Home/Products/Anderson Greenwood Whessoe 4020A Atmospheric Pressure and Vacuum Valves

Anderson Greenwood Whessoe 4020A Atmospheric Pressure and Vacuum Valves

Any questions?

Joachim Nyqvist
Solution Seller
Phone. +46 54-57 92 17

Joakim Karlsson
Solution Seller & Product Manager
Phone. +46 54-57 92 16

Anders Praem
Inside Sales Engineer
Phone. +45 2137 7759

Slawka Pedersen
Inside Sales Manager
Phone. +45 2137 7702

Henna Ketoja
Inside Sales Engineer
Mob. +358 400 612 124

Tommi Penttilä
Sales Manager Conventional Power
Phone. +358 207 416 208
Mob. +358 40 512 2308

Anderson Greenwood™ Whessoe 4020A are weight or spring loaded valves capable of providing pressure and vacuum relief that vent to atmosphere.

Anderson Greenwood CHEMICAL & PETROCHEMICAL MARINE OIL & GAS PHARMA & LIFE SCIENCE REFINERY

Increased flow capacities reduce the required valve size and the corresponding connections and piping costs.
Fully open at 10% overpressure, enabling setting close to MAWP/MAWV and minimizing tank emissions.
Large body for increased capacity providing high flow performance for full conformance to API2000/ISO28300.
Leakage rate of 0.5 scfh (0.015 Nm3 /hr) or less at 90% of setpoint.
Weight or spring loaded models available.
Choice of body materials.
Modular design enables all components to be removed and replaced in-situ for quicker, simpler maintenance.
Optional ‘all-weather’ coating prevents frozen condensate build-up and sticking of vital components in cold weather applications.