2-vías , pilot-shifted, proporcional estrangulación con con drenaje
![FKHB : 2-vías , pilot-shifted, proporcional estrangulación con con drenaje](https://cmsimages.sunhydraulics.com/cartg_fkhb.gif)
This valve is a 2-way, 2-position proportional throttle. Ports 2 and 3 are normally closed. Pilot pressure at port 1 creates a metering orifice between port 2 and 3 that is proportional to the pressure at 1. The force balance of the flow forces, spring and pilot pressure results in a degree of partial self-compensation as the load pressure changes.
This valve includes a bleed-down feature which connects ports 3 to 4 in the spring-biased position. The bleed-down feature is useful when the valve is used as a meter-in flow control in circuits which include counterbalance valves downstream of port 3. The bleed-down connection is closed as the valve is piloted with increasing pressure at port 1.
Pressure at port 4 directly opposes pressure at port 1.
- These valves may be pressure compensated by an external, modulating, logic element. Use LR_C-XHN for a bypass circuit or LP_C-XHN for a restrictive circuit.
- The valve provides a degree of self-compensation and may be used as a flow control. To increase the accuracy of flow control, an external, modulating, logic element can be used to maintain a constant flow over a wider range of flows and pressures. See performance curves for additional information.
- Ports 1 and 4 should be limited to 500 psi (35 bar).
- Pressure at port 4 directly opposes pressure at port 1.
- An optional tuning adjustment (L control) is offered to vary the pilot pressure required to control flow. The tuning adjustment provides a means to manually increase or decrease flow at a given pilot pressure. The adjustment range is 20 - 200 psi (1,4 - 14 bar), 100 psi (7 bar) Standard Setting.
- 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.
- Accurate pressure compensated control requires that a constant pressure differential be maintained across the valve.
- 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.
cavidad | T-24A |
Series | 4 |
Capacity | 40 gpm160 L/min. |
Maximum Operating Pressure | 5000 psi350 bar |
Maximum Valve Leakage at 110 SUS (24 cSt) | 6 in³/min.@1000 psi98 cc/min.@70 bar |
Pilot Volume Displacement | .20 in³3,3 cc |
Minimum Pilot Pressure to Operate | 100 psi7 bar |
orificio de desvió | .03 in.0,8 mm |
Hysteresis | ± 2 %± 2 % |
Adjustment - No. of CW Turns from Min. to Max. setting | 55 |
Valve Hex Size | 1 5/8 in.41,3 mm |
Valve Installation Torque | 350 - 375 lbf ft474 - 508 Nm |
Adjustment Screw Internal Hex Size | 5/32 in.4 mm |
Locknut Hex Size | 9/16 in.15 mm |
Locknut Torque | 80 - 90 lbf in.9 - 10 Nm |
Model Weight | 3.30 lb1,50 kg |
Seal kit - Cartridge | Buna: 990024007 |
Seal kit - Cartridge | EPDM: 990024014 |
Seal kit - Cartridge | Polyurethane: 990024002 |
Seal kit - Cartridge | Viton: 990024006 |
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
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