PILOT OPERATED CHECK VALVES


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PILOT OPERATED CHECK VALVES: Spool Control Valves inherently leak allowing cylinders to drift.  The inclusion of a P O Check Valve in the circuit will positively lock a cylinder in position.

 

Variations:

  • Single or Dual Valves.  Lock one or both ends of a cylinder respectively.

  • O Ring on Piston.  Isolates the pilot system and reduces losses in low flow systems.

  • Flat on Piston.  Speeds up valve closing on circuits with long hoses.

  • Ratio.  Standard ratio 3:1 - others available on request.

  • Vented Valves.  Prevent chattering or hunting caused by system back pressure.  Only available on single versions.

  • Soft Seats.  For leak-tight holding on low volume systems over long periods, e.g. workholding

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Valve Details:

Single Pilot Operated Check Valves Size (BSP)
V-101 Line Mounted 1"
V-137 Line Mounted 1"
V-201 Line Mounted 1/2",3/4"
V-221 Line Mounted, Vented 3/8",1/2",3/4"
V-336 Line Mounted 1/2",3/4"
V-337 Line Mounted 1/2",3/4"
V-337 Y Line Mounted 1/2",3/4"
V-411 Line Mounted, Vented 1/4",3/8",1/2"
V-427-B Line Mounted 3/8"
V-434-A Manifold Mounted 1/4"
V-434-B Manifold Mounted 3/8"
V-436 Line Mounted 1/4",3/8",1/2"
V-437 Line Mounted 1/4",3/8",1/2"
V-437 Y Line Mounted 1/4",3/8",1/2"
V-457-A Banjo Mounted 1/4"
V-457 Banjo Mounted 3/8",1/2"
V-464-A Banjo Mounted 1/4"
V-464 Banjo Mounted 3/8",1/2"
V-9510 Weldable, thru' ported 3/8"
V-9610 Line Mounted, High Pressure, 700 bar 3/8"
Dual Pilot Operated Check Valves Size (BSP)
V-338 Manifold Mounted 1/2",3/4"
V-339 Line Mounted 1/2",3/4"
V-426 Line Mounted 1/4",3/8",1/2"
V-429 Line Mounted 1/4",3/8"
V-438 Manifold Mounted 1/4",3/8",1/2"
V-439 Line Mounted 1/4",3/8",1/2"
V-453-A Banjo Mounted 1/4"
V-453 Banjo Mounted 3/8",1/2"
V-486 Line Mounted, Ideal for Cylinders 1/4", 3/8", 1/2"
VC-486_75 Weldable 3/4" OD Pipe 3/8"
VC-486 18mm Weldable 18mm OD Pipe 3/8"
V-738 Manifold Mounted 1/4",3/8"
V-9490 Line Mounted, Twin, Dual PO Check 3/8"


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Hydraulic Actuators & Controls (HAC), 10 Doman Road, York Town Industrial Estate, Camberley, Surrey, GU15 3DF
Tel: +44 (0)1276 670063 Fax: +44 (0)1276 27180 E-Mail: sales@hacltd.co.uk
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