Products >> Hydraulic Valve >> SUN Hydraulic Valve

SUN Solenoid Valve

Product No.：DMDA-XNN
Brand：SUN
Place of Origin：USA
Online Inquiry

Product description：
Balanced load control valves combine a balanced modulating element with a reverse flow check. The check valve allows free flow from the directional valve (port 2) to the load (port 1) while the pilot to open modulating element controls flow from port 1 to port 2. Pilot pressure at port 3 determines the flow setting.
This valve has no relief function. Not even thermal expansion relief.
Maximum valve leakage at reseat for I, K, M ranges is 5 drops/min. (0,3 cc/min.) at 200 psi (14 bar) below cracking pressure; E and G ranges is 3 cubic in/min. (50 cc/min.) at 50 psi (3,5 bar) below cracking pressure; H range is 3 cubic in/min. (50 cc/min.) at 75 psi (5 bar) below cracking pressure.
E, G, H ranges are not meant for zero leak type applications.
This valve is balanced against load pressures and therefore exhibits self-compensation. Flow is controlled by the pilot pressure. Because of dynamic seals, performance is best in the meter out mode with port 1 being the load and port 2 being tank.
Backpressure at port 2 directly opposes pilot pressure at port 3.
This valve is a physical replacement for a counterbalance valve but probably won't work well in a cross-piloted cylinder application. A low pilot ratio is needed for machine stability and a balanced load control has an infinitely high pilot ratio.
Applications that use a separate pressure source to the pilot have been successful in providing smooth and stable load control.
All 3-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size).
Sun load control and counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit.
This valve has positive seals between all ports.
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.

Cavity	T-11A
Series	1
Capacity	45 L/min.
Maximum Operating Pressure	350 bar
Maximum Valve Leakage at 110 SUS (24 cSt)	80 cc/min.@210 bar
Manual Override Force Requirement	33 N/100 bar @ Port 1
Manual Override Stroke	2,5 mm
Response Time - Typical	50 ms
Switching Frequency	15,000 max. cycles/hr
Solenoid Tube Diameter	19 mm
Valve Hex Size	22,2 mm
Valve Installation Torque	41 - 47 Nm
Model Weight	0.34 kg.
Seal and nut kit - Coil Viton	990770006
Seal kit - Cartridge Buna	990411007
Seal kit - Cartridge EPDM	990411014
Seal kit - Cartridge Viton	990411006

Product features：

Maximum design flexibility with consistent port usage, as well as optimized port connection areas
A minimum number of jacks are used to match 2-,3-,4-, and 6-port cartridge valves, thus reducing the need for jack tools
7 cartridge valve sizes enable flow rates ranging from 0.25 gpm (1 L/min.) to 300 gpm (1100 L/min.)
High operating pressure: All functional valves can withstand 5000 psi (350 bar)
Cartridge valve types are interchangeable without affecting equipment performance

Product description：

DMDA-XNN
Flow(D)	Control(X)	Spool Configuration(N)	Seal Material(N)	Coil
D 40 L/ min	M： Manual Override	A： Normally Open 1 to 2,Closed 2 to 3	N：Buna-N	No Coil
	X： No Manual Override	N： Normally Open 2 to 3,Closed 1 to 2	V：Viton	212 DIN 43650-Form A, 12 VDC
				224 DIN 43650-Form A, 24 VDC
				912 Deutsch DT04-2P, 12 VDC
				924 Deutsch DT04-2P, 24 VDC