JCM 101 Universal Clamp Coupling

JCM Pipe Repair Clamps

JCM Industries pipe repair clamps for water, wastewater and gas mains: universal clamp couplings with ductile iron or cast stainless lugs, removable lug clamps, fabricated lug all-stainless clamps, tapped service clamps, collar and bell joint leak clamps, patch clamps and the 159 cap sleeve. They cover 0.63 to 39.20 in pipe OD, and the universal and stainless styles are certified to NSF/ANSI 61 and 372 and meet AWWA C230. Pick the style by the job and the range by the measured pipe OD. Watermain Supply offers engineering-led selection and cross references to Smith-Blair and Dresser. Call 1-888.510.4036.

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JCM 159 Cap Sleeve for Abandoned Corporation Stops
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JCM Industries

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JCM 159 Cap Sleeve for Abandoned Corporation Stops

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JCM 174 Tapped Extended Range Clamp Coupling - Removable Lug
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JCM Industries

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JCM 174 Tapped Extended Range Clamp Coupling - Removable Lug

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JCM 173 Tapped Universal Clamp Coupling - Removable Lug
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JCM 173 Tapped Universal Clamp Coupling - Removable Lug

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JCM 172 Extended Range Universal Clamp Coupling - Removable Lug
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JCM 172 Extended Range Universal Clamp Coupling - Removable Lug

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JCM 171 Universal Clamp Coupling - Removable Lug, Single Band
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JCM 171 Universal Clamp Coupling - Removable Lug, Single Band

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JCM 168 Fabricated Lug Lightweight Stainless Steel Clamp - Slip Lining and Gravity Lines
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JCM 168 Fabricated Lug Lightweight Stainless Steel Clamp - Slip Lining and Gravity Lines

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JCM 164 Tapped Fabricated Lug All Stainless Steel Clamp - Extended Range
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JCM 164 Tapped Fabricated Lug All Stainless Steel Clamp - Extended Range

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JCM 163 Tapped Fabricated Lug All Stainless Steel Clamp
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JCM 163 Tapped Fabricated Lug All Stainless Steel Clamp

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JCM 162 Fabricated Lug All Stainless Steel Clamp - Extended Range, Double Band
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JCM 162 Fabricated Lug All Stainless Steel Clamp - Extended Range, Double Band

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JCM 161 Fabricated Lug All Stainless Steel Clamp - Single Band Repair Clamp
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JCM 161 Fabricated Lug All Stainless Steel Clamp - Single Band Repair Clamp

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JCM 153 All Stainless Gas Service Clamp - Tapped, USDOT 192
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JCM 153 All Stainless Gas Service Clamp - Tapped, USDOT 192

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JCM 151 All Stainless Gas Repair Clamp - USDOT 192, 2 to 12 in
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JCM 151 All Stainless Gas Repair Clamp - USDOT 192, 2 to 12 in

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JCM Pipe Repair Clamps

JCM Industries · Repair Clamps · 1/2 to 36 in

JCM Pipe Repair Clamps: Universal, Stainless, Tapped, Patch and Joint Leak Clamps

Stainless band repair clamps for breaks, splits, cracks, holes and leaking joints on water, wastewater and gas mains: universal clamp couplings with ductile iron or cast stainless lugs, fabricated lug all-stainless clamps, tapped service clamps, patch clamps, collar and bell joint leak clamps, 0.63 to 39.20 in pipe OD.

JCM 101 Universal Clamp Coupling
30 StylesRepair, tapped, joint, patch, gas
0.63-39.20 inPipe OD covered
NSF/ANSI 61 and 372Universal and stainless clamps
AWWA C230Universal and fabricated clamps
3/4-2 inNPT and CC service taps

JCM Industries repair clamps wrap a Type 304 stainless band and a full-circle gridded gasket around damaged pipe to stop the leak without cutting the pipe out. Utilities, contractors and plant crews use them on cast iron, ductile iron, steel, asbestos cement, PVC and HDPE, from 1/2 in service lines to 36 in mains, and JCM certifies its universal and stainless clamps to NSF/ANSI 61 and 372.

