Dry head 3/4”, never seen it

Sincerely,

Daren Welborn

On Nov 2, 2025, at 8:44 AM, Fpdcdesign <[email protected]> wrote:


K factors are determined by orifice size. 3/4” orifice K5.6 doesn’t exist. Do 
you mean 3/4” thread? I believe there are still some dry sprinklers made that 
way.

Todd Williams
Fire Protection Design/Consulting
Stonington, CT
860-608-4559


On Nov 2, 2025 at 8:14 AM, <Teaster1974<mailto:[email protected]>> wrote:


i need a dry barrel head extended coverage (3/4” orifice, extended coverage, 
155 degree, k 5.6) for ordinary hazard.


i cant find any for OH.

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