/4 18 1
1
/8 1
1
/4 47
1
/4 36 1
5
/8 3
3
/4 2
1
/4 1
7
/8 11.5 5 105 315 10 30
42 53 20 1
1
/8 1
1
/4 49
1
/2 36 1
5
/8 4
1
/2 2
5
/8 2
1
/4 11.5 4 105 315 10 30
44 55
1
/4 20 1
1
/8 1
1
/4 51
3
/4 40 1
5
/8 4
1
/2 2
5
/8 2
1
/4 11.5 4 105 315 10 30
48 59
1
/2 20 1
1
/8 1
1
/4 56 44 1
5
/8 4
1
/2 2
5
/8 2
1
/4 11.5 4 105 315 10 30
50 61
3
/4 20 1
1
/8 1
1
/4 58
1
/4 44 1
7
/8 4
1
/2 2
5
/8 2
1
/4 11.3 4 90 270 10 30
54 66
1
/4 20 1
1
/8 1
1
/4 62
3
/4 44 1
7
/8 4
1
/2 2
5
/8 2
1
/4 11.3 4 90 270 10 30
56 68
3
/4 20 1
1
/8 1
1
/4 65 48 1
7
/8 4
1
/2 2
5
/8 2
1
/4 11.3 4 60 180 10 30
60 73 20 1
1
/8 1
1
/4 69
1
/4 52 2 4
1
/2 2
5
/8 2
1
/4 11.0 4 60 180 10 30
62 75
3
/4 20 1
1
/8 1
1
/4 71
3
/4 52 2 4
1
/2 2
5
/8 2
1
/4 11.0 4 60 180 10 30
66 80 20 1
1
/8 1
1
/4 76 52 2 4
1
/2 2
5
/8 2
1
/4 11.0 4 60 180 10 30
72 86
1
/2 20 1
1
/8 1
1
/4 82
1
/2 60 2 4
1
/2 2
5
/8 2
1
/4 10.9 4 60 180 10 30
78 93 20 1
1
/8 1
1
/4 88
3
/4 60 2
1
/8 4
1
/2 2
5
/8 2
1
/4 10.9 4 60 180 10 30
84 99
3
/4 20 1
1
/8 1
1
/4 95
1
/2 64 2
1
/8 4
1
/2 2
5
/8 2
1
/4 10.8 4 60 180 10 30
90 106
1
/2 20 1
1
/8 1
1
/4 102
1
/4 68 2
1
/4 4
1
/2 2
5
/8 2
1
/4 10.8 4 45 135 10 30
96 113
1
/4 20 1
1
/8 1
1
/4 108
1
/2 68 2
1
/2 4
1
/2 2
5
/8 2
1
/4 10.7 4 45 135 10 30
98 115
1
/2 20 1
1
/4 1
3
/8 110
3
/4 68 2
1
/2 6
3
/4 3 3
3
/8 10.6 3 30 90 10 30
100 117
3
/4 20 1
1
/4 1
3
/8 113 68 2
1
/2 6
3
/4 3 3
3
/8 10.6 3 30 90 10 30
102 120 20 1
1
/4 1
3
/8 114
1
/2 72 2
1
/2 6
3
/4 3 3
3
/8 10.6 3 30 90 10 30
108 126
3
/4 20 1
1
/4 1
3
/8 120
3
/4 72 2
1
/2 6
3
/4 3 3
3
/8 10.4 3 25 75 10 30
120 140
1
/4 20 1
1
/4 1
3
/8 132
3
/4 76 2
1
/2 6
3
/4 3 3
3
/8 10.4 3 25 75 10 30
132 153
3
/4 20 1
1
/4 1
3
/8 145
3
/4 80 2
1
/2 6
3
/4 3 3
3
/8 10.3 3 25 75 10 30
144 167
3
/4 20 1
1
/4 1
3
/8 158
1
/4 84 2
1
/2 6
3
/4 3 3
3
/8 10.1 3 25 75 8 30
STYLE 503, HT503, 603 & HT603 OPEN ARCH DIMENSIONS, ALLOWABLE MOVEMENTS
*
& PRESSURES
†
www.interflex.co.uk
MASON/MERCER EXPANSION JOINTS
BULLETIN 500-MR7-4.2
9
•
96
 ARCH
STYLE 504 & HT504, 604 & HT604
*
Reduce movements 50% when using filled arches.
†
Higher pressure joints are special design- Advise factory of requirements.
Flange
Outside
Dia.
Face
to
Face
Overall Flange
Thickness (in)
Bolt
Circle
Dia.
Bolt
Hole
Dia.