Watermain Supply supplies the JCM repair clamp line with engineering-led selection: send us the measured pipe OD, pipe material, damage and operating pressure, and we will name the style, range and width. Email sales@watermainsupply.com or call 1-888.510.4036. Genuine JCM Industries equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.

Will It Work for Me?

The four questions that decide a repair clamp.

Warranty

12 months from the date of purchase against defects in materials and workmanship (Watermain Supply standard; JCM publishes no separate term in the product data we hold). Keep the dated invoice.

Reliability

304 stainless bands, stainless bridge plates molded into a thick gridded gasket, drop-in bolts on the universal clamps, CF8 cast stainless lugs on the 131-134, and TIG-welded fabricated lugs on the 161-168 for hot and corrosive soils.

Fit

Sized to the actual pipe OD. JCM rates pressure by application (pipe, damage, line content, temperature) and recommends the 12 in width above 150 PSI. A clamp seals the pipe; anchor the pipe where it could move.

Size It Now

Send the measured OD, pipe material, damage length and pressure. We confirm the style, range and width.

Email the OD

Three Ways JCM Builds a Repair Clamp

Every style below is a variation on one of these.

JCM 101 Universal Clamp Coupling

Universal Clamp Couplings

Styles 101, 102, 131, 132, 171, 172

1.88-39.20 inPipe OD
6-30 inWidths
DI or CF8Lugs
NSF 61/372AWWA C230

The workhorse: a 304 stainless band, balanced low-profile lugs with sliding fingers, drop-in bolts and a 1/4 in gridded gasket. Single band covers about 0.40 in of OD; the extended range double and multi-band clamps cover all cast iron and A/C pressure pipe from 4 to 12 in in six clamps.

  • Ductile iron lugs (101, 102) or CF8 cast stainless lugs (131, 132)
  • Removable lug versions 171 and 172 for cramped trenches
  • 3/4 in bolts and 100+ ft-lb torque on 10 in and larger
Best for municipal main breaks, splits and corroded sections on cast iron, ductile iron, steel, A/C and PVC.
JCM 101JCM 102JCM 131
JCM 161 Fabricated Lug All Stainless Steel Clamp

Fabricated Lug All Stainless

Styles 161, 162, 168

2.35-23.60 inPipe OD
7.5-30 inWidths
All 304 SSBand, lugs, studs
TIG-weldedLug to band

Every part stainless: TIG-welded fabricated lugs, permanently attached studs, a thick lifter bar and a full-circle gridded gasket with a molded stainless bridge plate. JCM recommends them for hot soils and corrosive environments. The 168 is the lightweight version for slip lining and gravity lines.

  • No loose parts: studs fixed to the lugs
  • Nuts treated against seizing
  • Double band 162 for larger and out-of-round pipe
Best for aggressive soils, coastal sites and repairs that must outlast the pipe.
JCM 161JCM 162JCM 168
JCM 103 Tapped Universal Clamp Coupling

Tapped Service Clamps

Styles 103, 104, 133, 134, 163, 164, 173, 174

3/4-2 inNPT and CC outlets
2.35-39.20 inPipe OD
6-30 inWidths
304 SSOutlet

A universal or fabricated clamp with a threaded 304 stainless service outlet in the band: repair a direct-tap pull-out, or repair a split pipe and reconnect the service in the same fitting. Taps over 1 in need a 12 in or wider clamp.

  • IP (NPT) or CC corporation thread
  • Same lug choices as the plain clamps
  • Made to order; non-returnable per JCM
Best for pulled direct taps and service-area breaks.
JCM 103JCM 133JCM 163

Specialty Clamps

JCM 105 Collar Leak Clamp

PVC solvent weld and threaded joints, step gasket Joint leak

JCM 143 Bell Joint Leak Clamp

Cast iron, ductile iron and C900 PVC bells, 4-36 in Joint leak

JCM 110 Patch Clamp

150 PSI water, IPS and CTS sizes Patch

JCM 121 Gas Repair Clamp

Meets USDOT Code 192, 100 PSI gas to 8 in Gas

JCM 159 Cap Sleeve

Seals abandoned corporation stops, 250 PSI Abandoned services

Every JCM Clamp Side by Side

Pressure is JCM's published figure where one exists; universal and fabricated clamps are rated by application.

