Toxic and Harmful Fluid Valve

Design Standards

Design and manufacturing: ASME B16.34 BS1873 BS5352 GB/T12235 GEST89/140

Structural length: ASME B16.10 GB/T12221

Connection method: GB/T9113 ASME B16.5 (flange) ASME B16.11 (socket welding) ASME B16.25 (butt welding)

Pressure and temperature: ASME B16.34

Test and inspection: API598 GB/T26480

Helium mass spectrometry leak detection: API602 MSS SP-117

Structural Features

● Various actuators can be equipped according to requirements to set adjustment functions;

● The bellows assembly has a minimum of 15 '000 full-stroke open/close cycles at the maximum pressure level. Generally use HAC276 material, with excellent corrosion resistance;

● Fully automatic surfacing welding allows the valve stem, bonnet, and valve body to form a barrier between fluid and the atmosphere to ensure zero leakage;

● The sealing surface is made of cemented carbide surfacing, with excellent partition property;

● Valve seat sealing level:

Class 1: Class IV ASTM/ANSI B16.104

Level 2: Class VI ASTM/ANSI B16.104

Level 3: Use helium to detect leaks at maximum differential pressure

Main Parts & Materials

Body--carbon steel A105 stainless steel 304/316/316L

Disc——carbon steel 25#stainless steel 304/316/316L

Bellows——Carbon steel 304 stainless steel 304/316/316L

Lower valve stem——carbon steel 12Cr13 stainless steel 304/316/316L

Seat——Stellite 6(≈42HRC)

Gasket——Metal wound gasket

Filler——PTFE, PPL, flexible graphite

Note: Applicable temperatures: PTFE≤150/°C, PPL≤250/° C, graphite ≤600/° C, carbon steel and stainless steel ≤350/°C

Application Scenarios

Suitable for industries with extreme requirements for safety and sealing, such as petrochemicals, pharmaceuticals, nuclear power, pesticides and special chemicals.