Valves - Pressure Controls - Relief Valve - Piloted - Spool Type

RV10-26

PILOT OPERATED RELIEF VALVE U.S. PATENT # 7,137,406

Overview

Description

RV10-26X is a screw in, cartridge style, pilot operated (two stage), spool type hydraulic relief valve, intended for use as a pressure limiting device in demanding hydraulic circuits which require fast response and low hysteresis

Operation

The RV10-26X blocks flow from port 1 to port 2 until sufficient pressure is present at port 1 to force the piloting relief off its seat, allowing the main (second stage) spool to shift, opening port 1 to port 2

note: this valve cannot be used in cross-over relief applications

Features

  • Adjustments cannot be backed out of the valve.
  • Adjustment options A, B and C: positive stops prevent springs from going solid.
  • Hardened spool and cage for long life.
  • Optional spring ranges to 207 bar (3000 psi).
  • Fast, smooth response to pressure surges.
  • Industry common cavity.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Proof pressure:
  • 517.1 bar (7500 psi)
Burst pressure:
  • 1037.7 bar (15000 psi)
Relief pressure defined:
  • Pressure evident at
  • 7.57 lpm (2 gpm)
Reseat pressure:
  • Nominal 90% of crack
Relief pressure range:
  • 6.9 to 206.8 bar (100 to 3000 psi) From zero to maximum control current
Flow Ratings
Flow rating:
  • 113.6 lpm (30 gpm) At max pressure
Maximum internal leakage:
  • 114.7 ml/min (7 in³/min) At port 2 at 85% of crack pressure. Pressure setting below 137.9 bar (2000 psi)
  • 491.6 ml/min (30 in³/min) At port 2 at 85% of crack pressure. Pressure setting above 137.9 bar (2000 psi)
Temperature Ratings
Operating fluid temperature:
  • -40 to 100 °C (-40 to 212 °F) With buna N seals
  • -26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
  • -54 to 107 °C (-65 to 225 °F) With polyurethane and urethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 70 °C (-40 to 160 °F)
Other Ratings
Corrosion protection:
  • Grv10-26x 960 hour salt spray per ASTM b117 cartridge weight
Fluids:
  • Mineral based or synthetic with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.25 kg (0.55 lb) A
  • 0.27 kg (0.60 lb) B
  • 0.29 kg (0.65 lb) C l
  • 0.24 kg (0.53 lb) F h
Internal wetted surface area:
  • 141 cm² (21.8 in²) A b c l
  • 161 cm² (24.9 in²) F h
RV10-26_Flow-Pressure
RV10-26_Dim

Materials

Cartridge: Weight: with Adjustment Option A: 0.25 kg. (0.55 lb.) B: 0.27 kg. (0.60 lb.) C,L: 0.29 kg. (0.65 lb.) F,H: 0.24 kg. (0.53 lb.) Steel with hardened work surfaces. Zinc-plated exposed surfaces. Buna N seals standard. Anodized aluminum knobs. Optional polyurethane seals recommended for pressures over 240 bar (3500 psi).

Ported Body: Weight: 0.16 kg. (0.35 lbs.) Anodized high-strength aluminum alloy, rated to 207 bar (3000 psi). Ductile iron bodies available; dimensions may differ.

Cavity:
Cartridge installation torque:
  • 33.9 to 36.7 N-m (25 to 27 ft-lb)
  • 66.7 N-m (50 ft-lb) Maximum allowable
Adjuster cap torque:
  • 32.5 to 35.3 N-m (24 to 26 ft-lb) H-style plug
Orientation restriction:
  • None
Seal kit:
  • SK10-2X-B X = n, v, P
  • SK10-2X-M X = NC, VC
  • SK10-2X-O X = U
RV10-26_Order
POSITION
CODE
DESCRIPTION
RV10-26F-H-J-R/S
F
Adjustment Option
F
A
1/4" Hex Allen Head
F
B
1-1/2" Diameter Aluminum Knob with Aluminum Lock Knob
F
C
1/4" Hex Allen Head with Cover Cap
F
F
Factory Preset Non-Adjustable
F
H
Factory Preset Hidden Adjustment
F
L
1/4" Hex Allen Head with Cover Cap and Lockwire Holes
H
Line Body
H
0
No Body
H
6T
Aluminum SAE 6
H
8T
Aluminum SAE 8
H
6TD
Ductile Iron SAE 6
H
8TD
Ductile Iron SAE 8
H
2B
Aluminum BSPP 1/4" (2)
H
3B
Aluminum BSPP 3/8" (3)
H
4B
Aluminum BSPP 1/2" (4)
H
4BD
Ductile Iron BSPP 1/2" (4)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
04
6.9 to 27.6 bar (100 to 400 psi) Spring Range
R
15
10.3 to 103.4 bar (150 to 1500 psi) Spring Range
R
30
27.6 to 206.8 bar (400 to 3000 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)