BULLETIN 700-MR6-1.1
MASON/MERCER EXPANSION JOINTS
9
•
102
PERFORMANCE FEATURES
• Working pressures up to 165 psi at temperatures up to
400°F in standard models, higher pressure ratings available
• Minimum 4 to 1 safety factor, rated to burst pressure
• Teflon
®
liner is etched and permanently bonded
to expansion joint body and flange faces
• 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
• Hand-built to your exact specifications
CONSTRUCTION FEATURES
• Choice of eight cover elastomers
• Sizes up to 96" diameter
• Baked Enamel, Ductile Iron, Carbon or Stainless
Steel Split Backup Rings
• Corrosion resistant, chemically inert and non-aging
Teflon
®
liner
• Control rods to restrict excessive elongation
or compression
• High temperature resistant fabric reinforcement
for operating temperatures up to 400°F
SERIES 700
Mercer Invincible Series 700 Teflon
®
lined expansion joints
combine the advantages of Teflon
®
:
• Anti-stick properties
• Superior Strength
• Excellent chemical resistance
• Non-aging
with the advantages of Mercer’s elastomeric expansion joints:
• Isolate mechanical vibration
• Allow four-way movements (Axial, lateral, torsional,
angular), eliminating problems of pipes buckling
or pulling apart
• Long life expectancy
• Absorb pressure surges
• Eliminate electrolysis
• Small space requirements
The result is an expansion joint that offers unmatched protection
against highly corrosive fluids and extreme temperatures.
The Series 700 features either a TFE
*
or FED
**
seamless liner that
extends through the body of the expansion joint to the outer
edge of raised flange faces. The liner is fused to the body when
the joint is cured. This type of construction provides ultimate
700 &
HT700
Series
protection against chemicals seeping or leaking. An optional
coat of Hypalon
®
paint is recommended to protect the exterior
against weather, ozone and chemicals.
The Invincible Series 700 is specifically designed for the severe
service conditions found in:
• Power generating plants
• Wastewater treatment and pollution control systems
• Chemical plants
• Petrochemical and process piping systems
• Pulp and paper mills
• Where expansion joints must be able to withstand high
temperatures and corrosive materials on a daily basis
The performance of the Invincible Series 700 in these applications
is unequaled by plastic, metallic or other elastomeric expansion
joints.
SERIES HT700
Invincible Series HT700 combines all the construction and
performance advantages of the 700 with high temperature
resistance. Reinforced with high temperature resistant fabric,
and with the cover of either EPDM or Viton
®
, the HT700 can
provide full pressure service at operating temperatures up to
350°F and 400°F respectively.
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.
*
Teflon
®
is a trademark of E.I. DuPont Nemours & Co.
**
FED - Fluorinated Ethylene Propylene Copolymer
MERCER INVINCIBLE
TEFLON
®
LINED
EXPANSION JOINTS
BULLETIN 700-MR6-1.1
MASON INDUSTRIES | MASON-IND.COM
9
•
103
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, Ductile or Stainless
Split Backup Rings
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
Beaded Wire
Hoop Ring
Molded
Teflon
®
Liner
Series 700 & HT700
Also Available in Multiple
Arch Construction
ANCHORED PIPING APPLICATIONS
Series 700 & HT700 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 page 9
•
104.
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 assem-
blies are installed, the stop nuts should be backed away from
the gusset plate a distance equal to the allowable extension of
the joint (See table, page 9
•
104). 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 Page 9•104)
Rubber Washer
& Steel Washer
Installed Exact
at Published
Face to Face
UNANCHORED PIPING APPLICATIONS
Series 700 & HT700 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 page 9
•
104.
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 exten-
sion 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
MASON/MERCER EXPANSION JOINTS
BULLETIN
700-MR6-1.1
9
•
104
Flange
Outside
Dia.
Face
to
Face
Overall Flange
Thickness (in)
Bolt
Circle
Dia.
No.
of
Holes
Bolt
Hole
Dia.