Style Type Pipe OD Pressure Gasket
JCM 101 Universal, ductile iron lugs 1.88-14.40 in By application SBR
JCM 102 Universal, extended range 4.44-39.20 in By application SBR
JCM 131 Universal, all stainless 1.88-14.40 in By application SBR
JCM 132 Universal, all stainless, extended 4.44-39.20 in By application SBR
JCM 171 Universal, removable lug 1.88-14.40 in By application SBR
JCM 172 Universal, removable lug, extended 4.44-39.20 in By application SBR
JCM 161 Fabricated lug, all stainless 2.35-14.40 in By application SBR
JCM 162 Fabricated lug, all stainless, extended 4.44-23.60 in By application SBR
JCM 168 Fabricated lug, lightweight, low pressure 4.00-13.50 in By application SBR
JCM 103 Tapped universal 2.35-14.40 in By application SBR
JCM 104 Tapped universal, extended 4.44-39.20 in By application SBR
JCM 133 Tapped all stainless 2.35-14.40 in By application SBR
JCM 134 Tapped all stainless, extended 4.44-39.20 in By application SBR
JCM 173 Tapped, removable lug 2.35-14.40 in By application SBR
JCM 174 Tapped, removable lug, extended 4.44-39.20 in By application SBR
JCM 163 Tapped fabricated lug 2.35-14.40 in By application SBR
JCM 164 Tapped fabricated lug, extended 4.44-23.60 in By application SBR
JCM 105 Collar leak, PVC joints 2.38-15.30 in By application SBR Step
JCM 135 Collar leak, all stainless 2.38-8.63 in By application SBR Step
JCM 106 Bell joint leak, IPS PVC 4 to 8 in By application SBR
JCM 143 Bell joint leak, CI, DI, C900 4 to 36 in By application NBR (Buna-N), Large Sizes
JCM 110 Patch clamp 0.63-12.75 in 150 PSI Water, 100 PSI Gas Buna-N Patch
JCM 111 Full repair clamp 0.84-2.38 in By application Buna-N Full-Circle, SS Armor
JCM 112 Heavy duty patch 1.90-13.05 in By application SBR Gridded
JCM 113 Heavy duty patch, multi-band 10.00-36.75 in By application SBR Gridded
JCM 121 Gas repair clamp 1.88-13.50 in 100 PSI Gas to 8 in, 60 PSI 10-12 in Buna-N (NBR)
JCM 123 Gas service clamp, tapped 1.88-13.50 in 100 PSI Gas to 8 in, 60 PSI 10-12 in Buna-N (NBR)
JCM 151 Gas repair, all stainless 2.35-13.50 in 100 PSI Gas to 8 in, 60 PSI 10-12 in Full-Circle Gridded
JCM 153 Gas service, all stainless, tapped 2.35-13.50 in 100 PSI Gas to 8 in, 60 PSI 10-12 in Full-Circle Gridded
JCM 159 Cap sleeve, abandoned services 4.74-14.56 in 250 PSI -

Rated by application: JCM sets the rating per installation and recommends the 12 in width above 150 PSI. Send the pipe OD, type, damage and pressure and we obtain JCM's rating.

Repair Clamp Cross Reference

JCM styles and their nearest equivalents from Smith-Blair, Dresser, Ford, Romac and PowerSeal.

