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New
- POSRV - Pilot Operated Safety Relief valve
August 2010, LESER will introduce a new product series:
the pilot operated safety valve. Both pop-action (Series
810) and modulate- action valves (Series 820) are
available. The own-media-controlled POSV offers the
advantage that the plant can be run close to the set
pressure of the valve. This leads to an increase in the
capacity utilization and consequently of the efficiency
of the plant. Furthermore, POSVs allow higher external
back pressures than spring-loaded safety valves
Main valve
Series 810
Series 820
Pop Action Pilot
Modulate Action Pilot
Proven Technology
By means of the harmonized standard DIN EN ISO 4126-4
pilot-operated safety valves are now also approved in
Europe. For decades already their technology
has been proven in the American market and in the Middle
East.
Short Lead times
The LESER POSV will be available with a short 4 week
lead time ex works. As a special design feature, the
tubing between the pilot valve and the main valve
is integrated in the main valve cover, reducing the risk
of damage or freezing. The backflow preventer is
included as standard.
Characteristics at a glance
- Design completely in compliance with API Std 526
- Valve sizes from 1" x 2" to 8" x 10" (DN 25 to DN 200)
- Orifice D to T
- Flange pressure ranges according to ASME B16.34 CL150
- CL600, 36-1480 psig (2,5-102 bar)
- Flange pressure ranges according to DIN EN PN 10 - PN
63 (DIN EN), 2,5-63 bar (36-913 psig)
- Body materials WCB, CF8M, LCB; 1.0619, 1.4408
- Approval according to ASME VIII, PED and VdTÜV for
first shipments
Advantages at a glance
- Tightness guaranteed up to 97% of set pressure -
operating pressure can be close to set pressure
- Shorter blow down for less product loss
- Lower risk of damage due to a reduction of the
exterior piping
- Backflow preventer included as standard
- Fast availability!
Further Information
For first information, please refer to the
Preliminary Catalogue
or contact our Division Manager:
vinodh@arabigsis.com /
gsiscom@omantel.net.om
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