Plunger Diameter	Displacement at Pump Strokes Per Minute
	100		150		200		250		300
inches	gpm	psi	gpm	psi	gpm	psi	gpm	psi	gpm	psi
3-3/4	115	10,500	172	8,050	230	6,034	287	4,830	344	4,032
4	131	9,420	196	7,078	261	5,308	327	4,250	392	3,540
4-1/2	165	7,500	248	5,598	330	4,192	413	3,350	496	2,799
5	204	6,000	306	4,525	408	3,394	510	2,712	612	2,263

 

Ratings are based on 90% mechanical efficiency and 100% volumetric efficiency.