Valves

Stainless steel specialty gas cylinder valve connections

SGA stock a small selection of stainless steel specialty gas cylinder valve connections suitable for Australian gas cylinders. Having stock readily available enables our customers to arrange a quick replacement of a faulty valve and get their cylinder back into service. The cylinder valves are made in Europe and approved for use by Air Liquide and Linde gas. All valves are supplied with a two year warranty.

Current stock includes:

Cylinder Valve Connection to AS2473.2 Type 32
(For use with ammonia and sulphur dioxide)

Cylinder Valve Connection to AS2473.2 Type 40
(For use with cyanogen, ethylene oxide, hydrogen cyanide and vinyl chloride)

Cylinder valve connection to AS2473.2 Type 43
(For use with hydrogen bromide, hydrogen chloride, hydrogen sulphide and methyl mercaptan)

Cylinder valve connection to AS2473.2 Type 44
(For use with non-flammable toxic mixtures)

Cylinder valve connection to AS2473.2 Type 45
(For use with flammable toxic mixtures)

DIASPEC S200 Series – Stainless steel high pressure diaphragm seal valve

Features

  • Low operating torque guaranteed due to soft sealing
  • Valve seat secured against extrusion
  • Extreme leak tightness achieved by diaphragm sealing
  • High Flow Capacity to allow fast filling and vacuum
  • Clean room assembly
  • 100% helium leak test
  • All markings on the valve neck protected against damage
  • All inlet and outlet standards available

Technical Data

Maximum Service Pressure 230 Bar
Pressure Test 276 Bar
Temperature Storage -40°C to +65°C
Minimum Life Cycle 2,000
Helium leak Rate
Internal 10E-7 atm cc/s
External 10E-7 atm cc/s
Safety 10E-8 atm cc/s
Flow coefficient CV 0.4
Diaphragm AISI 316 L, Hastelloy or Stainless Steel
Seat orifice dimension 4mm

Material Components

Body Material: AISI 316 L
Diaphragm: Hastelloy Stainless Steel
Spindle: AISI 316 L
Seat Disc: PA6,6 PCTFE
Bursting disc: NickelAISI 316 L

DIASPEC TD S200 Series – Stainless steel high pressure tied diaphragm seal valve for high purity gases

Features

  • Low operating torque guaranteed thanks to the teflon coated upper stem
  • Valve seat pad secured against extrusion
  • Extreme leak tightness achieved by back-up welded diaphragm sealing
  • High Flow Capacity to allow fast filling and vacuum purging
  • Clean room assembly
  • 100% helium leak test
  • All markings on the valve neck protected against damage
  • All inlets and outlets standards available
  • Easy purging process allowed by reduced dead spaces and gas wetted volumes
  • Lock of threads and springs in a wet area ensures minimum particulate generation
  • Gas doesn’t contact the valve operating mechanism

Technical Data

Maximum Service Pressure 230 Bar
Pressure Test 276 Bar
Temperature – Operating -40°C to +65°C
Temperature – Storage -40°C to +65°C
Minimum Life Cycle 2,000
Helium leak Rate
Internal 10E-8atm cc/s
External 10E-8atm cc/s
Safety 10E-8 atm cc/s
Flow coefficient CV 0.4

Material Components

Body Material: AISI 316 L
Diaphragm: HastelloyStainless Steel
Spindle: AISI 430F
AISI 316 L
Seat Disc: PCTFE
Bursting disc: Nickel – AISI 316L AISI 316 L

More valves available on request.

High Pressure Cylinder Valves