JCM Description Smith-Blair Dresser Ford Romac PowerSeal
101 Universal clamp coupling, standard range 226 Alloy / 226 SS Style 360 F1 CL1 3121
102 Universal clamp coupling, extended range 227 Alloy / 227 SS, 228 Alloy / 228 SS 361 F2, F3 CL2, CL3 3122
131 All stainless universal clamp, standard range 256 364 FLS1 SS1* -
132 All stainless universal clamp, extended range 257 Style 360 FLS2 SS2*, SS3* -
161 All stainless fabricated clamp 261 8364 FS1 SS1 3121AS
162 All stainless fabricated clamp, extended range 262 - FS2 SS2 3122AS
168 Stainless fabricated lightweight clamp - - - LSS1, LSS2 3121ASLW
103 Tapped universal clamp, standard range 238 Alloy / 238 SS Style 360 F1 CL1 3131
104 Tapped universal clamp, extended range 239 Alloy / 239 SS 361 F2, F3 CL2, CL3 3132
133 Tapped all stainless clamp, standard range 264 - FLS1 SS1* -
134 Tapped all stainless clamp, extended range 265 - FLS2 SS2*, SS3* -
163 Tapped all stainless fabricated clamp 264 - FS1 - -
164 Tapped all stainless fabricated clamp, extended range 265 - FS2 - -
105 PVC collar leak clamp 229 - FCC CLC 3141
135 All stainless PVC collar leak clamp 269 - FCC CLC 3143AS
106 Bell joint leak clamp, IPS PVC - - FBC 517 -
143 Bell joint clamp, DI, CI, C900 PVC 274 Short / 274 Long Style 60, Style 160 FBC 416, 516 3231, 3232
110 Patch clamp 245 Galv / 245 SS, 248 Style 118 FSLC SC 3151A, 3151AS
111 Full repair clamp 244 Galv / 244 SS - FLSC-R SCC 3152
112 Heavy duty patch clamp - - - - 3151HD
113 Heavy duty patch clamp, multi-band 246 Alloy / 246 SS 77, 79 - - -

From the JCM Industries Product Cross Reference and Comparison Chart (Product Directory 8-25). Linked styles are on our site. Equivalents are matched by function: OD ranges, pressure ratings, gaskets and materials differ, so confirm the part for your pipe before ordering. * = similar materials, designs vary (JCM note).

JCM vs Smith-Blair vs Dresser

All three lines are on our site. Specs below are taken from our own listings.

Universal Clamps: JCM 101 vs Smith-Blair 226 vs Dresser 360

JCM 101 Smith-Blair 226 Dresser 360
Construction 304 stainless band, ductile iron lugs, low-alloy steel drop-in bolts 304 stainless band, epoxy-coated ductile iron lugs, low-alloy or 304 SS bolts 304 stainless band and spanner, ductile iron lugs, Dresserloy bolts
Pressure Rated by application; 12 in width above 150 PSI 300 PSI max working 250 PSI max working (water), falling with size
Gasket and temperature SBR, -40°F to +150°F Nitrile (Buna-N), -20°F to +180°F Gridded, tapered gasket
Pipe OD 1.88-14.40 in (102 to 39.20 in) 2.35-14.40 in (228 to 30.72 in) 2.35-30.72 in in one listing
Certification NSF/ANSI 61 and 372; AWWA C230 NSF/ANSI 61 and 372 Not stated on our listing
Removable-lug version Yes: JCM 171 Removable lugs standard Not stated on our listing

Verdict: Smith-Blair 226 publishes the highest single rating (300 PSI) and a higher maximum temperature (180°F). JCM 101 starts smaller (1.88 in OD), carries both NSF/ANSI 61 and 372 and AWWA C230, and has a removable-lug twin (171) for tight trenches. Dresser 360 wins on reach: one listing from 2 to 30 in.

All Stainless: JCM 161 vs Smith-Blair 261 vs Dresser Quick-Cam

JCM 161 Smith-Blair 261 Dresser Quick-Cam All Stainless
Construction All 304 stainless, TIG-welded fabricated lugs, studs fixed to lugs All 304 stainless, fabricated stainless lugs All stainless
Pressure Rated by application 150 PSI max working 150 PSI max working (regular range)
Gasket and temperature SBR, -40°F to +150°F Nitrile, -20°F to +180°F SBR, NSF/ANSI 61; 180°F max continuous
Pipe OD 2.35-14.40 in (162 to 23.60 in) 2.35-13.80 in Regular range by size
Certification NSF/ANSI 61 and 372; AWWA C230 NSF/ANSI 61 and 372 NSF/ANSI 61 gasket

Verdict: Smith-Blair 261 publishes a fixed 150 PSI rating and a Nitrile gasket good to 180°F, the better choice on warmer lines or where oil is present. JCM 161 runs to 23.60 in OD in the double band 162 and adds AWWA C230. Dresser Quick-Cam is the choice where a cam-style closure is wanted.

