YH-401 Brass Vertical Check Valve

【Core Advantages】
YH-401 brass vertical check valve blocks backflow automatically relying on gravity, specially designed for vertical pipelines. Forged HPb59-1 brass body owns higher strength than cast/zinc alloy valves. Simple internal structure realizes maintenance-free service over 10 years, a core brass check valve for household booster pump systems.

【Product Features】
• Nominal Pressure: 1.6 MPa
• Working Medium: Water, Non-causticity liquid.
• Working Temperature: 0°C - 100°C
• Parallel Pipe Thread to ISO228

【Applications】
Installed on pump outlets, water heater and solar heating pipelines to prevent backflow damage to water meters and boilers, widely adopted in residential and light commercial water supply projects.

【FAQs & Solutions】
Q: Can I install it horizontally?
A: No, vertical upward flow only; choose YH-402 horizontal check valve for horizontal pipes.
Q: Backflow still occurs after installation?
A: Clear debris between disc and seat, replace damaged EPDM seal and check flow direction.

【Important Notes】
Install vertically with the flow arrow pointing upward; horizontal or inverted installation will cause the valve to remain closed or leak.
Ensure the pipe is properly supported so that the valve does not bear the weight of the piping.
Flush the pipeline before installation to remove debris that could prevent the disc from seating.
Suitable for water up to 100°C; not for steam, gas, oils, or corrosive chemicals.
Do not disassemble while the system is under pressure; shut off and drain the line first.