3000 Series Blanket Gas Regulators

Model 3011L, 3011H, 3011HP, 3020A

3000 Series Blanket Gas Regulators

The 3000 Series Blanket Gas Regulators from Groth Corporation ensure that a constant gas pressure is maintained in the vapor space of a storage tank. A blanket gas regulator supplies an inert gas to prevent a vacuum from developing when liquid is removed from a tank, to maintain the desired blanket pressure when the temperature drops, and to prevent outside air from contaminating the tank or creating a flammable or explosive environment. A blanket gas pressure as low as 0.5" W.C. prevents outside air and moisture from entering the storage vessel and reduces the evaporation of the stored product to a negligible amount. The result conserves product, greatly reduces emissions, and protects the tank from external fires. Click here for more information.


Size: 0.5" (DN15), 1"(DN25)

Material: Available in stainless steel or other material by request

Pressure: Setting ranges from 0.5 InWC to 15 psig

Certification: • ATEX Certified (3011H & 3011L) • Canadian Registration Number (CRN)


• Bubble-tight shut-off
• Variable orifice, field-adjustable flow capacity
• Single stage regulator
• Modulating opening
• Minimal lockup and droop
• Low maintenance cost
• Provides optimum gas blanketing of tank and product being stored
• Prevents evaporation of product and reduces corrosion of tank by providing blanketing gas in vapor space
• Prevents a flammable or explosive environment in the tank vapor space
• Ensures pressure is maintained in the vapor space of a storage tank
• Eliminates the need for a multiple regulator system or for complicated pilot operated blanketing



• Soft Goods - Buna-N, FFKM, EPDM, FKM