Tapped Clamps: JCM 103 / 133 vs Smith-Blair 238 / 264 vs Dresser Quick-Cam with Outlet

JCM 103 / 133 Smith-Blair 238 / 264 Dresser Quick-Cam with Outlet
Outlet 3/4-2 in NPT and CC, 304 stainless 3/4-2 in NPT and CC, 304 stainless NPT or CC outlet
Pressure Rated by application 238: 300 PSI; 264: 150 PSI 150 PSI (regular range); 200 PSI water (extended range)
Lugs 103 ductile iron; 133 CF8 cast stainless 238 epoxy-coated ductile iron; 264 fabricated stainless Ductile iron or all stainless
Pipe OD 2.35-14.40 in (104/134 to 39.20 in) 238: 3.46-13.50 in; 264: 3.46-9.39 in By size
Small sizes From 2.35 in OD, 6 in width with 3/4 and 1 in taps From 3.46 in OD Not stated on our listing

Verdict: for a high-pressure service repair, the Smith-Blair 238 at 300 PSI is the published leader. JCM taps smaller pipe (from 2.35 in OD) and offers four lug builds, including removable lug (173, 174) and fabricated stainless (163, 164). Pick by the pipe and the pressure, and we will confirm the rating.

Selection Guide

Start from the job, then confirm the OD range.

Job JCM style Note
Main break, split or corrosion, cast iron or ductile iron JCM 101 or JCM 102 Extended range for out-of-round or uncertain OD
Hot, corrosive or acidic soil JCM 131, JCM 161 or JCM 162 All stainless; 161/162 have TIG-welded fabricated lugs
Tight trench, rock or a gallery JCM 171 or JCM 172 Removable lug slides off the band to wrap the pipe
Pulled direct tap or service-area break JCM 103, JCM 133 or JCM 163 Taps over 1 in need a 12 in or wider clamp
Leaking PVC solvent weld or threaded coupling JCM 105 or JCM 135 Step gasket seals over the coupling shoulder
Leaking bell joint JCM 106 (IPS PVC) or JCM 143 (CI, DI, C900) The 143 installs under pressure
Pin hole on a service line or plant pipe JCM 110 or JCM 111 IPS and copper tube sizes
Natural gas main JCM 121 or JCM 151 Meets USDOT Code 192; 100 PSI gas to 8 in
Slip lining or gravity sewer JCM 168 Low pressure service only
Abandoned corporation stop JCM 159 250 PSI with a 3/4 in test port

Sizing and Best Practices

Three steps get the right clamp the first time.

Measure the OD, not the nominal size

Wrap a pipe OD tape (or a string) around the pipe at the repair. Circumference divided by 3.1416 is the OD. Our JCM 920 pipe diameter tape reads the diameter directly in 100ths of an inch.

Pick the range around your number

Choose the OD range that contains the measured OD, ideally near the middle of the range. Out-of-round or corroded pipe is a reason to step to an extended range style.

Know the pipe material

Cast iron, ductile iron and C900 PVC share one OD family; IPS PVC, steel and HDPE share another; asbestos cement runs larger. Two pipes of the same nominal size can need different fittings.

Choose the width

The clamp should extend well past the damage on both sides. JCM recommends the 12 in width for repairs above 150 PSI working pressure and on larger sizes, and taps over 1 in need a 12 in or wider clamp.

Anchor the pipe

A repair clamp seals the full circumference but does not restrain the pipe. JCM calls for proper anchorage wherever the pipe could move out of the clamp.

Gas lines

Use the gas-rated 121, 123, 151 or 153 (USDOT Code 192; Buna-N gasket standard on the 121 and 123). The universal and fabricated water clamps carry SBR gaskets.

Quick rule: measure the OD, pick the range around it, choose 12 in width above 150 PSI, and send us the numbers if anything is borderline.

What Makes a JCM Clamp Seal

Gridded gasket

A 1/4 in diamond-gridded SBR gasket with long tapered ends fills pits and uneven pipe surfaces and seals evenly across the range.

Molded bridge plate

A stainless bridge plate molded into the gasket spans the lug gap, so the gasket never extrudes between the lugs.

Sliding finger lugs

Balanced, low-profile lugs with mutually supporting fingers tighten without distortion over the whole range.

Drop-in bolts

Bolt, nut and washer stay on the clamp on the universal styles: no loose parts in the trench.

