Loading...
Ventable, pilot-operated, balanced poppet relief valve
Cavity: T-11A | Capacity:
Technical specifications
Ventable, pilot-operated, balanced-poppet relief cartridges are normally closed pressure regulating valves. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to regulate the pressure. They provide a vent port (port 3) that connects between the main piston and pilot stage to provide for remote control by other pilot or 2-way valves. These valves are accurate, have low pressure rise vs. flow, they are smooth and quiet, and are moderately fast.
- Because the modulating occurs inside the cartridge, these valves are immune to most of the problems associated with cavitation, namely noise and manifold erosion.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- A remote pilot relief on port 3 (vent) will control the valve below its own setting.
- Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
- Main stage orifice is protected by a 150-micron stainless steel screen.
- Suitable for use in load holding applications.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- 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
- Series
- Capacity15 gpm
- Maximum Operating Pressure5000 psi
- Control Pilot Flow7 - 10 in³/min.
- Factory Pressure Settings Established at4 gpm
- Maximum Valve Leakage at Reseat10 drops/min.
- Response Time - Typical2 ms
- Adjustment - No. of CW Turns from Min. to Max. setting5
- Valve Hex Size7/8 in.
- Valve Installation Torque30 - 35 lbf ft
- Adjustment Screw Internal Hex Size5/32 in.
- Locknut Hex Size9/16 in.
- Locknut Torque80 - 90 lbf in.
- Model Weight.35 lb
- Seal kit - Cartridge
- Seal kit - Cartridge
Model CAD Files
Symbol CAD Files
What parts of the Sun cartridge valve are field serviceable?
What are the tolerances on pressure settings for Sun's pressure control valves?
Where would I use a kick-down relief?
Can I use a kick-down relief for my system relief?
How big is a drop of hydraulic oil?
Direct acting or pilot operated - what do I use?
Highlights
Technical Tips
Technical Information