77C STAINLESS STEEL COUPLING

The Model 77C is mainly designed for high pressure grooved piping systems, such as RO seawater desalination systems, and cut grooved piping systems with rated working pressure 1200 psi (83 bar). It is supplied in strong and anti-corrosive alloy materials of 304, 316, 316L, Duplex CD3MN (2205), Super Duplex CE8MN, CE3MN (2507). Its 316 bolts and nuts have excellent anti-corrosion performance and longer service life.

Sizes-Inches/DN
3/4″ to 12″ (DN20 to DN300)
 
Rated working pressure:
1200psi (83bar) , cut groove only

Housings:
Super duplex 2507(CE3MN)to ASTM A890 Grade5A
□ CE8MN to ASTM A890 Grade 2A
□ Duplex 2205(CD3MN)to ASTM A890 Grade4A
□ Austenic 254SMO(CK3MCuN) to A743
□ Austenic 904L(CN2MCuN) to A351
□ Type 316 to ASTM A351 CF8M
□ Type 316L to ASTM A351 CF3M

Rubber Gaskets:
The gasket seals is C-shaped, made of standard gasket EPDM(ethylene propylene diene monomer) for cold water, hot water, rare acid, oil-free air and multiple chemical product (-30~110℃). It is not suitable for medium like petroleum

Bolts:

□ Type 304 stainless steel track bolts to ASTM F593

□ Type 316 stainless steel track bolts to ASTM A193

Nuts:

□ Type 304 stainless steel nuts to ASTM F594
□ Type 316 stainless steel nuts to ASTM A194
□ Silicone bronze heavy duty nuts to ASTM B98 C65100 for option