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SUN HYDRAULICS
RED-REL CART
PPHB8WN


$274.30 USD

Tags:

  • SUN HYDRAULICS
  • Material:PPHB8WN
  • Model:PPHB-8WN
  • Summary:Cartridge

Quantity in stock: 1

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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 PPHB8WN (PPHB8WN) is a 3-way, normally open modulating valve designed for precise pressure control applications. This valve features an integral pilot control cavity compatible with any T8A pressure control cartridge, allowing it to reduce high primary pressure at inlet port 2 to a consistent reduced pressure at port 1. It also provides a full flow relief function from port 1 to the tank port 3. The pilot cartridge setting determines the differential pressure between reduced pressure port 1 and tank port 3, with a maximum allowable pressure of 3000 psi at port 3. The valve's maximum inlet pressure is dictated by its bias spring, with the D spring tested up to a maximum differential of 2000 psi and the W spring supporting up to 5000 psi inlet pressure. This valve incorporates Sun's floating style construction to minimize internal binding due to excessive installation torque or cavity machining variations. It exhibits low deadband transitions between reducing and relieving modes and offers stable performance with low hysteresis due to its exceptionally flat pressure-flow characteristics. For configurations requiring reverse flow from reduced pressure port 1 to inlet port 2, it is advisable to include an additional check valve in the circuit as the main spool may close under such conditions. The PPHB8WN model allows for direct incorporation of pilot control valves through its T8A cavity, accommodating various operation modes like electroproportional, solenoid, air pilot, and hydraulic pilot controls\u2014sold separately. With a capacity of up to 40 gpm (160 L/min) and maximum operating pressures reaching 5000 psi (350 bar), this versatile valve is suitable for demanding hydraulic systems requiring precise modulation and reliable performance.

This valve is a 3-way, normally open modulating element that incorporates an integral pilot control cavity. The pilot control cavity will accept any T-8A pressure control cartridge. The valve reduces a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full flow relief function from port 1 to tank (port 3). The pilot cartridge's setting determines the difference in pressure between reduced pressure (port 1) and the tank (port 3).

  • Maximum pressure at port 3 should be limited to 3000 psi (210 bar).
  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar).
  • Maximum inlet pressure is determined by the bias spring. The D spring is tested with 2000 psi (140 bar) maximum differential pressure and the W spring is tested with 5000 psi (350 bar) maximum inlet pressure.
  • 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 electro-proportional, solenoid, air pilot, and hydraulic pilot operation. See Pilot Control Cartridges.
  • Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a separate check valve to the circuit.
  • Pilot operated valves exhibit very low dead-band transition between reducing and relieving modes.
  • Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
  • All three-port pressure reducing and reducing/relieving cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size). When considering mounting configurations, it is sometimes recommended that a full capacity return line (port 3) be used with reducing/relieving cartridges.
  • 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
Capacity40 gpm160 L/min.
Maximum Operating Pressure5000 psi350 bar
Control Pilot Flow15 - 20 in³/min.0,25 - 0,33 L/min.
Pilot Control CavityT-8AT-8A
Valve Hex Size1 1/4 in.31,8 mm
Valve Installation Torque150 - 160 lbf ft203 - 217 Nm
Model Weight1.30 lb0,60 kg
Seal kit - CartridgeViton: 990-017-006

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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.