JCM 610 Sur-Grip Fitting Restrainer

JCM Joint Restraints

JCM Industries joint restraints hold pipe to fittings and across joints: the Sur-Grip 610 fitting restrainer, 620 bell joint restrainer and 621 joint restrainer for IPS PVC, C900 PVC, HDPE and ductile iron (350 PSI on ductile iron, 235 PSI on DR18 PVC for the 610 and 620), and the split 630 and 631 restrainers for asbestos cement pipe with tie rods included (150 PSI). Watermain Supply offers engineering-led selection and compares Smith-Blair and Dresser restraint products. Call 1-888.510.4036.

5 products
Sort by:
Best selling
Sort by:
Best selling
JCM 631 Coupling Restrainer for Asbestos Cement Pipe - 4 to 16 in
JCM 631 Coupling Restrainer for Asbestos Cement Pipe - product photo

JCM Industries

Free Shipping $499 or more

JCM 631 Coupling Restrainer for Asbestos Cement Pipe - 4 to 16 in

From $815.16
JCM 630 Fitting Restrainer for Asbestos Cement Pipe - 4 to 16 in
JCM 630 Fitting Restrainer for Asbestos Cement Pipe - product photo

JCM Industries

Free Shipping $499 or more

JCM 630 Fitting Restrainer for Asbestos Cement Pipe - 4 to 16 in

From $361.49
JCM 621 Sur-Grip Joint Restrainer - PVC, HDPE and Ductile Iron, 6 to 24 in
JCM 621 Sur-Grip Joint Restrainer - product photo

JCM Industries

Free Shipping $499 or more

JCM 621 Sur-Grip Joint Restrainer - PVC, HDPE and Ductile Iron, 6 to 24 in

From $359.61
JCM 620 Sur-Grip Bell Joint Restrainer - PVC and Ductile Iron, 6 to 12 in
JCM 620 Sur-Grip Bell Joint Restrainer - product photo

JCM Industries

Free Shipping $499 or more

JCM 620 Sur-Grip Bell Joint Restrainer - PVC and Ductile Iron, 6 to 12 in

From $230.05
JCM 610 Sur-Grip Fitting Restrainer - PVC, HDPE and Ductile Iron, 6 to 24 in
JCM 610 Sur-Grip Fitting Restrainer - product photo

JCM Industries

Free Shipping $499 or more

JCM 610 Sur-Grip Fitting Restrainer - PVC, HDPE and Ductile Iron, 6 to 24 in

From $166.18

JCM Joint Restraints

JCM Industries · Joint Restraints · 4 to 24 in

JCM Joint Restraints: Sur-Grip and A/C Pipe Restrainers

Hold pipe to fittings and across joints instead of relying on thrust blocks: Sur-Grip serrated-ring restrainers for PVC, HDPE and ductile iron, and split restrainers with tie rods for asbestos cement pipe.

JCM 610 Sur-Grip Fitting Restrainer
5 StylesSur-Grip and A/C
350 PSI610/620 on ductile iron
235 PSI610/620 on DR18 PVC
150 PSI630/631 on A/C
Rods included630 and 631

Couplings and mechanical joints seal pipe but do not hold it against thrust. JCM restrainers do that job: a serrated Sur-Grip ring grips PVC, HDPE or ductile iron and ties it to an MJ fitting or across a joint, and the split 630 and 631 restrainers anchor asbestos cement pipe during retrofit work, where excavation releases the backfill that held the joints.

Watermain Supply supplies JCM restrainers with engineering-led selection: send the pipe material and OD, the joint or fitting, and the pressure. 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?

Warranty

12 months from the date of purchase against defects in materials and workmanship (Watermain Supply standard).

Reliability

Serrated restraining rings with T-head bolts or compression followers; 630/631 bodies in ASTM A285 Gr C steel with shop coat, fusion epoxy or epoxy with stainless bolts.

Fit

JCM rates the 610 and 620 at 350 PSI on ductile iron (2:1 safety factor) and 235 PSI on DR18 PVC, and the 630 and 631 at 150 PSI. Sizes 14-24 in are for C900/C905 PVC and HDPE, not rigid pipe.

Size It Now

Send the pipe material, OD and the fitting or joint. We confirm the restrainer.

Email the details

Two Kinds of JCM Restrainer

JCM 610 Sur-Grip Fitting Restrainer

Sur-Grip Restrainers

Styles 610, 620, 621

350 PSIOn ductile iron
235 PSIOn DR18 PVC
6-24 inSizes
SerratedRestraining ring

A serrated ring grips the pipe. The 610 ties it to a mechanical joint or a fitting with anchor lugs; the 620 restrains across the bell, couplings and low-profile joints; the 621 grips both sides of a coupled or fused joint. From 14 in they become fabricated designs with restraining rods for C900/C905 PVC and HDPE.

