Straight Pattern Gas Valve

Straight Pattern Gas Valves are key components used in gas pipeline systems to control, regulate, and shut off the flow of gas safely and efficiently. Featuring a straight-through flow design, these valves minimize pressure loss, ensure smooth gas transmission, and enhance overall system reliability.

Product Feature and Application

Straight Pattern Gas Valves feature a linear flow path that minimizes pressure drop and turbulence, ensuring efficient gas delivery. Their primary feature is a heavy-duty, blow-out proof stem and a precision-machined ball for a bubble-tight seal. These valves are widely applied in residential gas meters, kitchen appliances, and commercial furnace lines. Their simple, robust design allows for quick shut-off in critical safety situations.

Product Parameter

Technical Specification

Nominal Pressure: 1.6 MPa

Working Medium: Domestic Town Gas, Natural Gas, Liquefied Petroleum Gas (LPG)

Operating Temperature: -10 °C ≤ T ≤ 80 °C

Thread conforms to ISO 228 standard

Product Dimension

Installation Guidelines

Professional Installation:Straight Pattern Gas Valves must be installed by certified gas technicians. Ensure the gas supply is shut off and the work area is well-ventilated.

Thread Integrity: Use only gas-rated PTFE tape (typically yellow) or specialized pipe dope. Apply sealant to male threads only, ensuring no excess material enters the valve body to obstruct the seal.

Torque Management: Use a proper wrench on the valve end closest to the pipe. Do not over-tighten, as excessive force can crack the valve body or damage the internal seats, leading to hazardous leaks.

Leak Testing: After installation, never use a flame to check for leaks. Apply a certified leak-detection solution or soapy water to all joints; bubbles indicate a leak that must be corrected immediately.

Operating Instructions

Function: Straight Pattern Gas Valves are for on/off service only. They must remain in the fully open or fully closed position. Partial opening can cause seat erosion and seal failure.

Handle Position: The handle serves as a visual indicator. When the handle is parallel to the pipe, the valve is OPEN; when perpendicular, it is CLOSED.

Manual Operation: These valves are designed for manual operation. Do not use tools or "cheater bars" to turn the handle. If a valve is difficult to operate, it likely requires replacement.

Inspection & Maintenance

Periodic Checks: Inspect valves at least twice a year for signs of corrosion, handle damage, or gas odors. Cycle the valve (Open/Close) periodically to ensure the ball does not seize.

No Disassembly: Due to critical safety tolerances, do not attempt to disassemble or repair the internal components of a gas valve. If the valve leaks or fails to shut off, replace the entire unit immediately.

Environment: Keep the valve area free of corrosive chemicals or high-moisture accumulation, which can degrade the brass body or stem seals over time.

Emergency Protocol: In case of a gas leak, immediately close the upstream main valve, evacuate the area, and contact emergency services.