The Bellofram the Belo Fu T65 type relief valve preset non-adjustable pressure regulator, the the Bellofram T60 regulator American Bellofram T65 regulator of the difference is Bellofram T60 preset adjustable voltage regulator, T60 with filter The function regulator Bellofram T65 preset, adjustable precision regulator voltage regulator mounted on the tube, similar to the T60 type, in addition to without the filter regulator. (Miss Li: 13537502453 0755-28145886) Type Model caliber range 65 960-071-000 960-150-000 960-151-000 1/4 "1/4 1/4" PSI :0-20 KPA: 0 - 200 20-40140-280 40-60280-420