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Series L20517

Description

Barksdale's pressure regulators are sensitive pressure-control devices used to maintain a pre-determined pressure in a hydraulic circuit. The regulated output pressure can be controlled either by the force of a spring, or a motor (hydraulic or pneumatic). Design features ensure excellent accuracy, repeatability and high flow coefficients.

Designed to provide years of trouble-free operation and virtually zero leakage, the Shear-Seal® design uses fluid pressure to maintain a leak-free metal-to-metal seal that improves with use. The shearing action between the rotor & pressure seal continually laps the mating surfaces and prevents contaminates from lodging between the sealing surfaces. The result is a valve that doesn’t wear out – but wears in over time, providing you superior control consistently through the entire life of the product.

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Features

  • Original Shear-Seal® technology
  • High flow capacity
  • Large regulated pressure range
  • Tolerates contaminated media
  • Fail-safe motor control options
  • Self venting
  • Surge dampening

Technical specifications

General Specifications*

Pressure:
Supply/Inlet Pressures:


Regulated Pressure Range at 3,000 psi Supply Pressure:
High Sensitivity:
Full Range:

Regulated Pressure Range at 5,000 psi Supply Pressure:
High Sensitivity:
Full Range:

Ambient Temperature Range:

Inlet Proof Pressure:

Case Proof Pressure:

3,000 psi (207 bar)
5,000 psi (345 bar)


300 - 1600 psi (21 - 110 bar)
300 - 2800 psi (21 - 193 bar)


500 - 1600 psi (34 - 110 bar)
500 - 3000 psi (34 - 207 bar)

-30° to +185°F (-34° to +85°C)

7,500 psi (517 bar)

4,500 psi (310 bar)
Flow:
Flow Rate:
Cv Inlet:
Cv Vent:

120 GPM (@ 50 ft/s)
17.5
1.6
Porting:
Supply 1:
Supply 2:
Outlet (Regulated):
Vent:

1” NPT Standard, SAE Optional
1” NPT Standard, SAE Optional
1-1/2” NPT Standard, SAE Optional
1” NPT Standard, SAE Optional
Materials of Construction:
Body, Flanges, & Spring Housing:
Slide, Inlet, Vent, & Blocking Plates:
Hardware:
O’ring Material:
Backup Ring Material:
Socket Head Screws:
Wetted Parts:

Phosphate coated carbon steel/ductile iron
400 Series stainless steel
Plated alloy steel, 300 series stainless steel
Buna N
Teflon
Zinc plated alloy steel (std.)
Stainless steel
Pneumatic Pilot Motor (“F” prefix):
Pilot Motor Working Pressure:
Porting A & B:
Operating Temperature Range:

80 - 120 psi (5.5 - 8.3 bar)
1/4” NPT
-30° to +185°F (-34° to +85°C)
Hydraulic Pilot Motor (“G” prefix):
Pilot Motor Working Pressure:
Porting A & B:
Operating Temperature Rating:

400 - 1600 psi (6.9 - 110 bar)
SAE for 3/8” Tube (Size -6)
-30° to +185°F (-34° to +85°C)
Approximate Shipping Weight:
Manual Unit:
Pneumatic Motor Unit:
Hydraulic Motor Unit:

70 lbs. (31.8 kg)
90 lbs. (40.8 kg)
90 lbs. (40.8 kg)
* See product configurator for additional options.