Spool valves
Found 8 free book(s)
Simp Valves Guide - OMEGA Engineering
www.omega.co.ukSpool Valves, 4-Way, 5-Port The 4-way spool valve can be controlled by using two operators, one on each end or by a spring return and a single operator. The flow path when actuated at the 14 end of the valve is from port 1 to port 4 and from port 2 to port 3. Port 5 is blocked. When the valve is actuated from the 1 2 end, the flow path
Electro-hydraulic Valves - A Technical Look
www.moogvalves.comValves (DDV). To increase the spool actuation force, the main spool of pilot operated valves is operated hydraulically by a pilot valve. By hydraulically amplifying the electrical command signal, pilot operated valves can reach very high spool actuation forces and thus be built up to very large rated flows.
TROUBLESHOOTING FOR RELIEF VALVES USED IN …
www.mech-ing.compressure constant. There are two types of valves that are commercially available such as, direct and pilot type (9). 3. Types of Relief Valves 3.1. Direct Acting Type It is usually a poppet, but other geometries such as a ball or a spool may be encountered. During normal system operation, the regulating element is held in a fluid blocking
SERVO VALVES PILOT OPERATED - Moog Inc.
www.moog.comsecond stage spool. The second stage is a conventional four-way spool design in which output flow from the valve, at a fixed valve pressure drop, is proportional to spool displacement from the null position. A cantilever feedback spring is fixed to …
PVG 32 Proportional Valves Service Parts Manual
www.grouphes.com6. Pressure adjustment spool 7. Plug, closed center 8. LS-connection 9. LS-signal 10. Shuttle valve 11. Main spool 12. LS-pressure relief valve 13. Shock and suction valve, PVLP 14. Pressure compensator 15. LS-connection, port A 16. LS-connection, port B 17. Anti cavitation valve, PVLA 18. Load drop check valve 19. Pilot supply for PVE 20.
G631 Product Catalog - Moog Inc.
www.moog.comspool. The pilot stage is a symmetrical double-nozzle and flapper, driven by a double air gap, dry torque motor. Mechanical feedback of spool position is provided by a cantilever spring. The valve design is simple and rugged for dependable, long life operation. These valves are suitable for electrohydraulic position,
Swagelok Ball Valve Actuation Options
www.swagelok.comspool, poppet Aluminum Spool O-ring Buna N Fasteners Zinc-plated alloy steel Lubricants Silicone- and PTFE-based Solenoid valves are assembled with brass Swagelok fittings . Copper tubing is used with double-acting actuators . Solenoid Valve (4-way, 2 position model shown) Operating Modes Air pressure is required to cycle the ball valve .
SPOOL VALVES 3/2-5/2 pilot operated or air operated, spool ...
www.emerson.comAll leaflets are available on: www.asco.com Pneumatic Valves (3/2 - 5/2 - NAMUR) - 59 FEATURES • The solenoid operated spool valves have threaded port connections and NAMUR interface • The same spool valve can be adapted for 3/2NC or 5/2 functions for controlling double-acting and single-acting actuators • All the exhaust ports of the spool valve are connectable, …