COVNA Products
COVNA HKKB Pilot Operated 450 Bar High Pressure Solenoid Valve
HKKB High-Pressure Solenoid Valve
with pilot-operated piston construction with excellent high-pressure performance. Suitable for compress air machine, injecting plastic machine. Widely used in boiler industry, carwashing machines, cleaning machinery, spraying machinery, and so on.
High pressure range up to 450 bar. Consult us to get the solenoid valve solution!
Model
- Function: Normally Closed/Normally Open
- Max Pressure: 450 bar
- Voltage: DC-12V, 24V; AC-24V, 120V, 240V/60Hz; 110V, 220V/50Hz
- Temperature of Media: -10 to 180℃ (14℉ to 356℉)
- Suitable Media: Water, compressed air, etc
- Material: Stainless Steel
Features of COVNA HKKB High-Pressure Solenoid Valves
● High pressure solenoid valve with pilot operated piston construction for compress air machine, and injecting plastic machine.
● With PARKER seals to improve the quality.
● Normally closed type can reach a maximum pressure of 450 bar.
● Normally opened type can reach a maximum pressure of 300 bar.
● Widely used in car wash systems, spray systems and so on.
● High pressure solenoid valves are easy to install, with a simple and straightforward design that allows them to be quickly integrated into existing systems.
HKKB High pressure solenoid valve can be applied to high-pressure water jet cutting machines, high-pressure cleaning machines, gas separation equipment, compressors, and many other machines and devices.
Technical Parameters Of COVNA HKKB High-Pressure Solenoid Valves
| Port size | 1/4", 3/8", 1/2" | Orifice(mm) | 1.2, 2.0, 2.5, 3.0, 5.0, 6.0, 7.0, 8.0 |
| Port Thread | BSPP, BSPT, NPT | Function | Normally Closed/Normally Open |
| Max. Pressure | 450 bar | Voltage | DC-12V, 24V; AC-24V, 120V, 240V/60Hz; 110V, 220V/50Hz |
| Temperature of Media | -100 to 300℃ (148℉ to 572℉) | Suitable Media | Water, Air, Oil, Gas, etc |
| Material | Stainless Steel | Tolerance | ±10% |
| Item | Port Size | Orifice(mm) | Cv | Min Pressure | Max Pressure | |
| AC(24VA) | DC(18W) | |||||
| HKKB-08 | 1/4" | 1.2 | 0.03 | 1 Bar | 300 Bar | 300 Bar |
| HKKB-08 | 1/4" | 2.0 | 0.09 | 1 Bar | 300 Bar | 300 Bar |
| HKKB-10 | 3/8" | 2.5 | 0.15 | 1 Bar | 300 Bar | 300 Bar |
| HKKB-15 | 1/2" | 3.0 | 0.24 | 1 Bar | 300 Bar | 300 Bar |
Dimension of COVNA HKKB High-Pressure Solenoid Valves
Case Reference Of High Pressure Solenoid Valve
| Port Size | 3/8”~2” | Orifice(mm) | 15, 20, 25, 32, 40, 50 |
| Port Thread | BSPP, BSPT, NPT, FLANGE | Function | Normally closed or opened |
| Pressure | 0-1.0 MPa (10 bar) | Voltage | DC-12V, 24V; AC-24V, 120V, 240V/60Hz; 110V, 220V/50Hz |
| Temperature of media | -10~100℃ (14℉ to 212℉) | Suitable Media | Water, gas, oil, etc |
| Material | Brass, Stainless Steel | Sealing Material | NBR, VITON, PTFE, EPDM |
| Coil | S51B,30VA(AC),24W(DC),IP65,100%ED | ||
| Coil | SD01B,28VA(AC),36W(DC),IP65,100%ED | ||
The actuator on my automated valve operates, but the valve won’t turn. Why?
Most likely the valve stem or actuator coupling is broken.
Why doesn’t my valve open or close completely when the actuator operates it?
The electric actuator limit switches or the pneumatic actuator position stops are not correctly adjusted.
When I energize the solenoid on my pneumatic actuated valve, the valve won’t turn. How come?
Probably because there is no air pressure to the solenoid or dirt has jammed it. Also, debris might be trapped inside the valve. Or, the air pressure is not sufficient to operate the actuator. Remember: measure air pressure at the actuator, not at the compressor.
Can I buy an actuator from one manufacturer and mount it to a valve from another manufacturer?
Maybe. First, be sure that the actuator torque output is sufficient to turn the valve reliably. Second, you will have to fabricate a custom mounting bracket and coupling to connect the actuator to the valve.
What happens if I lose power to my electric actuator in the middle of an actuation cycle?
The valve will stop somewhere between full open and close. When power is reapplied to the original circuit, the actuator will complete the cycle.
I ordered a fail open pneumatic actuated valve by mistake. I needed a fail closed one. What can I do?
To make the change just remove the actuator from the valve and turn it, or the valve stem, 90 degrees and remount the actuator.
I’ve installed my automated valve in the line, but now I don’t know if the valve is in the open or closed position. How can I find out?
Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.
Do I have to have the solenoid valve that controls the air supply to my pneumatic actuator mounted right on the actuator?
Remove the actuator from the valve and check the valve stem. Most ball valves have stem flats at right angles to the flow when the valve is in the off position. On butterfly valves check the stem flow arrow marking.
How do I wire up my electric actuator?
Check the electric wiring schematic that came with the actuator for the correct hookup. Sometimes a copy is inside the actuator cover. If it is missing, don’t guess about the connections. Call the manufacturer for a schematic.
I’ve just installed an electric actuated valve and when I power it, it turns the valve 360 degrees and won’t shut off. What’s wrong?
The actuator is wired incorrectly (check the schematic accompanying the actuator), or the external control switch is not the correct type for the actuator.
My electric actuators cycle time is way too fast, can I slow it down?
Not unless you bought it with an optional speed control.
I just replaced a solenoid valve with an electric actuated valve and it won’t work. Why?
Actuators and solenoid valves require different types of electrical control switches. SPDT for actuators, SPST for solenoids. Check the actuator wiring schematic for the correct wiring and switch type.
