OMB Valves S.p.A
. Forged steel GATE, GLOBE & CHECK Valves Installation, Operation and Maintenance Manual Rev.5- 2016
Via Europa,7 Cenate Sotto 24069 (BG) Italy
Tel: +39 035 4256711
Fax: +39 035 942638
www.ombvalves.com
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1. INTRODUCTION AND THEORY OF OPERATION
Gate Valves
: Gate valves are designed to close off or open up the flow in a pipeline. The wedge/Gate is designed
to stop flow completely and form a tight seal against pressure in either direction. The wedge is completely out of
the flow stream in the open position. Gate valves are not designed for throttling use.
Limitation:
•
Not recommended to use for flow regulation or throttling.
•
Must not use for slurries or fluids containing solids that can build up in valve cavities.
Globe Valves:
Globe valves are designed to close off, open up or throttle the flow in a pipeline. The disc is designed
to stop flow completely and form a tight seal with pressure under the disc.
Limitation:
•
Not use if full flow at minimal pressure drop is required.
•
Must not be used for slurries or fluids containing solids that can build up in valve cavities.
Check Valves:
Swing check valves are designed to open by the system pressure in a line. The normal direction of
flow in the line will open the valve, and any attempt by the flow to reverse will close the valve completely. The
check valve typically does not require any outside force or signal to operate properly. Check valves allow flow in
one direction only.
Limitation:
•
Must be installed the same direction that shows with an arrows on the body.
•
Must not be used for slurries or fluids containing solids that can build up in valve cavities.
2. PRESSURE AND TEMPERATURE RATING
Pressure and temperature rating of the valve shall be properly selected for the service requirement. Valves shall
not be used for different services than specified on purchasing order at first place.
FOR ANY UNCLEAR INFORMATION IN THIS MANUAL PLEASE CONTACT OMB VALVES
CUSTOMERCARE DEPARTMENT FOR ASSISTANCE:
EMAIL
TEL: +39 035 04 38 711
OMB VALVES S.P.A TECHNICAL SUPPORT TEAM INCLUDES EXPERIENCED ENGINEERS AND
TECHNICIANS , PROFESSIONALLY TRAINED AND HIGHLY QUALIFIED TO OPERATE ON-SHORE
AND OFF-SHORE SERVICES. OUR STAFF ARE READY AND AVAILABLE IN OMB VALVES S.P.A
HEADQUARTER TO BE PRESENT IN YOUR SITE AND PROVIDE REQUIRED TECHNICAL SERVICE
AND INFORMATION TO PROTECT YOUR SYSTEM.
