DESIGN DESCRIPTION:

DOUBLE DISCS

SWING TYPE

WAFER CONNECTION TYPE

PRESSURE  GRADE : CLASS 150 CLASS 300 CLASS600  CLASS 900 CLASS1500

SIZE : DN 50 –DN1500

WORKING PRESSURE AND TEMPERATURE

CARBON STEEL :-29 C~425 C 6 F~822 F

STAINLESS STEEL: -40 C~550 C 15 F~1047 F

GENERAL DESIGN SPECIFICATIONS:

ITEM :AMERICAN STANDARD

MANUFACTURE :API 6D OR API 594

PRESSURE-TEMPERATURE RATINGS :ANSI B16.34

INSPECTION AND TEST :API 598

TEST PRESSURE TO API 598 OR BS 6755 PATRT 1

ITEM :CLASS 150   CLASS 300  CLASS 600

CLASS SHELL (WATER) : 3.1MPA 450PSI   7.8MPA 1125PSI     15.3MPA 2225PSI

SHELL (AIR) : 2.2MPA 315PSI   5.6MPA 815PSI   11.2MPA 1630PSI

SEAT (WATER) : 2.2MPA 315PSI   5.6MPA 815PSI 0.6MPA   1.2MPA 1630PSI

 SEAT (AIR) : 0.6MPA 80PSI    0.6MPA 80PSI  0.6MPA 80PSI  0.6MPA 80PSI

BACK SEAT(WATER) : 3.1MPA 450PSI    7.8MPA 1125PSI  15.3MPA 2225PSI

PARTS AND MATERIAL (ASTM)

1 BODY  :A216-WCB,A351 CF8, A216 WCB, A351 CF8M, A351 CF3M

2 DISC: A216-WCB,A351 CF8, A216 WCB, A351 CF8M, A351 CF3M

3 SPRING HOLDER :A182 F304L, A216 WCB

4 SPRING INCONEL:-750, A351 CF8, A351 CFBM

5 STEM :F6a, F304,F316,F304L, F316L

6 PLATE-LUG BEARING: A182 F304L

7 BOLT :CARBON STEEL

8 RETAINER :A182 F304L

9 GASKET: A182 F304L

OTHER MATERIALS ARE AVAILABLE UPON REQUEST