Types of Non-Return Valve

1. Available
i. 1/2" BSP Thread Type (Heavy)
ii. Simple 9.6 O.D. Coppa Tube Braze Type
iii. 1/4' BSP Thread
(a) Inside Radius or
(b) 8mm Copper Tube Braze

2. PTFE (TEFLON) use instead of "O" Ring for Longlife

3. Smooth Action & Tested