Stainless options

CF8 cast stainless lugs (131-134) or TIG-welded fabricated stainless lugs (161-168) for corrosive service.

Standards

Universal and fabricated clamps meet applicable portions of ANSI/AWWA C230 and are certified to NSF/ANSI 61 Annex G and NSF/ANSI 372.

Accessories

The tool that gets the range right.

JCM 920 Pipe Diameter Tape

Reads pipe OD in 100ths of an inch Sizing tool

Why Buy JCM From Watermain Supply

Engineering-led selection

Send the measured OD, pipe material, damage and pressure. We name the style, range and width, and we obtain JCM's rating and a submittal when the job needs one.

Three brands, one honest answer

We sell JCM, Smith-Blair and Dresser side by side. If another style fits your pipe better, we will say so and quote it.

Every part on one order

Clamps, couplings, saddles, tapping sleeves, restraints and gaskets on one PO, with account terms for utilities and contractors.

Parts and aftermarket

JCM transition gaskets, OD tapes and replacement parts listed alongside the fittings, so the job does not stall on a gasket.

Odd sizes handled

JCM builds special ranges, widths, outlets and materials to order. We handle the request and the submittal for you.

Houston based, Gulf Coast service

Watermain Supply is based in Houston and serves utilities, contractors and plants across the Gulf Coast and nationwide.

Frequently Asked Questions

What warranty do JCM repair clamps carry?

Watermain Supply covers JCM clamps for 12 months from the date of purchase against defects in materials and workmanship. Keep the dated invoice as proof of purchase.

How do I pick the right clamp size?

Repair clamps are sized by actual pipe OD, not nominal size. Measure the circumference, divide by 3.1416 and pick the OD range that contains your number, ideally near the middle. The JCM 920 tape reads the OD directly.

Single band or extended range?

A single band clamp covers about 0.40 in of OD range. The extended range double and multi-band clamps (102, 132, 162, 172) cover wider ranges and suit out-of-round, corroded or uncertain ODs.

What pressure do JCM clamps hold?

JCM rates its universal and fabricated clamps by application, because the rating depends on pipe size and type, the damage, line content and installation. It recommends the 12 in width above 150 PSI. The 110 patch clamp is rated 150 PSI water, the gas clamps 100 PSI gas to 8 in and the 159 cap sleeve 250 PSI.

Are JCM clamps approved for drinking water?

The universal clamp couplings and the fabricated lug stainless clamps are certified to NSF/ANSI 61 Annex G and NSF/ANSI 372.

Do repair clamps restrain the pipe?

No. A repair clamp seals the pipe; it does not hold the pipe ends together. JCM calls for proper anchorage wherever the pipe could move.

Which clamp for a gas main?

The JCM 121 and 151 gas repair clamps and the tapped 123 and 153 gas service clamps meet USDOT Code 192 and are rated 100 PSI gas on 2-8 in and 60 PSI on 10-12 in. The 121 and 123 carry Buna-N gaskets; the stainless 151 and 153 offer gasket choices.

What does the removable lug do?

On the 171 to 174 the lug section slides off the band, so the clamp wraps the pipe where there is no room to slide a clamp on, then the lug slides back and bolt torque locks it.

Can tapped clamps be returned?

JCM lists tapped clamps as non-returnable. Confirm the OD, outlet size and thread (IP or CC) before ordering.

What if I cannot find my size?

JCM builds other ranges, widths, outlets and gaskets to order. Email sales@watermainsupply.com with the pipe OD, material and pressure.

Ready to Order the Right Clamp?

Send the measured pipe OD, material, damage and pressure. We will name the JCM clamp and width.

1-888.510.4036Email SalesRequest a Quote
Technical data on this page is taken from JCM Industries product literature and is subject to change by the manufacturer. Confirm against the current installation instructions before specifying.
JCM Industries and Universal Clamp Coupling, Sur-Grip are trademarks of JCM Industries, Inc.; Smith-Blair, Dresser, Ford, Romac, PowerSeal, Cascade, Robar and Mueller are trademarks of their respective owners, used here for product identification only. Cross-reference equivalents are by function; ranges, ratings and materials differ.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.