VALVE DESIGN DATA
Size: 1/2"-20"
Operating pressure:
Type A：+355pa(+36mmH2O) -295pa(-30mmH2O)
Type A:+355pa (+36mmH2O) -295pa (-30mmH2O)
Type B：+980pa(+100mmH2O) -295pa(-30mmH2O)
Type B:+980pa (+100mmH2O) -295pa (-30mmH2O)
Type C：+1950pa(+200mmH2O) -295pa(-30mmH2O)
Type C:+1950pa (+200mmH2O) -295pa (-30mmH2O)
Type D: according to user requirement (special pressure rating
Nominal pres sure:  Class 150Lb PN1.6MPa
Material:  WCB,LCB,CF8,CF8M,CF3,CF3M,A105,LF2,F304,F316,F304L,F316L
Design & Manufacture Std.: API RP 2000、API520、API526  GB/T12243
Face to Face Std.: API RP 2000
End Connection Std.: ANSI B 16.5
Test Standard:  API RP 2000
API RP 2000 Venting Atmospheric and Low-Pressure Storage Tanks Nonrefrigerated and Refrigerated
API RP 520 Sizing Selection and Installation of Pressure - Relieving Devices in Refineries
API RP 521 Guide for Pressure-Relieving and Depressurizing System
API Std 526 Flanged Steel Safety - Relief Valves
API Std 527 Seat Tightness of Pressure Relief Valv
Std 620       Design and Construction of Large, Welded, Low-Pressure Storage Tanks
Std 650      Welded Steel Tanks for Oil Storage
Std 2510     Design   and   Construction   of   Liquefied Petroleum Gas (LPG) Installations
RP 576        Inspection of Pressure-Relieving Devices
Publ 2210     Flame Arresters for Vents of Tanks Storing Petroleum Products
RP 2350      Overfill Protection for Petroleum StorageTanks
Bull 2521    Use of Pressure-Vacuum Vent Valves for Atmospheric Pressure Tanks to Reduce Evaporation Loss
ANSI/ASME B16.5  Pipe Flanges and Flanged Fittings
ASME B31.3  Process Piping
ANSI/ASME B31.4  Pipeline Transportation System for Liquid Hydrocarbons and Other Liquids 

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