518, 526 Series

  • Original Shear-Seal® technology
  • Compact design
  • Non-interflow option
  • Spring return option
  • Multiple handle types
  • 2 or 3 position detent
  • Panel mount option

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 oil
Working Pressure: 6,000 psi (415 bar) **
Flow Capacity, Cv: See table
Back Pressure: Must not exceed 250 psi (17.2 bar)*** at return port for satisfactory operation
Proof Pressure: 1-1/2 times working pressure except at return port
Burst Pressure: 2-1/2 times working pressure except at return port
Media Temperature Range: -40° to +250°F (-40° to +121°C)
Porting: 1/4” NPT, SAE for 1/4” tubing, or DO3 pattern for manifold mounting
Mounting: Panel mountable with p/n 22357 mounting nut (-P option) DO3 Manifold mounting shipped with (4) #10-24 screws and O-Rings
Handle Rotation: 90°; 45° each side of center position
Detent at 90° positions
Detents at center and 2 extreme positions
Optional Spring Return: Available to center or either shifted position 5,000 psi (345 bar) max working pressure on spring return option
Body & Housing: Anodized aluminum
Shaft, Rotor, Pressure Seals: 400 series stainless steel
Standard O-Rings: Buna N, others available
Back-up Rings: Tefl on
Bearings: Hardened steel
Shipping Weight: .95 lbs

Flow Capacity Table

Flow 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.
518 Series Interflow 1.4 (5.6) 2.8 (11) 0.17 “ 0.4
526 Series
0.36 (1.4) 0.72 (2.7) 0.086 “ 0.09


There are no reviews yet.

Be the first to review “518, 526 Series”

Your email address will not be published. Required fields are marked *

Contact Us Directly

  • Contact Details