3/8" Bottle Air Vents with Check Valves - Top Vent
Supplied by either Watts or Giacomini
IMPORTANT NOTE, MOST PLUMBING PRODUCTS ARE STATED AS BSP IMPERIAL THREAD MEASUREMENT WHICH MEANS THAT ACTUAL DIAMETER OF THE THREAD SIZE IS APPROXIMATELY 1/4 INCH LARGER THAN THAT STATED IN BSP TERMS. FOR EXAMPLE THIS 3/8 INCH BSP THREAD ACTUALLY MEASURES APPROXIMATELY 5/8 INCH IN DIAMETER
