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SUN HYDRAULICS
RSHS8WV


$268.35 USD
  • SUN HYDRAULICS
  • Material:RSHS8WV
  • Model:RSHS-8WV
  • Summary:Cartridge

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***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics RSHS8WV (RSHS8WV) is a sophisticated normally closed poppet valve designed with an integral pilot control cavity, making it a versatile component in hydraulic systems. This valve features a balanced poppet design and is externally drained, allowing for precise pressure regulation by accepting any T8A pressure control cartridge within its pilot control cavity. As the inlet port 1 pressure reaches the set point of the pilot control cartridge, the poppet element begins to open towards port 2, effectively throttling flow and managing pressure levels. Notably, this valve maintains insensitivity to back pressure at port 2 up to its set threshold, making it suitable for replacing traditional two-port relief valves when return line pressure is present. The RSHS8WV's design ensures that all three-port sequence cartridges are interchangeable in terms of flow path and cavity size, promoting ease of integration across different setups. The valve's main stage orifice is safeguarded by a robust 150-micron stainless steel screen, enhancing durability and performance reliability. Additionally, the maximum allowable pressure at port 3 should not exceed 5000 psi (350 bar), as pressures here directly add to the valve setting at a 1:1 ratio. For optimal functionality with the \"8\" control option, proper installation torque must be applied initially to the main stage valve before fitting the T8A pilot control valve. This configuration allows direct incorporation of various pilot control cartridges\u2014sold separately\u2014into the relief cartridge via the T8A cavity, offering options for solenoid, air pilot, or hydraulic pilot operations. Furthermore, this design mitigates common cavitation issues such as noise and manifold erosion due to internal modulation within the cartridge. This model operates efficiently with cross-port relief circuits and incorporates Sun's floating style construction to minimize potential binding from excessive torque or machining variations. With a capacity of 60 gpm (240 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve is engineered for high-performance applications requiring precise hydraulic control.

This valve is a normally closed poppet element that incorporates an integral pilot control cavity. It is externally drained, and is a balanced poppet design. The pilot control cavity will accept any T-8A pressure control cartridge. When the pressure at the inlet (port 1) reaches the pilot control cartridge's setting, the poppet element starts to open to port 2, throttling flow to regulate the pressure. The pilot cartridge's setting determines the difference in pressure between the inlet (port 1) and the drain (port 3). These valves are insensitive to back pressure at port 2, up to the valve setting. They may be used to regulate pressure in place of 2-port relief valves if there is pressure in the return line.

  • All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
  • Pilot flow continues to increase as the pressure at port 1 (inlet), relative to the pressure at port 3 (drain), rises above the valve setting.
  • The main stage orifice is protected by a 150 micron stainless steel screen.
  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
  • NOTE: With the -8 control option, the main stage valve should first be installed to the correct torque value. The T-8A pilot control valve should then be installed into the main stage valve to its required torque value.
  • The -8 control option allows the pilot control valve to be incorporated directly into the end of the relief cartridge via the T-8A cavity. These pilot control cartridges are sold separately and include solenoid operation, air pilot operation, and hydraulic pilot operation. See Pilot Control Cartridges.
  • Because the modulating occurs inside the cartridge these valves are immune to most of the problems associated with cavitation, namely noise and manifold erosion.
  • Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
  • 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.

CavityT-17A
Series3
Capacity60 gpm240 L/min.
Maximum Operating Pressure5000 psi350 bar
Control Pilot Flow15 - 20 in³/min.0,25 - 0,33 L/min.
Response Time - Typical2 ms2 ms
Pilot Control CavityT-8AT-8A
Pilot Control Valve Installation Torque20 - 25 lbf ft27 - 33 Nm
Pilot Control Valve Hex Size7/8 in.22,2 mm
Main stage leakage at reseat10 drops/min.0,7 cc/min.
Valve Hex Size1 1/4 in.31,8 mm
Valve Installation Torque150 - 160 lbf ft203 - 217 Nm
Model Weight1.50 lb0,70 kg
Seal kit - CartridgeViton: 990-217-006

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Notes:
  • Compound cartridge (pilot and main stage) assembly information is provided for reference only. Cartridges must be ordered separately and assembled at point of use.