Audited Supplier
77A
12 Months
Welding
Universal
Flexible
Stainless Steel
Standard
Coupling
304/304L/316/316L/2205/2507
EPDM/FKM/Mvq/NBR
SS304/316
PASS
in Cartons
DN20 to DN300 1200Psi-1500Psi, cut groove only
China
Product Description
The Model 77A is mainly designed for high pressure grooved piping systems, such as high salinity wastewater treatment systems, RO seawater desalination systems, landfill leachate treatment systems, and cut grooved piping systems with rated working pressure of 1500 psi (100 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 & Rated working pressure
3/4″to 8″(DN20 to DN200) 1500psi(105bar)
10″to 12″(DN250 to DN300)1200psi(83bar)
Cut groove only
MODEL 77A MATERIAL SPECIFICATIONS
Housings:
Super duplex 2507(CE3MN)to ASTM A890 Grade5A
CE8MN to ASTM A890 Grade 2A
Duplex 2205(CD3MN)to ASTM A890 Grade4A
Austenic 254 SMO(CK3MCuN) to A743
Austenic 904L(CN2MCuN) to A351
Type 316 to ASTM A531 CF8M
Type 316L to ASTM A531 CF3M
Rubber Gaskets:
The gasket seals is C-shaped, made of standard gasket EPDM(ethylene propylene diene monomer) for cold water,hot water, dilute acid, oil-free air and multiple chemical product (-30~110ºC). 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
