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SUN HYDRAULICS
PRDNXDV2B12V


$558.90 USD

Tags:

  • SUN HYDRAULICS
  • Material:PRDNXDV2B12V
  • Model:PRDN-XDV@2B12V
  • 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 PRDNXDV2B12V (PRDNXDV2B12V) is an electroproportional, direct-acting reducer-reliever valve designed to efficiently manage hydraulic pressure in various systems. This valve reduces a high primary pressure at inlet port 2 to a constant reduced pressure at port 1 while offering a full flow relief function from port 1 to tank port 3. It is biased towards the reducing mode, linking port 2 to port 1 at a customer-specified pressure setting. The valve's operation is highly responsive; increasing the current to the coil proportionally decreases the reduced pressure at port 1. If the pressure at port 1 surpasses the coil-induced setting, it is relieved to port 3. The valve ensures minimal oil consumption due to its closed transition between reducing and relieving modes. For optimal performance, it is recommended to use an amplifier with current sensing and adjustable dither between 100-250 Hz. The valve's interchangeable coils can be mounted in either direction on the solenoid tube, providing flexibility in installation. Notably suitable for accumulator circuits, this valve minimizes secondary circuit leakage by eliminating pilot control flow. Its direct-acting design supports reliable operation even in contaminated systems and dead-headed conditions. The PRDNXDV2B12V features a maximum operating pressure of 5000 psi (350 bar) and a capacity of up to 5 gpm (20 L/min). It incorporates Sun's floating style construction, which reduces the risk of internal part binding from excessive torque or machining variations during installation. Additionally, all three-port pressure-reducing and reducing-relieving cartridges are physically interchangeable within their frame size, allowing for versatile mounting configurations with full capacity return line usage when necessary.

This electro-proportional, direct-acting reducer/reliever 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 valve is biased to the reducing mode, connecting port 2 to port 1 at a customer specified pressure setting. Increasing the current to the coil will proportionally decrease the reduced pressure at port 1. If pressure at port 1 exceeds the setting induced by the coil, pressure at port 1 is relieved to port 3. This valve is closed in the transition between reducing and relieving resulting in very low consumption of oil.

  • 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).
  • Leakage specified in Technical Data is out of port 3 with a supply pressure of 2000 psi (140 bar) and the valve set at mid range. This leakage is directly proportional to pressure differential and inversely proportional to viscosity expressed in centistokes.
  • The transition from reducing to relieving is closed. The result is very low leakage. However, there is a transitional step increase in pressure between reducing and relieving modes. This step equals about 5% of the high end of the adjustment range, independent of the valve setting.
  • For optimum performance, an amplifier with current sensing and adjustable dither should be used. Dither should be adjustable between 100 - 250 Hz.
  • Coils are interchangeable with Sun's other full flow, solenoid-operated valves and can be mounted on the tube in either direction.
  • With no electrical signal, the reduced pressure setting will default to the customer specified value. Increasing the command to the coil will proportionally reduce the secondary pressure value.
  • Suitable for accumulator circuits since the absence of pilot control flow results in reduced secondary circuit leakage.
  • Direct acting concept provides highly reliable operation in contaminated systems, especially at dead headed conditions.
  • 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.
  • 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-11A
Series1
Capacity5 gpm20 L/min.
Maximum Operating Pressure5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt)2.5 in³/min.41 cc/min.
Solenoid Tube Diameter.75 in.19 mm
Valve Hex Size7/8 in.22,2 mm
Valve Installation Torque30 - 35 lbf ft41 - 47 Nm
Model Weight (with coil)1.20 lb0,55 kg
Seal kit - CartridgeViton: 990-511-006
Seal and nut kit - CoilViton: 990-770-006Viton: 990-770-006

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