Dearman Light Chain Clamp

Dearman Light Chain ClampOur versatile and easy-to-handle Dearman Light clamps are ideal for lighter-wall pipe alignment and reforming, yet sturdy enough to align up to Schedule 40 pipe. Lighter weight than the original Mathey Dearman Chain Clamps, Dearman Light Chain Clamps are quick and easy to set up while still providing the ability to get excellent fit-ups on pipe from 1" to 36" (25 mm to 914 mm) in diameter. Dearman Light Chain Clamps are available in carbon steel chain or stainless steel chain versions. Although all Mathey Dearman Chain Clamps feature stainless steel Jackscrews, Jackbars and Main Blocks, stainless steel chain should be used on stainless steel or specialty alloy applications to avoid potential contamination. Larger Dearman Light clamp models come standard with our Level and Support Device to hold and accurately position pipe and fittings.

FEATURES:

  • ACCURATE | Aligns within 1/64 of an inch (.4 mm)
  • LIGHTWEIGHT | The 1” to 12” (25 mm to 305 mm) Dearman Light
    Chain Clamp weighs 50% less than an 8” (203 mm) hand-lever cage clamp
  • WIDE RANGE | Covers the same pipe range as 11 cage clamps
  • VERSATILE | Aligns pipe with wall thickness to Schedule 40, reforms pipe to Schedule 20
  • SAFER | Elbows, tees, flanges and other fittings are well-secured during alignment with the Level and Support Device

BENEFITS:

  • One Chain Clamp covers the range of 8 cage clamps
  • Pipe and fittings can be fully welded with clamp in place
  • Jackscrew contact points swivel to protect against marring the pipe
  • Optional Spacing Screws available to assist in setting weld gap
  • An add-on Jackbar can be added when additional reforming pressure is need.

Dearman Light Chain Clamps Include:

  • Nickel plated carbon steel or stainless steel duplex roller chain
  • Stainless steel Single or Double Jackscrew Jackbars - quantity as indicated in specifications
  • Stainless steel Main Block
  • Level and Support Device*
  • Jackscrew Wrench
  • Parts and Operating Manual
  • Heavy-duty Storage Box*

*NOTE: D231-LT AND D231-LTSS CLAMPS DO NOT INCLUDE LEVEL AND SUPPORT DEVICE OR HEAVY-DUTY STORAGE BOX

Specifications

DEARMAN LIGHT SINGLE JACKSCREW CHAIN CLAMP
Model Number of Jackbars Nominal Pipe Size Range in (mm) Reforms Pipe to Schedule* Aligns Pipe to Schedule Est. Shipping Weight
D231-LT**
5
1-12 (25-305) 20 40 13 lbs / 6 kg
D231-LTSS**
5
1-12 (25-305) 20 40 13 lbs / 6 kg
D232-LT 7 4-20 (102-506) 20 40 31 lbs / 14 kg
D232-LTSS 7 4-20 (102-506) 20 40 31 lbs / 14 kg
D233-LT 10 6-36 (152-914) 20 40 84 lbs / 38 kg
D233-LTSS 10 6-36 (152-914) 20 40 84 lbs / 38 kg

*Calculations are based on pipe with a tensile strength of 45,000 lbs per square inch / 3,164 kg per square centimeter

** DOES NOT INCLUDE LEVEL AND SUPPORT DEVICE OR STORAGE BOX.

SS - Indicates clamp includes stainless steel chain. All clamps equipped with stainless steel Jackbars, Jackscrews, and Main Blocks.

NOTE: MATHEY DEARMAN CHAIN CLAMPS CAN BE RECONFIGURED FOR STAINLESS STEEL AND OTHER SPECIALTY ALLOY APPLICATIONS. REPLACE THE CARBON STEEL ROLLER CHAIN WITH STAINLESS STEEL CHAIN. (ALL OTHER COMPONENTS OF CHAIN CLAMPS ARE MADE OF STAINLESS STEEL)

THE DEARMAN LIGHT CHAIN CLAMP SHOULD NEVER BE USED AS THE SOLE SUPPORT FOR THE PIPE OR TO LIFT THE PIPE. DO NOT EXCEED PIPE SIZE RANGE LISTED OR USE ANY TYPE OF CHAIN OTHER THAN SUPPLIED WITHOUT FIRST CONTACTING THE MATHEY DEARMAN SALES DEPARTMENT. USE OF CHAIN NOT SUPPLIED WITH THE CLAMP BY MATHEY DEARMAN WILL VOID THE CLAMP WARRANTY.

DEARMAN LIGHT DOUBLE JACKSCREW CHAIN CLAMP
Model Number of Jackbars Nominal Pipe Size Range in (mm) Reforms Pipe to Schedule* Aligns Pipe to Schedule Est. Shipping Weight
D249-LT 7 4-20 (102-506) 20 40 36 lbs / 17 kg
D249-LTSS 7 4-20 (102-506) 20 40 36 lbs / 17 kg
D235-LT 10 6-36 (152-914) 20 40 90 lbs / 41 kg
D235-LTSS 10 6-36 (152-914) 20 40 90 lbs / 41 kg

*Calculations are based on pipe with a tensile strength of 45,000 lbs per square inch / 3,164 kg per square centimeter

SS - Indicates clamp includes stainless steel chain. All clamps equipped with stainless steel Jackbars, Jackscrews, and Main Blocks.

NOTE: MATHEY DEARMAN CHAIN CLAMPS CAN BE RECONFIGURED FOR STAINLESS STEEL AND OTHER SPECIALTY ALLOY APPLICATIONS. REPLACE THE CARBON STEEL ROLLER CHAIN WITH STAINLESS STEEL CHAIN. (ALL OTHER COMPONENTS OF CHAIN CLAMPS ARE MADE OF STAINLESS STEEL)

THE DEARMAN LIGHT CHAIN CLAMP SHOULD NEVER BE USED AS THE SOLE SUPPORT FOR THE PIPE OR TO LIFT THE PIPE. DO NOT EXCEED PIPE SIZE RANGE LISTED OR USE ANY TYPE OF CHAIN OTHER THAN SUPPLIED WITHOUT FIRST CONTACTING THE MATHEY DEARMAN SALES DEPARTMENT. USE OF CHAIN NOT SUPPLIED WITH THE CLAMP BY MATHEY DEARMAN WILL VOID THE CLAMP WARRANTY.

NOTE: COMPLETE WELDING OF THE JOINT CAN BE ACCOMPLISHED WITHOUT REMOVING THE CLAMP. AN ADDITIONAL JACKBAR CAN BE INSTALLED IF PRESSURE NEEDS TO BE APPLIED BETWEEN THE CLAMP JACKBARS. OPTIONAL SPACING SCREWS CAN BE ADDED FOR PRECISE WELD GAP ADJUSTMENT.