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|phone:||nz:||0800 236 244||aus:||07 3279 2020|
|fax:||nz:||0800 329 236||aus:||07 3279 2021|
Pressure Vacuum Valve
A world first valve that delivers venting, vacuum protection, over-pressure protection and overfill protection for your tankers or static silos, minimising the risk of plant damage and the resulting repair costs.
The Mercer PV Valve offers protection against normal volume changes during transportation and routine operation on road and rail tankers. It also provides pressure and vacuum protection for your vessels and tanks during filling and emptying where potential failure situations occur. Additionally, it offers protection from over-filling should an already full tank continue to be filled. The PV Valve offers a solution to the problem of on-road leakage caused by product surge due to the incorporation of a dwell time in the pressure relief function.
The PV Valve design has been enhanced by the development of a patented filter kit to EU5 level that can be retrofitted to existing valves. This allows for the protection of your transported or stored food products, avoiding the possibility of the ingress of contaminated air, especially while in transit. All Mercer PV Valves are able to be fitted with an internal CIP system. Those installations where the CIP header is inside the tank, cleaning is available through the addition of a directional cleaning jet positioned immediately under the valve. External pipe work is easily connected to the valve via a teflon tube reducing maintenance costs and improving access for maintenance staff.
Please email Terry Moratti with your questions or initial enquiries.
|Allows air equalisation during filling & emptying||Yes||Yes||Yes||Yes|
|Actuated to reduce stress under normal filling & emptying conditions||Yes||Yes||No||Yes|
|Normal position without actuation||Open||Open||N/A||Closed|
|Sight Rod shows valve position||Yes||Yes||Yes||Yes|
|External connection to CIP system||8mm nylon||8mm nylon||N/A||6mm nylon|
|Over filling protection||Yes||Yes||Yes||Yes|
|Dwell time to eliminate on-road leakage through product surge||Yes||Yes||Yes||Yes|
|Air actuation supply connection||6mm dia.||6mm dia.||N/A||6mm dia.|
|Air actuation supply pressure (minimum)||350 kPa||350kPa||N/A||350 kPa|
|Construction material||316 stainless||316 stainless||316 stainless||316 stainless|
|Sealing piston material||UHMW||UHMW||UHMW||UHMW|
|Design fill rate||2 000l/min||2 000l/min||500l/min||500l/min|
|Design discharge rate||2 000l/min||2 000l/min||500l/min||500l/min|
|Vacuum protection||-3.5 kPa||-3.5 kPa||-3.5 kPa||-3.5 kPa|
|Over pressure protection||3.5 kPa||3.5 kPa||3.5 kPa||3.5 kPa|
|Fitting required on tanker||150mm RJT male||120mm RJT male||76mm RJT male||76mm RJT male|
|CIP requirements @ .5 bar||720L/hr||1140L/hr||N/A||360L/hr|