Safety Breakaway Valve（M42X1.5）

Safety Breakaway Valve (M42×1.5 High-Pressure for Gas Station Dispensers)

Core Differentiation：Adopts a composite structure of “aluminum alloy housing + stainless steel M42×1.5 thread component + fiber-reinforced plastic internal parts + PU/NBR seals” with a preset breakaway force of 1200-1500N — breaking through the limitations of ordinary valves such as “single material, poor thread adaptability, redundant/insufficient breakaway force”. The M42×1.5 thread precisely matches gas station high-pressure pipelines, and the composite material achieves the synergistic advantages of “lightweight corrosion resistance + strong connection wear resistance + seal anti-aging”; the other end can be selected as internal or external thread, flexibly adapting to different interface types of dispensers and nozzles.

1. Performance Parameters
- Material System：
- Housing: Aluminum alloy (lightweight, resistant to gasoline/diesel corrosion);
- Thread Component: Stainless steel (M42×1.5 specification, ensuring connection strength and wear resistance);
- Internal Parts: High-strength fiber-reinforced plastic (impact-resistant, self-lubricating, maintaining internal structural stability);
- Seals: PU (polyurethane) + NBR (nitrile butadiene rubber) (fuel-aging resistant, instantaneous sealing during separation).
- Specification Parameters：
- Thread: Fixed end M42×1.5 external thread, adaptive end optional internal/external thread;
- Breakaway Force: 1200-1500N (customizable, balancing safety redundancy and triggering reliability);
- Working Pressure: ≤0.6 MPa, Applicable Medium: Gasoline, Diesel, Working Temperature: -20℃~+60℃.

2. Working Principle, Scenarios & Usage
- Working Principle：
The valve integrates a *precise shear separation structure*. When the external force (such as violent dragging of the nozzle by a vehicle) reaches the preset value of 1200-1500N, the aluminum alloy housing and the M42×1.5 stainless steel thread component separate quickly, and the internal PU/NBR seals block the fuel channel simultaneously, achieving “breakaway = sealing, no leakage”.
- Application Scenarios：
M42×1.5 specification dispenser-nozzle high-pressure connection pipelines in gas stations, designed to prevent pipeline breakage and large-scale fuel leakage caused by violent dragging, protecting equipment and on-site safety.
- Usage：
1. Installation：
- Thread Selection: Select the breakaway valve with internal or external thread at the adaptive end according to the dispenser/nozzle interface type;
- Thread Alignment: Align the M42×1.5 external thread end with the gas station M42×1.5 specification pipeline interface, and align the other end with the dispenser/nozzle pipeline interface, ensuring no thread damage or debris;
- Tightening Operation: Use a corresponding wrench to tighten the stainless steel thread component **evenly and slowly** (verify the seal by pressure test).
2. Operation：
The passage is smooth during normal refueling, and it automatically separates and seals when the external force meets the standard, without manual intervention throughout the process.
3. Maintenance：
- Quarterly Inspection: Check the wear of M42×1.5 threads, corrosion of the aluminum alloy housing, and aging of PU/NBR seals;
- Function Test: Apply external force within the range of 1200-1500N with professional tools to verify separation reliability and sealing integrity;
- Component Replacement: Replace corresponding parts or the entire valve in time if threads are worn, seals are aged, or the breakaway force deviates from the preset value.