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Relief valves

Sun Hydraulics offers pressure-limiting and pressure-regulating relief cartridges with a variety of mounting options with 2, 3, or 4 ports.

- Functionally interchangeable (except pilot-only versions) with valves with the same number of ports (same flow path, same cavity for a given frame size)
- Flow rates up to 200 gpm (800 L/min.)
- Versions are available with an integral pilot control cavity that accepts Sun's T-8A pilot pressure controls — electro-proportional or pneumatic
- Fully adjustable up to and including 5000 psi (350 bar) or 6000 psi (420 bar) intermittent, except air-piloted versions
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Modell
Cavity
Nominal capacity
Relief valve
2 ports, pilot operated, balanced piston
Manufacturer: Sun Hydraulics
T-162A
12 gpm (45 lpm)
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, electro-proportional relief valve - pilot capacity
Manufacturer: Sun Hydraulics
T-13A
25 gpm (95 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, direct-acting
Manufacturer: Sun Hydraulics
T-162A
12 gpm (45 lpm)
T-10A
25 gpm (95 lpm)
T-13A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, low-pressure-range, direct-acting
Manufacturer: Sun Hydraulics
T-3A
10 gpm (40 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, non-adjustable direct-acting
Manufacturer: Sun Hydraulics
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, direct-acting, CE marked
Manufacturer: Sun Hydraulics
T-10A
up to 19.8 gpm (75 lpm) see chart
T-3A
up to 20.8 gpm (79 lpm) see chart
Modell
Cavity
Nominal capacity
Relief valve
2 ports, fast-acting, pilot operated, balanced piston
Manufacturer: Sun Hydraulics
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, pilot operated, balanced poppet
Manufacturer: Sun Hydraulics
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, anti Shock, pilot operated, balanced poppet
Manufacturer: Sun Hydraulics
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, direct acting, pilot capacity
Manufacturer: Sun Hydraulics
T-3A
0.5 gpm (2 lpm)
T-10A
0.25 gpm (1 lpm)
T-8A
2.5 gpm (10 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, thermal relief
Manufacturer: Sun Hydraulics
T-162A
0,25 gpm (1 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, thermal relief, flow-thru
Manufacturer: Sun Hydraulics
T-162A
0,25 gpm (1 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, kick-down, pilot operated, balanced piston
Manufacturer: Sun Hydraulics
T-162A
12 gpm (45 lpm)
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, air-controlled, pilot operated, balanced piston
Manufacturer: Sun Hydraulics
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, air-controlled, direct-acting, pilot capacity
Manufacturer: Sun Hydraulics
T-3A
0,5 gpm (2 lpm)
T-8A
2,5 gpm (10 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, ventable, pilot operated, balanced piston
Manufacturer: Sun Hydraulics
T-163A
7.5 gpm (30 lpm)
T-11A
15 gpm (60 lpm)
T-2A
30 gpm (120 lpm)
T-17A
60 gpm (240 lpm)
T-19A
120 gpm (480 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, ventable, pilot operated, balanced poppet
Manufacturer: Sun Hydraulics
T-11A
15 gpm (60 lpm)
T-2A
25 gpm (95 lpm)
T-17A
50 gpm (200 lpm)
T-19A
120 gpm (480 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, anti Shock, ventable, pilot operated, balanced poppet
Manufacturer: Sun Hydraulics
T-2A
30 gpm (120 lpm)
T-17A
60 gpm (240 lpm)
T-19A
120 gpm (480 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, dual, direct-acting relief valve, pilot capacity
Manufacturer: Sun Hydraulics
T-11A
0.25 gpm (1 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, direct-acting - after check
Manufacturer: Sun Hydraulics
T-11A
10 gpm (40 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, direct-acting - before check
Manufacturer: Sun Hydraulics
T-11A
10 gpm (40 lpm)
Modell
Cavity
Nominal capacity
Relief valve
4 ports, ventable, pilot operated, balanced piston - before check
Manufacturer: Sun Hydraulics
T-21A
10 gpm (40 lpm)
Modell
Cavity
Nominal capacity
Relief valve
4 ports, ventable, pilot operated, balanced piston relief main stage with integral T-8A control cavity - before check
Manufacturer: Sun Hydraulics
T-21A
10 gpm (40 lpm)
Modell
Cavity
Nominal capacity
Relief valve
4 ports, ventable, pilot operated, balanced piston, drain to port 4
Manufacturer: Sun Hydraulics
T-21A
15 gpm (60 lpm)
T-22A
30 gpm (120 lpm)
T-23A
60 gpm (240 lpm)
T-24A
120 gpm (480 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, pilot operated, balanced piston relief main stage with integral T-8A control cavity
Manufacturer: Sun Hydraulics
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, pilot operated, balanced poppet relief main stage with integral T-8A control cavity
Manufacturer: Sun Hydraulics
T-10A
25 gpm (95 lpm)
T-3A
50 gpm (200 lpm)
T-16A
100 gpm (380 lpm)
T-18A
200 gpm (760 lpm)
Modell
Cavity
Nominal capacity
Relief valve
4 ports, ventable, pilot operated, balanced piston relief main stage with integral T-8A control cavity and drain to port 4
Manufacturer: Sun Hydraulics
T-21A
15 gpm (60 lpm)
T-22A
30 gpm (120 lpm)
T-23A
60 gpm (240 lpm)
T-24A
120 gpm (480 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, electro-proportional relief valve - pilot capacity
Manufacturer: Sun Hydraulics
T-8A
0.25 gpm (1 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, electro-proportional relief valve - pilot capacity, high pressure setting with no command
Manufacturer: Sun Hydraulics
T-8A
0.25 gpm (1 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, normally closed modulating element valve with relief function
Manufacturer: Sun Hydraulics
T-163A
5 gpm (20 lpm)
T-11A
10 gpm (40 lpm)
T-2A
20 gpm (80 lpm)
T-17A
40 gpm (160 lpm)
T-19A
80 gpm (320 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, pilot operated, balanced piston sequence main stage with integral T-8A control cavity
Manufacturer: Sun Hydraulics
T-11A
15 gpm (60 lpm)
T-2A
30 gpm (120 lpm)
T-17A
60 gpm (240 lpm)
T-19A
120 gpm (480 lpm)
Modell
Cavity
Nominal capacity
Relief valve
3 ports, pilot operated, balanced poppet sequence main stage with integral T-8A control cavity
Manufacturer: Sun Hydraulics
T-11A
15 gpm (60 lpm)
T-2A
30 gpm (120 lpm)
T-17A
60 gpm (240 lpm)
T-19A
120 gpm (480 lpm)
Modell
Cavity
Nominal capacity
Relief valve
2 ports, bi-directional direct-acting relief valve
Manufacturer: Sun Hydraulics
T-3A
50 gpm (200 lpm)