JCM Industries 131, 133, 132, 134 Installation Manual

Installation Instructions

Models 131, 133, 132 and 134

All Stainless Steel

Universal Clamp Couplings

Read instructions before starting installation*
Review of “Tricks of the Trade” on the reverse will assist with installation.
For purposes other than water, contact JCM Industries for application and product assistance.

1. Clean and scrape pipe. Remove any scale, pipe wrap, debris or dirt that may interfere with the
complete sealing of the gasket. Inspect pipe for integrity, size, outside diameter and surface
irregularities. Confirm the proper size and range of repair clamp. Inspect fitting to ensure all
parts are included.

Fittings furnished with stainless steel hardware; see reverse for fastener management.

2. Lubricate the pipe and the fitting gasket with soapy water. Do not use oil base pipe
lubricant. Loosen nuts of bolts and back nuts to the end of the bolt (complete removal of bolts

is not necessary). Release oval necked bolts from lug ears and open the clamp.

3. For Models 131, 133 - Place clamp on pipe and center over damaged area. Tuck tapered
gasket in place; mesh finger lugs and rotate clamp in direction of arrow to smooth tapered
gasket flap. Position bolting lug for easy access to continued bolt tightening. Engage bolts in
receiver lugs and finger tighten to hold in place.
Begin bolt tightening sequence. See step 4.

For 132, 134 Multi Band Clamps - with multi lug segments. One section
has “closed ears” (A) and “open ears” (B) for bolt engagement. Locate lug
segment with open “ear” to loosen bolts. Loosen bolts of other lug segments.
Do not remove bolts.

Open clamp at open ear lug segment and place clamp on pipe so that gasket flap is on top is
facing you. Bring back half of clamp around pipe. Feed tapered gasket end into place, mesh
top lug fingers into “open ears” and engage bolts. Rotate clamp in direction of arrow to smooth
tapered gasket flaps. Finger tighten bolts to hold in place. Begin tightening bolts to proper
torque values. Continue around pipe at each lug segment. Avoid tightening lugs to metal
bound at any one segment - gaps between lugs should be approximately even on both sides.

Continue bolting sequence to proper torque values below.

4. Tighten all bolts evenly to the following torque values, ensure torque values with calibrated
field torque wrench:

5/8” Bolts to 70 Foot Pounds
3/4” Bolts to 90 Foot Pounds

5. Complete installation of fitting, return after approximately 15 minutes and confirm minimum
bolt torque levels have been maintained.

For JCM 133 and 134 Tapped Clamps, proceed with tapping process.

INT131-0115

*Ensure fitting is suitable for application (confirm size, materials, pressure ratings, line content, meets local governing & association
standards, etc.). Pipeline operation forces, including pressure fluctuations, thermal expansion/contraction, movement/shifting, etc. will
influence the success of the application. Proper anchorage, restraint, harnessing, thrust blocks or other devices must be provided to prevent pipe movement
(lateral, angular, axial) or pipe pullout from the bolt-on fitting. Inspection of the pipe integrity is the responsibility of the end user. JCM recommends the use
of calibrated torque wrench. Failure to follow installation instructions will result in voided product warranty.

For application review or questions contact JCM Industries at 1-800-527-8482, 903-832-2581

Tricks of the Trade for Installation

Models 131, 133, 132 and 134

All Stainless Steel

Universal Clamp Couplings

This JCM Quality Fitting is equipped with 18-8 stainless steel bolts and nuts for superior corrosion resistance. When not properly handled
it is the nature of stainless steel fasteners to gall and freeze (seize up). This is due to the inherent properties of the stainless material.
Galling and freezing is often triggered by the presence of metal chips, burrs and grains of sand on the threads of the bolts and nuts. Extra
care has been taken by JCM prior to assembly and packing of this fitting to assure a trouble-free installation.

1. The nuts and bolts are made from material of different hardness so that they have different strengths.

2. Standard 5/8” and 3/4” nuts are coated with a special blue or green (antiseize) coating. Additional lubricant may be needed.
Uncoated stainless steel hardware is provided without lubrication to prevent a build up of dirt, sand or grit during shipment. A

Molybdenum-Base lubricant is recommended.

3. Each nut is assembled by hand to be sure that it went on the bolt freely.

4. The bolts and nuts are handled carefully to avoid damage to the threads.

5. The bolts and nuts are made to exacting specifications to assure that the correct material is used and that the thread form is correct.

Stainless hardware is especially susceptible to galling. JCM supplies specially coated nuts to eliminate the galling caused by
overtorquing, but the bolt threads must be kept clean, free from nicks and not pitched or thrown into the tool bucket during the
installation process. Use of the JCM 901 Master Wrench or JCM 905 Torque Wrench with Deep Socket is highly recommended.
Use of pneumatic wrench for installation could cause hardware to seize and is not recommended.

Tricks of the Trade

Years of field experience, special applications and product testing have revealed many subtleties regarding application and
installation of repair clamps. For maximum performance under adverse conditions take advantage of the JCM “Tricks of the
Trade.”

• Always clean and lubricate pipe with water or soapy water. This helps overcome friction when rotating the clamp to smooth the gasket.

Do not use oil base pipe lubricant; the oil does not disperse, leaves residue and prevents the gasket from sealing/adhering to the pipe
wall. Use water solvent lubricant. Use of a mirror will assist inspection of backside of pipe or pipe in
cramped, limited space.

• Place a reference mark on the pipe back from the damaged area to help in centering clamp over break.

Clamps provide maximum performance when centered over damage area.

• For installation on pipe under pressure: lubricate the clamp gasket with soap/water mixture, assemble clamp

on the pipe beside the damaged area, lightly engage bolts and slid the clamp over the damaged area,
ensure tapered gasket lays flat without curl or fold, proceed with installation steps.

• Breaks involving deflected pipe require a wider clamp. JCM lugs will articulate, permitting clamp to better conform to pipe.

• Damage involving large holes or massive pitted areas - use stainless steel plate over large holes (under repair clamp) to provide the

gasket a surface to seal against.

• Drill holes in the ends of splits or cracks to relieve forces which could cause splits to continue.

• Clamp performance drops when gap between pipe ends is larger than 1/2”. Use a stainless steel spacer to fill or to place over gap.

• Leave sufficient pressure on a broken line to prevent intrusion of foreign matter to prevent excessive line contamination.

• With pressure reduced, spraying water will cease as soon as water level rises above break.

• Lubricating clamp bolts will ease clamp installation and assure proper torquing of bolts.