The Yorkshire RV35 integral solder ring (ISR) 15mm air release valve is made of copper. This impermeable fitting provides protection against water supply contaminants and resists corrosion for reliable use in plumbing systems with properly installed syste
The Yorkshire RV35 integral solder ring (ISR) 15mm air release valve is made of copper. This impermeable fitting provides protection against water supply contaminants and resists corrosion for reliable use in plumbing systems with properly installed syste