Purge Valves: 4900 Series

Compact, convenient, and 100% factory tested, FloLok’s manually operated Purge Valves are used to bleed, vent or drain system media or pressure. FloLok Purge Valves require only 1/4 turn with a wrench from finger tight to create a leak tight seal up to 4000 PSIG. They are available in 316 Stainless Steel and Brass in a variety of end connections including 1/8" through 1/2" tube, tube adapter, and male and female NPT. An optional Teflon ball is also available.


    * Working Pressures    
Part Number End Connection Type End Connection Inlet Size A inches A mm. B inches B mm. C Hex Size Stainless Steel* Brass*
4902 Fractional Tube Fitting 1/8 1.84 46.74 0.59 14.99 1/2 --- ---
4912 Fractional Tube Fitting 1/4 1.94 49.28 0.69 17.53 1/2 --- ---
4922 Fractional Tube Fitting 3/8 2.03 51.56 0.75 19.05 5/8 --- ---
4932 Fractional Tube Fitting 1/2 2.19 55.63 0.88 22.35 13/16 --- ---
4910 Female NPT 1/8 1.56 39.62 0.53 13.46 9/16 --- ---
4920 Female NPT 1/4 1.75 44.45 0.72 18.29 3/4 --- ---
4930 Female NPT 3/8 1.89 48.01 0.78 19.81 7/8 --- ---
4940 Female NPT 1/2 1.98 50.29 0.97 24.64 1-1/16 --- ---
4906 Male NPT 1/8 1.62 41.15 0.38 9.65 1/2 --- ---
4916 Male NPT 1/4 1.81 45.97 0.56 14.22 9/16 --- ---
4926 Male NPT 3/8 1.84 46.74 0.56 14.22 11/16 --- ---
4936 Male NPT 1/2 2.09 53.09 0.75 19.05 7/8 --- ---
4952 Tube Adapter 1/8 1.79 45.47 0.53 13.46 1/2 --- ---
4954 Tube Adapter 1/4 1.87 47.5 0.63 16.00 1/2 --- ---
4956 Tube Adapter 3/8 1.94 49.28 0.69 17.53 1/2 --- ---
4958 Tube Adapter 1/2 2.15 54.61 0.91 23.11 9/16 --- ---


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