The McAlpine VP100E is a highly versatile universal air admittance valve engineered to regulate pressure within domestic soil and vent systems. Designed to fit standard 4"/110mm soil pipes, it features a dual-fit synthetic rubber finger seal outlet that ensures a secure, airtight push-fit connection. This A1-rated valve is completely vital for preventing the loss of water seals in traps, efficiently stopping foul drain odours from entering the property by opening under negative pressure and closing tightly under positive pressure.

Fully compliant with BS EN 12380:2002 standards, this black valve boasts an impressive air flow capacity of 40 litres per second. It incorporates a durable stainless steel mesh within the air intake to prevent ingress from insects and debris. Suitable for installation either above or below the flood level of connecting appliances, it operates reliably across a wide temperature range of -20C to +60C. While suitable for internal and external use, McAlpine strongly recommends internal installation for optimal long-term performance.

Q: What size pipework is this air admittance valve compatible with?
A: It is designed to fit standard 4"/110mm domestic soil pipes via a push-fit connection.

Q: Can this valve be installed outside the building?
A: While it is rated for external use, the manufacturer strongly recommends internal installation.

Q: What is the operating temperature range for this component?
A: The valve functions efficiently in extreme temperatures ranging from -20C to +60C.

Q: Does it have protection against debris entering the system?
A: Yes, the air intake incorporates a stainless steel mesh to block insects and debris.