Products Description
Bronze U Shape Channel CNG LPG Fuel Filter Integrated With Solenoid Valve
The Bronze U Shape Channel CNG LPG Fuel Filter Integrated With Solenoid Valve is a heavy-duty, dual-function autogas control unit designed for vehicle gas conversion systems. Built with a high-strength corrosion-resistant bronze housing, this component connects the gas cylinder line directly to downstream components, integrating reliable electro-mechanical fuel shut-off with micro-particle physical filtration.
By controlling gas flow directly between the cylinder multivalve and the engine bay, this integrated unit protects high-pressure pressure regulators and CNG solenoid valve units from physical contamination and unexpected fuel leakage across extreme environmental conditions.
Technical Specifications
| Fuel Type | LPG / CNG |
|---|---|
| Gas Channel | U shape |
| Material | Bronze |
| Working Voltage | DC 12V |
| Min. Working Voltage | DC 8V |
| Rated Working Pressure | ≤ 2.2 MPa |
| Flow Direction | Mono-direction |
| Working Ambient Temperature | -40 ~ 120 ℃ |
| Working Ambient Humidity | 5% ~ 100% |
Core Functions & Practical Solutions
1. Automated Channel Shut-Off & Opening
The primary mechanical function of the unit is to open and close the channel of the LPG fuel supply from the cylinder multivalve to the LPG reducer. Powered by a DC 12V system with low-voltage operation down to DC 8V, the solenoid cuts off fuel instantly when the engine switches off or operates in petrol mode, stopping gas pressure buildup and line leaks.
2. High-Efficiency Impurity Filtration
Commercial autogas carries rust scale, dust, and physical debris. The internal filter element is optimized to filter out the physical impurities in LPG fuel before gas reaches sensitive injectors and conversion kit systems, eliminating plunger jamming and premature injector clogged failure.
3. Low-Resistance U-Shape Bronze Design
The engineered U-shape channel ensures low flow resistance under mono-direction gas travel. Its heavy-wall forged bronze casing comfortably handles working pressures up to 2.2 MPa while resisting thermal stress from -40 ℃ freezing temperatures up to 120 ℃ engine bay heat.
Frequently Asked Questions (FAQ)
Q: Why does an LPG solenoid valve fail to energize or open during winter morning cold starts?
A: Low ambient temperatures down to -40 ℃ often cause severe battery voltage drops during ignition. Traditional 12V solenoids fail to actuate when supply voltage drops below 10V. This unit features a minimum working voltage of DC 8V, guaranteeing reliable solenoid opening and gas supply even under low battery conditions.
Q: What are the main symptoms of a clogged internal LPG filter element?
A: Key indicators include sudden loss of engine power under high acceleration, pressure drops on the gas rail, or the vehicle automatically reverting from gas to petrol mode. Replacing or cleaning the internal filter element every 10,000 to 15,000 km prevents these physical impurity blockages.
Q: Does this valve support bi-directional gas flow during installation?
A: No. The U-shape internal channel is strictly designed for mono-direction flow. Installing the valve in reverse will disrupt internal sealing and reduce filtration effectiveness. Always align gas line plumbing with the flow direction arrow marked on the bronze housing.
Q: Will high engine compartment humidity or water spray damage the bronze valve?
A: No. The solid bronze construction offers corrosion resistance, and the unit is certified for 5% to 100% working ambient humidity. The electrical coil housing prevents moisture ingress and short circuits caused by ambient condensation.
