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Protect Your Tank from Damage with Groth Corporation’s Newest Valve


Extensive research and development have produced a product that achieves both superior sealing performance and industry leading flow rates, while also allowing customers to reach their required flow rates with a potentially smaller sized valve and utilize 10% overpressure technology. The Model 12F-TWW-0 Pressure/Vacuum Relief Valve is designed to protect your tank from damage created by overpressure or excessive vacuum. Costly product evaporative losses due to normal tank “breathing” are greatly reduced. 

Features & Benefits

  • This valve is designed to work with a 10% overpressure.

  • Product leakage and fugitive emissions are reduced via ultra-tight sealing.

  • Higher flow capacity to protect from both excessive pressure and excessive vacuum build up.

  • Peripheral and central seat guides ensure reliable, repeatable performance.

  • Designed for easy maintenance, thus reducing downtime and operational cost.

Options & Technical Details:

Corrosion resistance can be enhanced with fluorocarbon-based fluoroelastomer or fluorine rubber / fluoro-rubber (FKM) soft goods.

  • Size: 2” through 12”

  • Body Material: Aluminum, Carbon Steel, Stainless Steel

  • Pallet Material: Aluminum, Stainless Steel

  • Diaphragm Materials: Buna-N, Blue FKM or FEP

  • Weight Material: Zinc-Plated Steel, Stainless Steel

  • Bolting Class: 150# ASME, PN10, PN16, JIS drilling classes available

  • Available Pressure Settings: 0.5 osig to 24 osig

  • Available Vacuum Settings: 0.464 osig (2barg) to 24 osig

  • Superior tightness, exceeding API-2000 leak requirements

  • PED and ATEX Certified

About Groth Corporation:

Established in 1960, Groth Corporation is a global leader in manufacturing pressure/vacuum relief valves, deflagration and detonation flame arresters, blanket gas regulators, and other low-pressure relief products. Groth pressure relief products have been protecting refineries, chemical processing plants, and facilities with atmospheric storage tanks for more than 50 years.


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