 2020 Sun Hydraulics 1 of 2

MODEL

RPEC

Pilot-operated, balanced piston relief valve

SERIES 1 / CAPACITY: 95 L/min. / CAVITY: T-10A

CONFIGURATION

L Control Standard Screw Adjustment

D Adjustment

Range

25 - 800 psi (1,7 - 55 bar), 400

psi (28 bar) Standard Setting

N Seal Material Buna-N

(none) Material/Coating Standard Material/Coating

NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.

Pilot-operated, balanced-piston relief cartridges are normally closed pressure regulating valves. When the pressure

at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to regulate the

pressure. These valves are accurate, have low pressure rise vs. flow, they are smooth and quiet, and are

moderately fast.

TECHNICAL DATA

Cavity T-10A

Series 1

Capacity 95 L/min.

Factory Pressure Settings Established at 15 L/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 30 cc/min.@70 bar

Response Time - Typical 10 ms

Adjustment - No. of CW Turns from Min. to Max. setting 5

Valve Hex Size 22,2 mm

Valve Installation Torque 41 - 47 Nm

Adjustment Screw Internal Hex Size 4 mm

Locknut Hex Size 15 mm

Locknut Torque 9 - 10 Nm

Seal kit - Cartridge Buna: 990010007

Seal kit - Cartridge EPDM: 990010014

Seal kit - Cartridge Polyurethane: 990010002

Seal kit - Cartridge Viton: 990010006

Model Weight 0.14 kg.

sunhydraulics.com/model/

RPEC

For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.

NOTES

 2020 Sun Hydraulics 2 of 2

(L)CONTROL

L Standard Screw Adjustment

C Tamper Resistant - Factory Set

K Handknob

O Handknob with Panel Mount

W Hex Wrench Adjustment

Y Tri-Grip Handknob

(D)ADJUSTMENT RANGE

D 25 - 800 psi (1,7 - 55 bar), 400 psi (28

bar) Standard Setting

A 100 - 3000 psi (7 - 210 bar), 1000 psi

(70 bar) Standard Setting

W 150 - 4500 psi (10,5 - 315 bar), 1000

psi (70 bar) Standard Setting

B 50 - 1500 psi (3,5 - 105 bar), 1000 psi

(70 bar) Standard Setting

C 150 - 6000 psi (10,5 - 420 bar), 1000

psi (70 bar) Standard Setting

N 60 - 800 psi (4 - 55 bar), 400 psi (28

bar) Standard Setting

Q 60 - 400 psi (4 - 28 bar), 200 psi (14

bar) Standard Setting

(N)SEAL MATERIAL

N Buna-N

E EPDM

V Viton

MATERIAL/COATING

Standard Material/Coating

/AP Stainless Steel, Passivated

/LH Mild Steel, Zinc-Nickel

TECHNICAL FEATURES

All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).

Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage

the seals.

Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage.

Main stage orifice is protected by a 150-micron stainless steel screen.

Not suitable for use in load holding applications due to spool leakage.

Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.

W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full

range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.

Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel

components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of

Construction page located under TECH RESOURCES.

Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge

machining variations.

PERFORMANCE CURVES

RELATED MODELS

RPEC8 Pilot-operated, balanced piston relief main stage with integral T-8A control cavity

Model Code Example: RPECLDNCONFIGURATION OPTIONS