2 replies to this topic

[Art Montemayor]

gshahriar:

If you're dealing with a fire-fighting design concept, I believe you are talking about the same valve, regardless of what you call it - even "mystery guest".

An "Automatic Deluge Valve" is simply a type of valve that:

1) is normally automatically actuated upon a fire alarm signal; therefore, it must be actuated by an appropriate actuator that is dependable and totally isolated from other power sources or dependencies that could jeopardize the ability to open when needed. In other words, if it is actuated by a pneumatic actuator, you must have a secure and reliable source for the air at the time of the need. Obviously, the signal and power source must be isolated from any fire.

2) has a minimal pressure drop characteristic and an ability to furnish all the design fire water flowrate at the minimum design firewater header pressure. In other words, you usually wind up using a full-bore, high Cv ball valve that fails in the open position. The valve must be capable of being tested and inspected while on stream 100% of the time in order to ensure that it is reliable and ready to act upon demand at any given time.

3) must meet the rigorous specifications of your insurance carrier. This probably is the toughest requirement (or it should be!).

I believe that covers the main scope of this valve. I'm open to hearing from other interested or experienced users/designers in the field.

I hope this helps.