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Check valve from Sun Hydraulics
This valve is a spring biased closed, pilot-to-close check cartridge that has a 1.8:1 pilot ratio. The valve allows flow from port 1 to port 2 and blocks reverse flow. Pressure at the pilot port opposes pressure at port 1 at a ratio of 1.8:1. This valve is most often used in regeneration circuits.
Note: Data may vary by configuration. See CONFIGURATION section.
| Cavity | T-19A |
| Series | 4 |
| Capacity | 160 gpm |
| Capacity (metric) | 610 L/min. |
| Maximum Operating Pressure | 5000 psi |
| Maximum Operating Pressure (metric) | 350 bar |
| Pilot Ratio | 1.8:1 |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 1 drops/min. |
| Maximum Valve Leakage at 110 SUS (24 cSt) (metric) | 0,07 cc/min. |
| Valve Hex Size | 1 5/8 in. |
| Valve Hex Size (metric) | 41,3 mm |
| Valve Installation Torque | 350 – 375 lbf ft |
| Valve Installation Torque (metric) | 474 – 508 Nm |
| Model Weight | 2.60 lb |
| Model Weight (metric) | 1,20 kg |
| Seal kit – Cartridge | Viton: 990019006 |
Control
| X | Standard Pilot |
Cracking Pressure
| A | 4 psi (0,3 bar) |
| B | 15 psi (1 bar) |
| C | 30 psi (2 bar) |
| D | 50 psi (3,5 bar) |
| E | 75 psi (5 bar) |
| F | 100 psi (7 bar) |
| G | 150 psi (10,5 bar) |
| Z | 1 psi (0,07 bar) |
Seal Material
| N | Buna-N |
| V | Viton |
| E | EPDM |
Material/Coating
| /AP | Stainless Steel, Passivated |
| /LH | Mild Steel, Zinc-Nickel |
