Valves — all types

Choosing Valves — all types

Valves are the safety mechanism of any plumbing system — the cheapest part that prevents the most expensive problem. A ball valve closes in a quarter turn and gives fast full shut-off; a gate valve opens full-bore without restricting flow, which is why it is used on main lines. An angle valve goes before each fitting — mixer, spray, heater — so you can isolate it on its own. A check valve stops water flowing back and is fitted after pumps. Brass is the standard material, with common sizes from ½ to 2 inch.