Allowable Movements
Rated
Working
Pressure
†
Minimum
Burst
Pressure
†
504,
HT504
Vacuum
604,
HT604
Vacuum
Pipe
Size
No.
of
Holes
Axial
Compression
Axial
Extension
Lateral
Deflection
Degrees
Angular
Degrees
Torsional
(in) (in) (in) Steel Ductile (in) (in) (in) (in) (in) (degrees) (degrees) (psig) (psig) (in Hg) (in Hg)
1
1
/2 5 18
7
/8 1 3
7
/8 4
5
/8 3 2 2 33.5 8 150 450 15 30
2 6 18
7
/8 1 4
3
/4 4
3
/4 3 2 2 29.5 8 150 450 15 30
2
1
/2 7 18
7
/8 1 5
1
/2 4
3
/4 3 2 2 26.5 8 150 450 15 30
3 7
1
/2 18
7
/8 1 6 4
3
/4 3 2 2 24.5 8 150 450 15 30
4 9 18
7
/8 1 7
1
/2 8
3
/4 3 2 2 22.5 8 150 450 15 30
5 10 18
7
/8 1 8
1
/2 8
7
/8 3 2 2 21.0 8 150 450 15 30
6 11 18
7
/8 1 9
1
/2 8
7
/8 3 2 2 20.5 8 150 450 15 30
8 13
1
/2 18
7
/8 1 11
3
/4 8
7
/8 3 2 2 20.0 8 150 450 15 30
10 16 20 1 1
1
/8 14
1
/4 12 1 4 2
1
/2 2
1
/2 19.9 8 150 450 15 30
12 19 20 1 1
1
/8 17 12 1 4 2
1
/2 2
1
/2 17.8 8 150 450 15 30
14 21 20 1 1
1
/8 18
3
/4 12 1
1
/8 4 3 2
1
/2 17.8 7 150 450 15 30
16 23
1
/2 20 1 1
1
/8 21
1
/4 16 1
1
/8 4 3 2
1
/2 17.8 7 150 450 15 30
18 25 20 1
1
/8 1
1
/4 22
3
/4 16 1
1
/4 4 3 2
1
/2 17.5 6 150 450 15 30
20 27
1
/2 20 1
1
/8 1
1
/4 25 20 1
1
/4 4 3 2
1
/2 17.5 6 150 450 15 30
22 29
1
/2 22 1
1
/8 1
1
/4 27
1
/4 20 1
3
/8 5 3 2
1
/2 17.3 6 150 450 15 30
24 32 22 1
1
/8 1
1
/4 29
1
/2 20 1
3
/8 5 3 2
1
/2 17.0 6 150 450 15 30
26 34
1
/4 22 1
1
/8 1
1
/4 31
3
/4 24 1
3
/8 5 3 2
1
/2 17.0 6 150 450 15 30
28 36
1
/2 22 1
1
/8 1
1
/4 34 28 1
3
/8 5 3 2
1
/2 17.0 6 150 450 10 30
30 38
3
/4 22 1
1
/8 1
1
/4 36 28 1
3
/8 5 3
1
/2 3 17.0 6 150 450 10 30
34 43
3
/4 22 1
1
/8 1
1
/4 40
1
/2 32 1
5
/8 5 3
1
/2 3 16.8 6 150 450 10 30
36 46 22 1
1
/8 1
1
/4 42
3
/4 32 1
5
/8 5 3
1
/2 3 16.5 6 150 450 10 30
40 50
3
/4 22 1
1
/8 1
1
/4 47
1
/4 36 1
5
/8 5 3
1
/2 3 16.5 6 105 315 10 30
42 53 24 1
1
/8 1
1
/4 49
1
/2 36 1
5
/8 6 3
1
/2 3 16.5 5 105 315 10 30
44 55
1
/4 24 1
1
/8 1
1
/4 51
3
/4 40 1
5
/8 6 3
1
/2 3 16.5 5 105 315 10 30
48 59
1
/2 24 1
1
/8 1
1
/4 56 44 1
5
/8 6 3
1
/2 3 16.5 5 105 315 10 30
50 61
3
/4 24 1
1
/8 1
1
/4 58
1
/4 44 1
7
/8 6 3
1
/2 3 16.3 5 90 270 10 30
54 66
1
/4 24 1
1
/8 1
1
/4 62
3
/4 44 1
7
/8 6 3
1
/2 3 16.3 5 90 270 10 30
56 68
3
/4 24 1
1
/8 1
1
/4 65 48 1
7
/8 6 3
1
/2 3 16.3 5 60 180 10 30
60 73 24 1
1
/8 1
1
/4 69
1
/4 52 2 6 3
1
/2 3 16.0 5 60 180 10 30
62 75
3
/4 24 1
1
/8 1
1
/4 71
3
/4 52 2 6 3
1
/2 3 16.0 5 60 180 10 30
66 80 24 1
1
/8 1
1
/4 76 52 2 6 3
1
/2 3 16.0 5 60 180 10 30
72 86
1
/2 24 1
1
/8 1
1
/4 82
1
/2 60 2 6 3
1
/2 3 15.9 5 60 180 10 30
78 93 24 1
1
/8 1
1
/4 88
3
/4 60 2
1
/8 6 3
1
/2 3 15.9 5 60 180 10 30
84 99
3
/4 24 1
1
/8 1
1
/4 95
1
/2 64 2
1
/8 6 3
1
/2 3 15.8 5 60 180 10 30
90 106
1
/2 24 1
1
/8 1
1
/4 102
1
/4 68 2
1
/4 6 3
1
/2 3 15.8 5 45 135 10 30
96 113
1
/4 24 1
1
/8 1
1
/4 108
1
/2 68 2
1
/4 6 3
1
/2 3 15.7 5 45 135 10 30
98 115
1
/2 24 1
1
/4 1
3
/8 110
3
/4 68 2
1
/2 9 4 4
1
/2 15.6 4 30 90 10 30
100 117
3
/4 24 1
1
/4 1
3
/8 113 68 2
1
/2 9 4 4
1
/2 15.6 4 30 90 10 30
102 120 24 1
1
/4 1
3
/8 114
1
/2 72 2
1
/2 9 4 4
1
/2 15.6 4 30 90 10 30
108 126
3
/4 24 1
1
/4 1
3
/8 120
3
/4 72 2
1
/2 9 4 4
1
/2 15.4 4 25 75 10 30
120 140
1
/4 24 1
1
/4 1
3
/8 132
3
/4 76 2
1
/2 9 4 4
1
/2 15.4 4 25 75 10 30
132 153
3
/4 24 1
1
/4 1
3
/8 145
3
/4 80 2
1
/2 9 4 4
1
/2 15.3 4 25 75 10 30
144 167
3
/4 24 1
1
/4 1
3
/8 158
1
/4 84 2
1
/2 9 4 4
1
/2 15.1 4 25 75 8 30
STYLE 504, HT504, 604 & HT604 OPEN ARCH DIMENSIONS, ALLOWABLE MOVEMENTS* & PRESSURES†
www.interflex.co.uk