Allowable Movements
Rated
Working
Pressure
†
Minimum
Burst
Pressure
†
Pipe
Size
Axial
Compression
Axial
Extension
Lateral
Deflection
Degrees
Angular
Degrees
Torsional Vacuum
(in) (in) (in) Steel Ductile (in) (in) (in) (in) (in) (degrees) (degrees) (psig) (psig) (in Hg)
1 4
1
/4 6
7
/8 1 3
1
/8 4
1
/2
11
/16
3
/8
1
/2 20.0 3 165 660 30
1
1
/4 4
5
/8 6
7
/8 1 3
1
/2 4
1
/2
11
/16
3
/8
1
/2 19.0 3 165 660 30
1
1
/2 5 6
7
/8 1 3
7
/8 4
1
/2
11
/16
3
/8
1
/2 18.5 3 165 660 30
2 6 6
7
/8 1 4
3
/4 4
5
/8
11
/16
3
/8
1
/2 14.5 3 165 660 30
2
1
/2 7 6
7
/8 1 5
1
/2 4
5
/8
11
/16
3
/8
1
/2 11.5 3 165 660 30
3 7
1
/2 6
7
/8 1 6 4
5
/8
11
/16
3
/8
1
/2 10.0 3 165 660 30
4 9 6
7
/8 1 7
1
/2 8
5
/8
11
/16
3
/8
1
/2 7.5 3 165 660 30
5 10 6
7
/8 1 8
1
/2 8
3
/4
11
/16
3
/8
1
/2 6.0 3 150 600 30
6 11 6
7
/8 1 9
1
/2 8
3
/4
11
/16
3
/8
1
/2 5.5 3 150 600 30
8 13
1
/2 6
7
/8 1 11
3
/4 8
3
/4
11
/16
3
/8
1
/2 5.0 3 150 600 30
10 16 8
7
/8 1 14
1
/4 12
7
/8
11
/16
3
/8
1
/2 4.5 3 150 600 30
12 19 8
7
/8 1 17 12
7
/8
11
/16
3
/8
1
/2 3.8 3 150 600 30
14 21 8 1 1
1
/8 18
3
/4 12 1
11
/16
3
/8
1
/2 3.3 2 90 360 30
16 23
1
/2 8 1 1
1
/8 21
1
/4 16 1
11
/16
3
/8
1
/2 2.8 2 70 280 30
18 25 8 1 1
1
/8 22
3
/4 16 1
1
/8
13
/16
7
/16
1
/2 2.5 1 70 280 30
20 27
1
/2 8 1 1
1
/8 25 20 1
1
/8
13
/16
7
/16
1
/2 2.5 1 70 280 30
22 29
1
/2 10 1 1
1
/8 27
1
/4 20 1
1
/4
15
/16
1
/2
1
/2 2.3 1 70 280 30
24 32 10 1 1
1
/8 29
1
/2 20 1
1
/4
15
/16
1
/2
1
/2 2.0 1 70 280 30
26 34
1
/4 10 1 1
1
/8 31
3
/4 24 1
1
/4
15
/16
1
/2
1
/2 2.0 1 60 240 30
28 36
1
/2 10 1 1
1
/8 34 28 1
1
/4
15
/16
1
/2
1
/2 2.0 1 60 240 30
30 38
3
/4 10 1 1
1
/8 36 28 1
1
/4
15
/16
1
/2
1
/2 2.0 1 60 240 30
34 43
3
/4 10 1 1
1
/8 40
1
/2 32 1
1
/2
15
/16
1
/2
1
/2 1.8 1 60 240 30
36 46 10 1
1
/8 1
1
/4 42
3
/4 32 1
1
/2
15
/16
1
/2
1
/2 1.5 1 60 240 30
40 50
3
/4 10 1
1
/8 1
1
/4 47
1
/4 36 1
1
/2
15
/16
1
/2
1
/2 1.5 1 60 240 30
42 53 12 1
1
/8 1
1
/4 49
1
/2 36 1
1
/2 1
1
/16
9
/16
1
/2 1.5 1 60 240 30
44 55
1
/4 12 1
1
/8 1
1
/4 51
3
/4 40 1
1
/2 1
1
/16
9
/16
1
/2 1.5 1 60 240 30
48 59
1
/2 12 1
1
/8 1
1
/4 56 44 1
1
/2 1
1
/16
9
/16
1
/2 1.3 1 60 240 30
50 61
3
/4 12 1
1
/8 1
1
/4 58
1
/4 44 1
3
/4 1
1
/16
9
/16
1
/2 1.3 1 60 240 30
54 66
1
/4 12 1
1
/8 1
1
/4 62
3
/4 44 1
3
/4 1
1
/16
9
/16
1
/2 1.3 1 60 240 30
56 68
3
/4 12 1
1
/8 1
1
/4 65 48 1
3
/4 1
1
/16
9
/16
1
/2 1.3 1 60 240 30
60 73 12 1
1
/8 1
1
/4 69
1
/4 52 1
3
/4 1
1
/16
9
/16
1
/2 1.0 1 60 240 30
66 80 12 1
1
/8 1
1
/4 76 52 1
3
/4 1
1
/16
9
/16
1
/2 1.0 1 60 240 30
72 86
1
/2 12 1
1
/8 1
1
/4 82
1
/2 60 1
3
/4 1
1
/16
9
/16
1
/2 0.9 1 50 200 30
78 93 12 1
1
/8 1
1
/4 88
3
/4 60 2 1
1
/16
9
/16
1
/2 0.9 1 50 200 30
84 99
3
/4 12 1
1
/8 1
1
/4 95
1
/2 64 2 1
1
/16
9
/16
1
/2 0.8 1 50 200 30
90 106
1
/2 12 1
1
/8 1
1
/4 102
1
/4 68 2 1
1
/16
9
/16
1
/2 0.8 1 50 200 30
96 113
1
/4 12 1
1
