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Load holding valve from Sun Hydraulics.
This valve is a pilot to open check valve with a bypass orifice. It incorporates a sealed pilot, a steel seat, and is non-vented. It allows free flow from the valve (port 2) to the load (port 1) and restricts flow in the opposite direction. Pressure at the pilot (port 3) will open the valve from port 1 to port 2. The pilot pressure needed at port 3 to open the valve is directly proportional to the load pressure at port 1. Pressure at port 2 directly opposes the pilot pressure. Note: The bypass orifice diameter is specified by the customer. See Technical Data below for the allowable orifice range.
Note: Data may vary by configuration. See CONFIGURATION section.
| Cavity | T-2A |
| Series | 2 |
| Capacity | 30 gpm |
| Capacity (metric) | 120 L/min. |
| Maximum Operating Pressure | 5000 psi |
| Maximum Operating Pressure (metric) | 350 bar |
| Pilot Ratio | 3:1 |
| Orifice Range | .016 – .135 in. |
| Orifice Range (metric) | 0,4 – 3,4 mm |
| Valve Hex Size | 1 1/8 in. |
| Valve Hex Size (metric) | 28,6 mm |
| Valve Installation Torque | 45 – 50 lbf ft |
| Valve Installation Torque (metric) | 61 – 68 Nm |
| Model Weight | 0.53 lb. |
| Model Weight (metric) | 0.24 kg. |
| Seal kit – Cartridge | Viton: 990202006 |
Control
| X | Not Adjustable |
Setting Range
| A | 4 psi (0,3 bar) Cracking Pressure, .016 – .135 in. (0,4 – 3,4 mm) |
| B | 15 psi (1 bar) Cracking Pressure, .016 – .135 in. (0,4 – 3,4 mm) |
| C | 30 psi (2 bar) Cracking Pressure, .016 – .135 in. (0,4 – 3,4 mm) |
| D | 50 psi (3,5 bar) Cracking Pressure, .016 – .135 in. (0,4 – 3,4 mm) |
| E | 75 psi (5 bar) Cracking Pressure, .016 – .135 in. (0,4 – 3,4 mm) |
| F | 100 psi (7 bar) Cracking Pressure, .016 – .135 in. (0,4 – 3,4 mm) |
| Z | 1 psi (0,07 bar) Cracking Pressure, .016 – .135 in. (0,4 – 3,4 mm) |
Seal Material
| N | Buna-N |
| V | Viton |
