Pressure Control Valves

RV58-20 — Relief, Direct-Acting, Poppet-Type Valve, High Pressure
  Selection guide - similar valves.
  PDF file of this page.
  STP file for RV58-20
  Request a quote.

RV58-20 Valve

SYMBOL:
RV58-20 Valve symbol

 

DESCRIPTION
A screw-in, cartridge-style, direct-acting, poppet-type, hydraulic relief valve
intended for lower flow circuits requiring low internal leakage at higher pressures.

OPERATION
The RV58-20 blocks flow from 1 to 2 until sufficient pressure is present at 1 to force the
spring-opposed poppet from its seat.
Note: The RV58-20 may not be used in cross-over relief applications — back pressure on 2.

FEATURES
• Rated for higher operating pressure of 345 bar (5000 psi).
• Bi-directional pressure option available.
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Variety of adjustment options available.
• Rapid response to pressure changes.
• Compact size.

RATINGS
Operating Pressure: 345 bar (5000 psi) maximum
Flow: 22 lpm (6 gpm) maximum
Internal Leakage: 0.25 cc per minute (5 drops/minute) max. to 75% of nominal setting
Crack Pressure Defined: bar (psi) evident at 0.95 lpm (0.25 gpm) attained
Reseat Pressure: Nominal 80% of crack pressure
Standard Spring Range: 55.2 to 317.2 bar (800 to 4600 psi)
   Shown in To Order section. Due to manufacturing tolerances, it may be possible to adjust the
   valve either lower or higher than the nominal rating shown. If the valve is adjusted beyond the
   recommended maximum pressure range for the F and H style adjuster options, the valve
   may not open to relieve system pressure
.
Temperature: -54° to 107°C (-65°F to 225°F) with standard polyurethane seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC08-2; See page 9.108_2w
Cavity Tool: CT08-2xx; See page 8.600.1
Seal Kit: SK08-2X-B for polyurethane, fluorocarbon or Buna N seals;
   for bi-directional pressure applications use SK08-2X-M (polyurethane); See page 8.650.1

 

 


PERFORMANCE:

RV58-20 Flow vs Pressure

 

DIMENSIONS:

RV58-20 Valve Dimensions

 

MATERIALS:

Cartridge: Weight: 0.23-0.28 kg
(0.50-0.61 lb); depending on adjustment
option. Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Polyurethane
O-rings standard. Anodized aluminum knobs
and caps.

Ported Body: Weight: 0.54 kg (1.20 lb); Ductile Iron (code "D") standard, consult factory for weight, dimensions may differ. Rated to 345 bar (5000 psi). See page 8.008_2w.

Adjustment Option Details:
See page 6.003.1

 

ORDERING CHART:

RV58-20 Ordering Chart


Selection guide - similar valves.
PDF file of this page. STP file for RV58-20 Request a quote.