The prevention of collapse due to internal vacuum is the reason Gresswell have designed the FIG400 Anti-Vacuum Valve, as it is used to relieve unwanted vacuum conditions in storage tanks and cylinders.

FIG400 valves can also be used on steam systems to help condensate drainage. The Gresswell FIG400 can be supplied in brass, bronze and stainless steel.

Size Range:

  DN15 (1/2") TO DN25 (1") = Brass or Stainless Steel
  DN32 (1 ¼") TO DN100 (4") = Bronze or Stainless Steel

Pressure Range:

  Can be set to minus 28" HG

Pipe Connections:

  BSP, BSPT,NPT, Flanged

Features and Benefits:

  Able to accommodate customer's connection requirements.
  Quality assurance approved to BS EN ISO 9001: 2008.

Testing:

All Gresswell Relief Valves are given a hydraulic seat tightness test before leaving the factory and all valves are supplied pre-set. Special tests or witness testing can be arranged at extra cost.

Flow Substance:

  Liquid
  Steam
  Gas

Pricing:

For pricing information, please fill out this Enquiry Form and we shall reply with a quotation to match your specifications. Unfortunately, we are unable to price these products over the telephone.

General Purpose Pressure Relief Valves

G36 General Purpose Pressure Relief Valves
G55 General Purpose Pressure Relief Valves
G90 General Purpose Pressure Relief Valves
FIG134 and FIG134EL General Purpose Pressure Relief Valves

High & Full Lift Safety Relief Valves

G100 High Lift Safety Relief Valves
S2000 and S2000DT Full Lift Safety Relief Valves
S2000SS and S2000SSDT Full Lift Safety Relief Valves

Open Discharge Pressure Relief Valves

FIG133 Open Discharge Pressure Relief Valves
FIG124 Open Discharge Pressure Relief Valves

In Line Discharge Pressure Relief Valves

FIG140 In-line Pressure Relief Valves
FIG141 In-line Pressure Relief Valves
FIG142 In-line Pressure Relief Valves

Liquid Relief Valves

FIG160 Liquid Relief Valves

High Pressure Relief Valves

FIG154 High Pressure Relief Valves
FIG234 High Pressure Relief Valves
FIG236 High Pressure Relief Valves
FIG254 High Pressure Relief Valves

Anti-Vacuum Valves

FIG400 Anti-Vacuum Valves
FIG400SS Anti-Vacuum Valves

Vacuum & Pressure Relief Valves

FIG170 Pressure and Vacuum Relief Valves

Pedal Valves

FIG550 Pedal Operated Globe Valves

Enquiry Form

Enquiry Form

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