|Posted by Dale's Plumbing Service on November 11, 1999 at 23:17:53:|
|In response to Re: freeze resistant valve|
: I am looking for a series of valves, in sizes 1/2 to 3 inch NPT, that can be frozen without damaging the valve.
: They are for water systems on railroad maintenance equipment.
: For years we have used ordinary ball valves. Water trapped in the annular space around the ball
: freezes & cracks the housing. Currently we drill a vent hole through the casting, but it blows out
: water on transition from on to off.
: I've looked at butterfly/wafer type, but flanges take up too much space. Globes will work, but too much
: Valves are on/off, need to be drain, or be of design not to trap any water, but don't have to operate
: Thanks for any help. kevin 1-800-535-6726 x2261
Kevin, I think you need stop and waste ball valves. They need to have the drain petcock opened manually and i think they should have left and right side drains. Dale Peck LMP
|Replies to this post|
|There are none.|