If you're trying to save a few gpm by going with the smaller orifice, it's really not worth the effort. Plus unless you're bagging the heads, smaller orifice is more likely to get clogged sooner than larger orifice from the spraying effort. In addition, depending on the hazard you're protecting, a little cushion on the discharge side may not be a bad thing. No need to shave the hydraulics that close. When heads get covered and need to be replaced, the smaller orifice probably won't be noticed and the head will be replaced with a standard 5.6 anyway. Keep it simple.
What is the key material being sprayed? Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Randy Knutson Sent: Monday, June 15, 2009 1:42 PM To: [email protected] Subject: Mixing k-factors in paintspray booths Forum Members, Can I use a smaller k-factor sprinkler in the pit and exhaust plenum of a paint spray booth? Due to the geometry of the pit and exhaust plenum. The sprinklers in there are covering about 36 square feet per sprinkler. Any insight would be appreciated. Randy Knutson Shilo Automatic Sprinkler, Inc. _______________________________________________ Sprinklerforum mailing list http://lists.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) _______________________________________________ Sprinklerforum mailing list http://lists.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)