BULLETIN 500-MR7-4.2
MASON INDUSTRIES | MASON-IND.COM
9
•
97
Installation Instructions - 500, HT500, 600 & HT600
IMPORTANT
a. Do not weld in vicinity of expansion joint.
b. Do not lift expansion joint by bolt holes; use padded
sling.
c. Never operate joint beyond its rated temperature,
pressure or movements (see
pages 9•93 - 9•96).
d. Mating flanges must be flat or raised face. Do not
mate with contoured flanges such as victaulic or
similar configurations.
e. Check for chemical compatibility with the ordered material.
1. All pipelines must be properly supported, anchored and
guided so joints do not carry pipe or thrust loads.
2. If piping is not anchored, control units must be used.
3. Use of control units and thrust sleeves will not protect
piping in anchored situations. Expansion joints must be
selected for adequate movement capability.
4. Piping should be aligned. Misalignment or improper face
to face openings will reduce the allowable motion by the
initial inaccuracy. Joints are often damaged if forced into
position.
5. Apply a thin film of graphite, dispersed in glycerin or
water to the rubber flange face and between the backup
ring and the back of the rubber flange, to prevent rubber
adhering to the mating metal flange for easy removal of
the joint without damage. No gaskets or gasket sealants
should be used.
6. I nstall bolts from the backup ring side to avoid bolt
projections cutting the cover. If this is impossible, bolts
should not project more than
1
/8" past the nuts. Use
washers over split ring gaps.
7. Unlike tightening hard flanges, tighten bolts in series
making at least three complete circuits of each flange.
Flanges will accept full bolt torque.
8. A fter system is in service at operating temperature, check
the flange bolts and retighten as necessary. Repeat in a
few weeks or if leaks develop. It is normal for rubber flang-
es to relax after initial installation. Check periodically until
bolts remain tight.
9. A ny gouges or cuts in the cover caused during installation
should be inspected and sealed.
10. I f control rods are used, the clearance between the
rubber washer and the gusset plate should be the
allowable axial elongation, if the expansion joint is installed
at the published face to face. We do not recommend
precompression or extension as general practice, but if the
joint is compressed, the gap is increased by the decrease
in length. If installed elongated, the gap is decreased by
the increase in length. Hold one end against the control
rod plate and the washers against the nut on the other
end when measuring the gap.
EXAMPLES
6 " - 500 – Allowable Extension
1
/2"
1. 6" - 500 is installed at published 6" face to face
dimension.
Set control rod gap to
1
/2".
2. 6" - 500 is installed 5
3
/4" long.
Set control rod gap to
1
/2" plus 1/4" =
3
/4"
3. 6" - 500 is installed 6
1
/4" long.
Set control rod gap to
1
/2" minus
1
/4" =
1
/4"
11. I f compression sleeves are used, no setting is required as
they are furnished to proper length.
12. I f these instructions are not strictly adhered to, the Mercer
One-Year Guarantee is void. Joints should be checked at a
maximum of one year intervals for signs of cracking and
hardening. Expansion joints showing these symptoms
must be replaced regardless of age.
Distributor:
Interflex Hose & Bellows Ltd. • www.interflex.co.uk
Ludlow Eco Park • Ludlow • Shropshire • SY8 1FF • United Kingdom
Tel.: +44 (0)1584 878500 • Email: enquiries@interflex.co.uk
www.interflex.co.uk