JCM Engineered Products Manual 8 24 2020

JCM Fabricated Expansion Joints JCM Expansion Joints are available as Model 801 Single End design or Model 802 Double End Expansion Joint and are available with the following options:

(1) Weld-On Ends without Limit Rods (2) Weld-On Ends with Limit Rods (3) Flanged Ends without Limit Rods (4) Flanged Ends with Limit Rods

(5) Mechanical Joint Ends without Limit Rods (6) Mechanical Joint Ends with Limit Rods Other end connections available Increased or decreased amounts of pipe movement capability

JCM 801 Single End Expansion Joint

JCM 802 Double End Expansion Joint JCM Expansion Joint - Typical Specifications

Expansion Joints shall be of the externally guided, slip joint type, permitting up to 10” of concentrated pipe movement. The packing gland shall have alternate rings of lubricated flax and rubber specially compounded for use with water, salt solutions, mild acids, bases, natural gas and sewage. The body of the expansion joint shall have a shop coat primer. The slip pipe shall be stainless steel. Expansion Joints shall be JCM 801 or approved equal. Expansion Joint shall be ANSI/NSF Standard 61, Annex G and ANSI/AWWA 372 Certified. JCM Expansion Joint - Material Specifications BODY MATERIAL: Carbon Steel per ASTM A-36, ASTM A-516 Grade 70 or equal. Optional 304 or 316 Stainless Steel. SLIP PIPE: 18-8 Type 304 Stainless Steel. Optional 316 Stainless Steel. GASKET AND FLAX: Square packing Buna-N rubber, 55 - 60 durometer, compounded for use with water,

salt solutions, mild acids, bases and sewage. Flax: Gurlock waxed, braided cord (hemp).


Grade B-5


Heavy coat of corrosion resistant shop coat primer.


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