77A STAINLESS STEEL COUPLING

 

77A STAINLESS STEEL HEAVY

DUTY FLEXIBLE COUPLING

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The Model 77A is designed for high pressure applications including RO and desalination systems.

The 77A is available in strong and anti-corrosive alloys of 304,316,316L Stainless steel, Duplex

CD3MN(2205), Super Duplex CE8MN, CE3MN(2507). The 77A features 304 or 316 bolts and silicone

bronze heavy nuts to help prevent galling during repetitive use.

 

Sizes-Inches & Rated working pressure

3/4to 8(DN20 to DN200) 1500psi(105bar)

10to 12(DN250 to DN3001200psi(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 A743 CF8M

Type 316L to ASTM A743 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 (-50~150). It is not suitable

for medium like petroleum

 

Bolts:

Type 316 stainless steel track bolts ASTM A-193 B-8M

 

Nuts:

Type 316 stainless steel nuts ASTM A-193 B-8M

Silicone bronze heavy duty nuts to ASTM B98 C65100 for option

 

MetInfo enterprise content manager system | MetInfo CMS

 

MetInfo enterprise content manager system | MetInfo CMS