


Technical Specifications
Maximum fluid working pressure…......…………………………………….100 psi (7 bar, 0.7 MPa)
Maximum free flow delivery*………...............……………………………………7.0 gpm (26.5 lpm)
Maximum pump speed…………………………….................................………………………330 cpm
Displacement per cycle**…………………………........………………………0.02 gallon (0.076 liter)
Maximum suction lift……………….....................……………………………………...12 ft (3.7 m) dry
Maximum operating temperature** ……….………...............………………………250 °F (120° C)
Maximum diaphragm operating temperature***
PTFE………………………………………………………........................………….220°F (104.4°C)
Santoprene……………………….......................…………………………………….180°F (82.2°C)
Buna-N…………………………………………………........................………………180°F (82.2°C)
TPE……………………………………………………..........................……………….150°F (65.5°C)
Typical sound level
at 50 psi (3.5 bar, 0.35 MPa) Air @ 50 cpm ……………...................………….…...75 dBa
Maximum air consumption ………………………………………….....………….6 scfm (0.17 m³/min)
Air Pressure operating range……………………………….............…………...............20 to 100 psi
(1.4 to 8.4 bar, 0.14 to 0.84 MPa)
Air inlet size …………………………………..............………………………………….1/4 npt(f) or bspt(f)
Fluid inlet & outlet size .........................…………………………………………………………3/8 npt(f)
Weight ………………………………………........................……………………………………5.2 lb (2.4 kg)
Wetted parts (in addition to ball seat and diaphragm materials-which may vary by pump) ......................................................................………acetal with stainless Steel fibers, PTFE
Instructional manual…..........................……………………………………………………………308533
* Flow Rates are with muffler and do not vary based on diaphragm material
** Displacement per cycle may vary based on suction condition, discharge head and fluid type
*** Actual pump performance may be affected by prolonged usage at temperature
GRACO D31255
3/8" HUSKY 307
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