piston

Maximum speed of plunger pair: 2000-2800r/min
Maximum working pressure: 700bar
The plunger pair is a component of a plunger pump. Currently, plunger pairs generally include a plunger, a plunger sleeve, a spring, and two spring seats. The plunger sleeve is equipped with an oil chamber, and the two spring seats are one fitted on the outer circumference of the plunger and the other installed on the outer circumference of the plunger sleeve. The two ends of the spring are respectively in contact with the two spring seats. The plunger slides with the plunger sleeve under the action of oil pressure and is reset by the spring. The side of the plunger sleeve is equipped with an oil outlet hole, which is equipped with an oil outlet valve. In the prior art, the oil outlet hole on the side of the plunger sleeve is a multi-stage stepped hole. The oil outlet valve includes a valve seat, a valve plate, a reset spring, and a valve cover from the inside to the outside, which are tightly matched in sequence. In the through-hole.