Created on 03/09/2016

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MODEL

DKFD

Normally closed, balanced poppet, logic element - vent-to-open

SERIES 2 / CAPACITY: 120 L/min. / CAVITY: T-2A

This is a normally closed, balanced poppet, switching element. When the external vent port is blocked, the poppet

remains in the closed position. Venting the external port shifts it to the open position, provided there is sufficient

pressure at port 3.

TECHNICAL DATA

Minimum Pilot Pressure Required to Shift Valve 20 bar

Maximum Operating Pressure 350 bar

Control Pilot Flow See Performance Data

Maximum Valve Leakage at 110 SUS (24 cSt) 0,7 cc/min.@350 bar

Pilot Volume Displacement 0,33 cc

Seal kit - Cartridge Buna: 990-202-007

Seal kit - Cartridge Polyurethane: 990-002-002

Seal kit - Cartridge Viton: 990-202-006

(E)CONTROL

E External 4-SAE Drain Port

(H)MINIMUM PILOT PRESSURE

H 300 psi (20 bar)

(N)SEAL MATERIAL

N Buna-N

V Viton

snhy.com/

DKFD

TECHNICAL FEATURES

Unique balanced construction provides predictable switching with 5000 psi (350 bar) at port 1 and port 2, with the external drain port open and a minimum pilot

pressure of 300 psi (20 bar).

The external -4 SAE vent port may be directly connected to a pilot switching valve. The pilot valve should have a leakage rate of less than 10 drops/min (0,7

cc/min). and be able to satisfy the pilot flow requirements. Sun model DAA*-*** solenoid pilot valve is ideal for this application.

Leakage rate between port 1 and port 2 is very low, typically less than 10 drops/min. at 5000 psi (0,7 cc/min at 350 bar).

Valve will reseat when the pilot pressure falls below 145 psi (10 bar).

Port 1 and port 2 are fully sealed from port 3.

All ports will accept 5000 psi (350 bar).

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

Model Code Example: DKFDEHNCONFIGURATION OPTIONS