Barksdale 518, 526 Series Microtorque® Valve

Barksdale's Microtorque® valve provides superior directional control for fluid power applications up to 6,000 psi where compact design and virtually zero leakage* are a must. Utilizing Barksdale's Shear-Seal® technology, the Microtorque® valve offers reliable performance and lapped metal-to-metal sealing surfaces that will easily tolerate contaminated fluids. This valve offers many options that make it extremely versatile including panel mounting, spring return, 2 or 3 position detents, DO3 manifold mounting, and non-interflow. Leveraging the flexibility and unique features of the Microtorque® valve, along with its superior performance, can result in bottom line savings and operational benefits for your customers.

General Specifications*Media:Hydraulic oilWorking Pressure:6,000 psi (415 bar) **Flow Capacity, Cv:See tableBack Pressure:Must not exceed 250 psi (17.2 bar)*** at return port for satisfactory operationProof Pressure:1-1/2 times working pressure except at return portBurst Pressure:2-1/2 times working pressure except at return portMedia Temperature Range:-40° to +250°F (-40° to +121°C)Porting:1/4” NPT, SAE for 1/4” tubing, or DO3 pattern for manifold mountingMounting:Panel mountable with p/n 22357 mounting nut (-P option) DO3 Manifold mounting shipped with (4) #10-24 screws and O-RingsHandle Rotation:90°; 45° each side of center positionDetent:
2-position:
3-position:
Detent at 90° positions
Detents at center and 2 extreme positionsOptional Spring Return:Available to center or either shifted position 5,000 psi (345 bar) max working pressure on spring return optionBody & Housing:Anodized aluminumShaft, Rotor, Pressure Seals:400 series stainless steelStandard O-Rings:Buna N, others availableBack-up Rings:Tefl onBearings:Hardened steelShipping Weight:.95 lbs* See product confi gurator for additional options.
** Consult factory for pressure up to 10,000 psi (690 bar)
*** For requirements in excess of 250 psi (17.2 bar) at return port consult factoryFlow Capacity TableFlow Capacity (Approx.)20 ft/sec
(6.1 m/s)
gpm (l/min)40 ft/sec
(12.2 m/s)
gpm (l/min)Min. Flow
Passage Dia.Cv
Factor518 Series Interflow1.4 (5.6)2.8 (11)0.17 "0.4526 Series
Non-Interflow0.36 (1.4)0.72 (2.7)0.086 "0.09

Microtorque® Valve