Specifications

UL/FM ductile iron heavy duty flexible coupling
1.UL/FM approved
2.for fire system
3.ductile iron grooved heavy
4.flexible

UL/FM ductile iron heavy duty flexible coupling

• Grooved fitting
• FM&UL approved
• Material: ductile cast-iron ASTM-A536
• Surface can be coated with epoxy powder, hot dip zinc or ordinary paint
• Flexible and rigid
• Joint reliability
• Isolates noise and vibration
• Convenient joint
• Applications:
• Fire protection
• Power plant: heating, ventilation and air conditioning
• Industrial plant: water treatment, plumbing and mining

The grooved products line incorporate a variety of grooved couplings & fittings ... thanks to outstanding quality, they can be used for all your HVAC and fire protection applications.

•      quick assembly

•      simple, easy, fast installation

•      saves both time & money

•      high flexibility (flexible couplings)

•      vibration & noise reduction

•      no leakage

Standard finish : color red - RAL3000 (powdercoated)

Optional finish :

- Hot Dip Galvanized

- Other RAL colors

- Unpainted (black steel)

In-house design and engineering! Moldings, Castings, Gaskets, Machining, Powdercoating, etc.

Items exceeding UL Standards :

- 300 / 400 / 500 psi

- suitable for EN10255 & Sch40 pipes

 

ASTM A-536 - Standard specification for ductile iron castings grade 64-45-12

Tensile Strength:Min. psi - 6,5000 (Mpa-448)

Yield Strength:Min. psi - 45,000 ( 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

Available Size: DN25mm to DN400mm(1" to 16")

Standard Coating: Epoxy Powder (painted,dacromat,galvanized can be chose)

 

Advantage of Grooved Fittings

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.