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518, 526 Series Microtorque Valve
Directional control for fluid power applications up to 6,000 psi - compact design
Shear-Seal Manual Control Valve

 

Description

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.

518, 526 Series Microtorque Shear-Seal Manual Control Valve
Directional control for fluid power applications up to 6,000 psi - compact design

 

Features

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

 

Technical specifications

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:
2-position:
3-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
* 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 factory

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. Cv
Factor
518 Series Interflow 1.4 (5.6) 2.8 (11) 0.17 " 0.4
526 Series
Non-Interflow 		0.36 (1.4) 0.72 (2.7) 0.086 " 0.09

 

 

Applications

  • Work holding clamps and systems
  • Hydraulic presses and lifting systems
  • Hydraulic test equipment
  • Grease injection equipment
  • Hydraulic power units

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美国DMK Engineering Solutions公司
信德迈科技(北京)有限公司 CNMEC Technology

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