Product overview:
Forged steel gate valve 's valve cover design have three forms. The first is a bolt type valve cover, according to this design the form of the valve, the valve body and valve cover bolt connection, spiral wound gasket (304 with flexible graphite manufacturing) or metal ring seal. Second kinds of design form is welding type valve cover, according to this design the form of the valve, the valve body and valve cover with a threaded connection, welded seal. Customers with special requirements can be used when full penetration welding connection. The third is self tight pressure valve cover, according to this design form design of the valve, the valve body and valve cover with a threaded connection, pressure from the seal ring seal.
Technical specification:
Design and manufacture: API 602,BS5352,ANSI B16.34
Size: 1/2" ~ 3"(DN10-50)
Pressure range: 150LB-2500LB (PN16-100)
Valve body material: A105; LF2;F5;F22;304(L),316(L); Monnel; 20 alloy; etc.
Design features:
Bolt Connect the valve cover,the lever bracket
Or welding valve cover and lever bracket
Pressure self-tightening sealing cover
Connection: flange, thread, socket welding, butt welding
Standard material list:
No. | Part name | CS to ASTM | AS to ASTM | SS to ASTM | |
TypeA105 | Type F22 | Type F304(L) | Type F316(L) | ||
1 | Valve body | A105 | A182 F22 | A182 F304(L) | A182 F316(L) |
2 | Valve seat | A276 420 | A276 304 | A276 304(L) | A276 316(L) |
3 | Gate | A276 410&430 | Al 82 F304 | A1 82 F304(L) | A182 F316(L) |
4 | Valve stem | A182 F6 | A182 F304 | A1 82 F304(L) A182 F316(L) | |
5 | Gasket | 316 clamping flexible graphite Corrugated SS+graphite | 316 clip PTFE SS+PTFE | ||
6 | Valve cover | A105 | A182 F22 | A182 F304fLl | A182 F316(L) |
7 | Stem bolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M |
8 | Cylindrical pin | A276 420 | A276 304 | ||
9 | Packing gland set | A276 410 | A182 F304(L) Al 82 F316(L) | ||
10 | Live bolt | A193 B7 | A193 B16 | A193 B8 | A193 B8M |
11 | Packing pressure plate | A105 | A182 F11 | A182 F304(L) | A182 F316(L) |
12 | Nut | A194 2H | A194 4 | A194 8 | A194 8M |
13 | Valve stem nut | A276 410 | |||
14 | Lock nut | A194 2H | A194 4 | A194 8 | A194 8M |
15 | Nameplate | SS | |||
16 | Hand wheel | A197 | |||
17 | Lubricate the gasket | A473 43l | |||
18 | Packing | Flexible graphite | PTFE | ||
Applicable medium | Water, steam, oil etc. | Water, steam, oil etc. | Nitric acid, acetic acid etc. | ||
Applicable temperature | -29℃～425℃ | -29℃～550℃ | -29℃～180℃ | ||