  • IPS PVC and C900 PVC/ductile iron OD builds
  • 14-24 in for C900/C905 PVC and HDPE only
  • Alternative to thrust blocks
Best for PVC, HDPE and ductile iron mains at fittings and joints.
JCM 610JCM 620JCM 621
JCM 630 Fitting Restrainer for Asbestos Cement Pipe

A/C Pipe Restrainers

Styles 630, 631

150 PSIRating
4-16 inA/C pipe
A285 Gr CSteel body
IncludedTie rods, nuts, washers

Split restrainers with a wide, supportive stance for retrofit work on asbestos cement pipe. The 630 restrains A/C pipe to fittings, hydrants, FCAs, meters and MJs with 16 in rods; the 631 restrains across couplings with 36 in rods.

  • Split design installs on existing pipe
  • Shop coat, fusion epoxy or epoxy with SS bolts
  • Alternative to thrust blocks at hydrants and dead ends
Best for A/C pipe retrofits at fittings, hydrants and couplings.
JCM 630JCM 631

JCM Restrainers Side by Side

Style Type Pipe Sizes Rating
JCM 610 Sur-Grip fitting restrainer, pipe to MJ fitting IPS PVC, C900 PVC, HDPE, ductile iron 6 to 24 in 350 PSI on Ductile Iron (2:1 Safety Factor)
JCM 620 Sur-Grip bell joint restrainer IPS PVC, C900 PVC, ductile iron 6 to 12 in 350 PSI on Ductile Iron (2:1 Safety Factor)
JCM 621 Sur-Grip joint restrainer, both sides IPS PVC, C900 PVC, ductile iron; HDPE 14-24 in 6 to 24 in By application
JCM 630 A/C pipe fitting restrainer Asbestos cement 4 to 16 in 150 PSI
JCM 631 A/C pipe coupling restrainer Asbestos cement 4 to 16 in 150 PSI

The 621 is rated by application: JCM publishes its Sur-Grip ratings for the 610 and 620 only; send the pipe class and pressure and we obtain JCM's rating.

Closest Equivalents on Our Site

JCM's cross-reference chart does not list its restrainers, so these are the closest products we list by function.

JCM Smith-Blair Dresser Job
JCM 610 Smith-Blair 472 PipeLock (PVC), 471 (ductile) Dresser 440 Joint Harness (steel pipe) Pipe-to-fitting restraint
JCM 620 Smith-Blair 472, EZW Maxi-Grip coupling Dresser 440 Across bell and coupled joints
JCM 621 Smith-Blair 477 PipeLock sleeve, 472 Dresser 440 Both sides of a joint
JCM 630 Smith-Blair 907 restraint plate - A/C pipe at fittings
JCM 631 Smith-Blair 907 restraint plate - A/C pipe at couplings

Equivalents by function only: designs differ (restrained couplings, harnesses and plates against JCM's serrated rings). Confirm the right product for your pipe with us.

JCM vs Smith-Blair vs Dresser

Specs below are taken from our own listings.

JCM 610 / 620 Smith-Blair 472 Dresser 440
Design Serrated ring with T-head bolts or followers Restrained coupling with ductile iron Cam-Lock glands Joint harness with studs
Rating 350 PSI on DI; 235 PSI on DR18 PVC 235 PSI max working (PVC) Selector chart to 300 PSI
Pipe IPS PVC, C900 PVC, HDPE, ductile iron PVC Coupled steel pipe, 2-24 in IPS
Deflection Not stated on our listing 5° max Not stated on our listing

Verdict: the JCM Sur-Grip adds restraint to the fittings and joints you already have; the Smith-Blair 472 replaces the joint with a restrained coupling and publishes 5° of deflection. Dresser 440 is the choice for coupled steel pipe.

Selection Guide

Job JCM style Note
PVC or ductile iron to an MJ fitting JCM 610 C900/DI or IPS PVC OD builds
Across a PVC or ductile iron bell joint JCM 620 Over the bell and low-profile joints
Both sides of a coupling or fused joint JCM 621 14-24 in for C900/C905 PVC and HDPE
A/C pipe at a fitting, hydrant or meter JCM 630 16 in tie rods included
A/C pipe across a coupling JCM 631 36 in tie rods included

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 restrainers carry?

Watermain Supply covers them for 12 months from the date of purchase against defects in materials and workmanship.

What are the Sur-Grip pressure ratings?

JCM rates the 610 and 620 Sur-Grip restrainers for 350 PSI on ductile iron pipe with a 2:1 safety factor, and for 235 PSI on DR18 PVC, equal to the pipe rating on other PVC classes.

Can the 14-24 in Sur-Grip go on ductile iron?

No. JCM limits the 14-24 in Sur-Grip restrainers to C900/C905 PVC and HDPE; they are not for ductile iron, cast iron, A/C, steel or other rigid pipe.

What comes with the 630 and 631?

The split restrainer body plus tie rods, nuts and washers: 16 in rods on the 630, 36 in rods on the 631.

Do I still need a thrust block?

A properly installed restrainer is an alternative to thrust blocks at fittings, hydrants and dead ends; follow the project engineer on restraint length.

Which restrainer for HDPE?

The 610 covers HDPE to MJ fittings, and the 14-24 in 621 anchors over fused joints on HDPE.

Ready to Restrain the Joint?

Send the pipe material and OD, the fitting or joint and the pressure.

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 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.