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Stainless steel vacuum relief valve with 1 inch NPT male inlet

Control Devices

Control Devices VRGSS100-001 Vacuum Relief Valve 1" NPT

SKU CH-EBXY-5BSZ3

Stainless-steel vacuum relief valve with 1" NPT male inlet protects low-pressure tanks and steam vessels up to 13.3 psi and 400 °F

  • Stainless steel body resists corrosion in harsh environments
  • Proportional relief design protects low-pressure tanks and steam vessels
  • Operates from -20 °F to 400 °F for wide temperature range
  • 1" NPT male inlet enables direct pipe connection
  • Flow capacity up to 50 cfm at 13.3 psi cracking pressure

Stainless-Steel Vacuum Relief Valve 1" NPT

The Control Devices VRGSS100-001 is a proportional vacuum relief valve built from stainless steel with a 1" NPT male inlet. It protects low-pressure tanks, steam vessels and vacuum equipment by opening automatically when vacuum exceeds the set point.

Installers needing 13.3 psi maximum operating

This valve suits systems that operate between -20 °F and 400 °F and require a cracking pressure up to 13.3 psi. It is not for applications that demand a higher flow capacity, a different inlet size or a cracking pressure outside the 0 in Hg to 13.3 psi range.

1" NPT male inlet port

The single specification that decides fit is the 1" NPT male inlet connection; verify that your vessel or piping matches this exact thread size and gender before ordering.

How it compares

Measured against everything we stock in Compressors, Inflators & Vacuum Pumps, at today’s prices. Recalculated every night.

Price $321.99
Pricier than about 90% of the 1,520 comparable items (median $36.99).

Specifications

Product
Brand nameCONTROL DEVICES

Questions about this item

How do I confirm the valve is relieving vacuum at the correct pressure after installation?

The valve begins to open at 0 in Hg and reaches full flow at 13.3 psi, so a pressure gauge on the tank should show relief starting within that range.

What comes with the VRGSS100-001 and what must I supply myself?

The valve body with 1" male NPT inlet is supplied; you must provide the mating 1" female NPT fitting, pipe sealant and any mounting hardware.

Which cracking-pressure version should I choose for a low-pressure tank rated to 13.3 psi?

This model covers 0 in Hg to 13.3 psi, matching the tank's maximum operating pressure, so no alternative version is required.

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