PRESSURE CONTROLS

RV10-26 Relief, Pilot-Operated Spool

DESCRIPTION

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 RV10-26 blocks ﬂ ow from ➀ to ➁ until sufﬁ cient pressure is present at ➀ to force

the piloting relief off its seat, allowing the main (second stage) spool to shift, opening

➀ to ➁.

The cartridge offers smooth transition in response to load changes in demanding

hydraulic circuits.

NOTE: The RV10-26 cannot be used in crossover relief applications.

FEATURES

• Adjustments cannot be backed out of the valve.

• Adjustments prohibit springs from going solid.

• Hardened spool and cage for long life.

• Optional spring ranges to 210 bar (3000 psi).

• Fast, smooth response to pressure surges.

• Industry common cavity.

RATINGS

Operating Pressure: 240 bar (3500 psi)

Flow: The Performance Chart illustrates ﬂ ow handling capacity at maximum setting

for each spring range option. Pressure rise will vary with spring (range) and

with setting within range due to ﬂ ow forces. Consult factory for speciﬁ c ﬂ ow

characteristic values.

Internal Leakage: 115 cc/minute (7 cu. in./minute) max. to 85% of nominal setting

Crack Pressure Deﬁ ned: bar (psi) evident at 7.6 lpm (2.0 gpm) attained

Reseat Pressure: Nominal 90% of crack pressure

Standard Spring Ranges:

6.9 to 27.6 bar (100 to 400 psi);

10.3 to 103.4 bar (150 to 1500 psi);

27.6 to 206.9 bar (400 to 3000 psi)

Temperature: -40 to 120°C

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: VC10-2; See page 9.110.1

Cavity Tool: CT10-2XX; See page 8.600.1

Seal Kit: SK10-2N-B; See page 8.650.1

USASI/ISO:

SYMBOLS

PERFORMANCE (Cartridge Only)

6.150.1

276/4000

207/3000

138/2000

70/1000

37.9

75.8

FLOW RATE lpm/gpm

PRESSURE RISE bar/psi

113.6

Flow Characteristic ~ to 

32 cSt/150 sus oil at 40nC

HYDRAFORCE

.com

Blue rectangles are links to other catalog pages.

Adjustment Option

1/4 in. Hex Allen Head A

1-1/2 in. Dia. Alum. Knob B

Option A w/ Cover Cap C

Factory Preset Non-Adj. F

Factory Preset

Hidden Adjustment H

Option C with

Lockwire Holes L

DIMENSIONS

MATERIALS

Cartridge: Weight: 0.25 kg. (0.55 lbs.)

Steel with hardened work surfaces.

Zinc-plated exposed surfaces.

Buna N O-rings and polyester

elastomer back-ups standard.

Anodized aluminum knobs.

Optional polyurethane seals

with Fluorocarbon back-up

recommended for pressures

over 240 bar (3500 psi).

Standard Ported Body: Weight:

0.16 kg. (0.35 lbs.) Anodized high-

strength 6061 T6 aluminum alloy,

rated to 207 bar (3000 psi). Ductile

iron bodies available; dimensions

may differ. See page 8.010.1.

TO ORDER

RV10-26__ - __ __ __ - __ - __ __ / __ __ __ __

Porting

Cartridge Only 0

SAE 6 6T

SAE 8 8T

3/8 in. BSP* 3B

1/2 in. BSP* 4B

*BSP Body; U.K. Mfr. Only

†

Adjustable valves will be

preset to approx. 50% of

spring max. potential.

RV10-26

6.150.2

Spring Range

4 6.9 to 27.6 bar

(100 to 400 psi)

15 10.3 to 103.4 bar

(150 to 1500 psi)

30 27.6 to 206.9 bar

(400 to 3000 psi)

Setting in bar

†

(Blank) for Adjustable, or

Specify, for example:

M25 25 bar

M100 100 bar

Setting in psi

†

(Blank) for Adjustable, or

Specify, for example:

9.0 900 psi

23.5 2350 psi

HYDRAFORCE

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Seals

Pressure on

P Only:

N Buna N (Std.)

V Fluorocarbon

Blue rectangles are links to other catalog pages.