Specifications

quality ductile iron China rigid grooved couplings
UL/FM approved,high quality
for fire system
ductile iron grooved type

ductile iron China rigid grooved couplings

 

Grooved Fittings

Advantage
Built in deflection tolerance allow for quick installation and easy pipe alignment in
uneven areas,or where ground settling may occur.
Grooved couplings allow for some linear expansion and contraction as well as
horizontal variance. These features eliminate limited pipeline stresses without
the use of costly expansive joints.

Features & Benefits
Grooved end fittings for grooved pipe combine the features of a straight line or
flexible coupling, a union and an extension at each pipe joint.The housing engage
the groove around the entire pipe circumference,looking the pipe together.
Grooved end fittings allow easy removal of pipe sections for replacement,cleaning
and service.
The grooveds are not as deeply cut as threaded pipe,less metal is removed and more
of the pressure rating of pipe is retained
Installation time and cost is low,since only a socket wrench is required.

Material Specifications

Ductile Iron Housing Specifications
ASTM A-536-Standard specification for ductile iron castings grade 64-45-12
Tensile Strength:Min. psi - 65000 (Mpa-448)
Yield Strength:Min. psi - 45000 ( Mpa-310)
Elongation in 2" (50mm): Min. 12%
ASTM A-153-Standard specification for hot dipped galvanizing
Bolt/nut: Carbon steel bolts and nuts are heat treated and conform to the physical
properties of ASTM A-183
Gasket: EPDM,Silicon Rubber, Nitrile
Standard Coating: Epoxy Powder (painted,dacromat,galvanized can be chose)

Approved
FM & UL

Note
For more details,please welcome you contact us to request it.