Actually the 1940's date was my mistake as I typed with the brain ahead of the fingers ... what I really meant to say was that they are approx. 40 years old - circa 1973 to 1975 with the original construction of the building. Thanks for the steering towards the patent file - its 5.5 to 1 and other neat information on their too. Job well done by the group once again. Found one of the 11 DPV's today was flooded from a prior trip .. Probably like months / years ago and in an effort to stop that pesky intermediate chamber drain from blowing water all over the place for the past months an unknown party swapped out the ball drip for a nipple and plug - gee now why didn't I think of that !
Tom - if you are still curious about pics I have plenty of the DPV and the internal during reset I could send .. Although a 1973 DPV doesn't have the same allure as a 1940's would. Let me know I am happy to send them anyway. Dave, _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
