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Sequence valve from Sun Hydraulics
Pilot-operated, balanced poppet sequence valves will supply a secondary circuit with flow once the pressure at the inlet (port 1) has exceeded the valve setting. The pressure setting of a sequence valve controls the pressure at port 1 relative to the pressure at the drain (port 3). These valves are insensitive to back pressure at port 2 (sequence), up to the valve setting. They may be used to regulate pressure in place of 2-port relief valves if there is pressure in the return line.
Note: Data may vary by configuration. See CONFIGURATION section.
| Cavity | T-19A |
| Series | 4 |
| Capacity | 120 gpm |
| Capacity (metric) | 480 L/min. |
| Maximum Operating Pressure | 5000 psi |
| Maximum Operating Pressure (metric) | 350 bar |
| Factory Pressure Settings Established at | 4 gpm |
| Factory Pressure Settings Established at (metric) | 15 L/min. |
| Control Pilot Flow | 15 – 20 in³/min. |
| Control Pilot Flow (metric) | 0,25 – 0,33 L/min. |
| Maximum Valve Leakage at Reseat | 10 drops/min. |
| Maximum Valve Leakage at Reseat (metric) | 0,7 cc/min. |
| Response Time – Typical | 2 ms |
| Adjustment – No. of CW Turns from Min. to Max. setting | 5 |
| 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 |
| Adjustment Screw Internal Hex Size | 5/32 in. |
| Adjustment Screw Internal Hex Size (metric) | 4 mm |
| Locknut Hex Size | 9/16 in. |
| Locknut Hex Size (metric) | 15 mm |
| Locknut Torque | 80 – 90 lbf in. |
| Locknut Torque (metric) | 9 – 10 Nm |
| Model Weight | 3.15 lb. |
| Model Weight (metric) | 1.43 kg. |
| Seal kit – Cartridge | Viton: 990219006 |
Control
| C | Tamper Resistant – Factory Set |
| K | Handknob |
| L | Standard Screw Adjustment |
Adjustment Range
| A | 100 – 3000 psi (7 – 210 bar), 1000 psi (70 bar) Standard Setting |
| B | 50 – 1500 psi (3,5 – 105 bar), 1000 psi (70 bar) Standard Setting |
| C | 150 – 6000 psi (10,5 – 420 bar), 1000 psi (70 bar) Standard Setting |
| N | 60 – 800 psi (4 – 55 bar), 400 psi (28 bar) Standard Setting |
| Q | 60 – 400 psi (4 – 28 bar), 200 psi (14 bar) Standard Setting |
| W | 150 – 4500 psi (10,5 – 315 bar), 1000 psi (70 bar) Standard Setting |
Seal Material
| N | Buna-N |
| V | Viton |
Material/Coating
| /AP | Stainless Steel, Passivated |
| /LH | Mild Steel, Zinc-Nickel |
