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 (-30~110℃). 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

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 (-30~110℃). 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