 2019 Sun Hydraulics 1 of 2

MODEL

DPBN

2-way, pilot-operated, directional valve with drain to port 4 - normally closed

SERIES 1 / CAPACITY: 28 L/min. / CAVITY: T-21A

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

Normally closed, pilot-operated, 2-way directional cartridges are switching devices typically used in moderate-flow

circuits. They can be used by themselves or to actuate larger pilot-operated directional cartridges or logic

cartridges. The valve shifts when the pressure differential between port 1 and port 4 exceeds the setting.

TECHNICAL DATA

Cavity T-21A

Series 1

Capacity 28 L/min.

Factory Pressure Settings Established at 15 L/min.

Maximum Operating Pressure 350 bar

Control Pilot Flow 0,11 - 0,16 L/min.

Maximum Valve Leakage at 110 SUS (24 cSt) 15 cc/min.@70 bar

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: 990021007

Seal kit - Cartridge Polyurethane: 990021002

Seal kit - Cartridge Viton: 990021006

Model Weight 0.19 kg.

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DPBN

 2019 Sun Hydraulics 2 of 2

(L)CONTROL

L Standard Screw Adjustment

C Tamper Resistant - Factory Set

K Handknob

(A)ADJUSTMENT RANGE

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

(70 bar) Standard Setting

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

(70 bar) Standard Setting

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

bar) Standard Setting

E 25 - 400 psi (1,7 - 28 bar), 200 psi (14

bar) Standard Setting

J 25 - 1500 psi (1,7 - 105 bar), 1000 psi

(70 bar) Standard Setting

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

psi (70 bar) Standard Setting

(N)SEAL MATERIAL

N Buna-N

V Viton

TECHNICAL FEATURES

Port 4 can be blocked to prevent the valve from shifting.

Port 3 can be used as a work port.

Direct-acting and pilot-operated versions of these valves are interchangeable. They fit the same cavities and have the same flow paths.

Pressure at port 4 is directly additive to the setting of the valve.

This valve is not bistable; it is capable of modulating between the two positions shown.

Maximum pressure at port 3 should be limited to 3000 psi (210 bar). This is due to fatigue strength limits not hydraulic operating limits.

When pilot pressure exceeds the valve setting, pilot flow may be a consideration. See performance curves for pilot consumption vs. load pressure above the valve

setting. If this is a problem, the direct acting version of this valve would be a solution.

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

Model Code Example: DPBNLANCONFIGURATION OPTIONS