Created on 11/04/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
DKFP
Normally closed, balanced poppet, logic element - pressure adjustable
SERIES 2 / CAPACITY: 120 L/min. / CAVITY: T-22A
This is a normally closed, balanced poppet, switching element. When pilot pressure is applied to port 3, the poppet
remains closed until the pilot pressure reaches the setting established by the integral pilot relief stage, at which
point the poppet shifts to the open position.
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
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-022-007
Seal kit - Cartridge Polyurethane: 990-022-002
Seal kit - Cartridge Viton: 990-022-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
(A)ADJUSTMENT RANGE
A 250 - 3000 psi (18 - 210 bar), 1000 psi
(70 bar) Standard Setting
B 250 - 1500 psi (18 - 105 bar), 1000 psi
(70 bar) Standard Setting
W 250 - 4500 psi (18 - 315 bar), 1000 psi
(70 bar) Standard Setting
(N)SEAL MATERIAL
N Buna-N
V Viton
snhy.com/
DKFP
TECHNICAL FEATURES
Unique balanced construction provides predictable switching with 5000 psi (350 bar) at both port 1 and port 2. When the remote pressure signal at port 3 exceeds
the internal valve setting, the valve shifts to the open position.
Any backpressure at the drain port is directly additive to the valve setting.
Valve will reseat when the pilot pressure falls to 85% of the cracking value.
Port 1 and port 2 are fully sealed from port 3 and port 4. Ports 3 and 4 are positively sealed.
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).
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
machining variations.
PERFORMANCE CURVES
Model Code Example: DKFPLANCONFIGURATION OPTIONS
Created on 11/04/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2