/8 1
1
/4 108
1
/2 68 2
1
/4 1
1
/16
9
/16
1
/2 0.7 1 50 200 30
STYLE 700 & HT700 OPEN ARCH DIMENSIONS, ALLOWABLE MOVEMENTS
*
& PRESSURES
†
*
Reduce movements 50% when using filled arches.
†
Higher pressure joints are special design, advise factory of requirements.
Rubber Filler
Between Wire
1
/
4
"
Tube
Beaded Wire
Hoop Ring
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
1
/16"
Built-in Molded
Teflon® Liner
SERIES HT700
Series
HT700
High Temperature
Material
Max
Oper.
Cover Temp.
K-E EPDM 350°F
K-V Viton
®
400°F
Sizes 1 through 12 only.
SERIES 700
Series
700
Standard
Materials
Cover
Max
Oper.
Temp.
B Butyl 250°F
E EPDM 250°F
E EPDM 300°F
H Hypalon
®
225°F
N Neoprene 225°F
Ni Nitrile 225°F
R Natural 180°F
V Viton
®
250°F
MATERIAL AVAILABILITY & OPERATING TEMPERATURES
Size
Rated Standard Working Pressure (psi)
Vacuum
Rating
(in) 700 710 720 730 740 750 (in
Hg)
1-4 165 250 — — — — 30
5-12 140 210 250 — — — 30
14 90 130 160 190 225 250 30
16-26 70 100 125 145 175 195 30
28-44 60 85 105 125 — — 30
46-60 60 85 105 — — — 30
66-96 50 70 85 — — — 30
SERIES 700 HIGHER PRESSURE JOINTS
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
BULLETIN 700-MR6-1.1
MASON INDUSTRIES | MASON-IND.COM
9
•
105
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 page
9
•
104).
d. Mating flanges must be flat or raised face. Do not
mate with contoured flanges such as victaulic or
similar configurations.
e. C heck for chemical compatibility with the ordered material.
1. A ll pipelines must be properly supported, anchored and
guided so joints do not carry pipe or thrust loads.
2. I f piping is not anchored, control units must be used.
3. U se 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. A pply 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 " - 700 – Allowable Extension
3
/8"
1. 6" - 700 is installed at published 6" face to face
dimension.
Set control rod gap to
3
/8".
2. 6" - 700 is installed 5
3
/4" long.
Set control rod gap to
3
/8" plus
1
/4" =
5
/8"
3. 6" - 700 is installed 6
1
/4" long.
Set control rod gap to
3
/8" minus
1
/4" =
1
/8"
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.
Installation Instructions - 700 & HT700
CAUTION
1. Do not install any of the products in this bulletin at
pressures or temperatures higher than the published
ratings.
2. S eries 700 and HT700 must be installed against standard
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. P ipe 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. W ater type check valves must exactly center on the rubber
flanges. Valve O.D. and I.D. must conform to raised face
dimensions.
5. U se control rods as indicated on page 9
•
103.
6. C heck Chemical Resistance Guide CRG-MR1, page 9
•
59, for
service elastomer compatibility.
7. F ollow installation instructions.
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
