DN25-DN250(1″一10″  ) wafer type,flanged type

DN300-DN500 (12″一20″  )flanged type

Pressure rating:

DINPN10、 PN16、 PN25 

ANSI 150

 1. End flanges:

GB/T9113.1-2010、 JB/T79.1-1994、 HG20592-2009

ASMEB16.5  EN1092-1: 2001

2. Pressure/temperature rating:

GB/T 12224-2007 ASME B16.34-2003  IS07005-1

3. Face to face

Wafer type:Manufacturer standard

Flanged type:ISA S75.04-1995, IEC/DIN534-3-2

4. working temperature:

Normal temperature

Middle temperature

High temperature

5. Pressure test standard

Shell and seat test: GB/T4213-2007

Metal seat leakage rate: The below table will be used if oustomer doesn' t have any special requirements. If the customer has special requirement, then leakage rate will be in aocordanoe with spec GB/T 4213-2007 V class V.

Shell test pressure shall be1.5times of PN, the pressure rating determined for material at38℃listed in ASTM B16.34.Stem packing and seat test pressure shall be1.1 times the pressure rating determined for material at38℃listed in ASTM B16.34. Seat test shall be done under max. differential pressure. When max. differential pressure is not specified, then it will be tested under pressure at1.0 MPa(hydrostatic pressure). When defined max. differential pressure is less than 0.6MPa, then it will be tested under pressure at 0.6 MPa. Test Fluid shall be fresh water containing a corrosion inhibitor. 

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