Quarter-Turn Angle Valve

Quarter-Turn Angle Valves are widely used in fluid and gas control systems to quickly open or shut off flow with a simple 90-degree rotation, providing fast response, reliable sealing, and easy operation. The angled body design allows for efficient installation in limited spaces and helps change flow direction while maintaining stable performance.

Product Feature and Application

Quarter-Turn Angle Valves feature a ball-seated mechanism that allows for immediate flow shut-off with a simple 90-degree rotation. Their primary feature is the 90-degree orientation, which simplifies connections between wall pipes and flexible hoses in tight spaces. They are widely applied in residential bathrooms and kitchens for toilets, sinks, and faucets. The durable brass body and reliable seal provide a long-lasting, leak-free solution for installers.

Product Parameter

Technical Specification

Nominal Pressure: 1.0 MPa

Working Medium: Water, non-corrosive and non-flammable gases

Operating Temperature: -10 °C ≤ T ≤ 90 °C

Thread conforms to ISO 228 standard

Product Dimension

Installation Guidelines

Professional Installation: Quarter-Turn Angle 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: Quarter-Turn Angle 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 Quarter-Turn Angle 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.