4TRADE solvent weld air admittance valve enables venting for soil and ventilating stacks, the advantage of using this equipment is it removes the need for making holes through the roof or external walls. This valve incorporates a sealing diaphragm which under its own weight or slight spring pressure is normally held closed, thus sealing the foul air within the pipework. It is extremely durable and designed to provide secure solvent weld jointing.
- Product is A1 approved in accordance with BS EN 12380, it can be installed below the flood level of connected appliances
- Tested and approved for use in installations varying between -20° & +60°C (no insulation required)
- Airflow: 43 L/s
- Quality product