STEAM PISTON PUMP
TYPE DW-O
![TYPE DW-O](https://www.p-marushichi.co.jp/wp-content/uploads/2023/11/img_20061117T091811400.jpg)
Most popular Duplex type with side-pot designed liquid casing.
TYPE DW-O Heavy pump
![TYPE DW-O Heavy pump](https://www.p-marushichi.co.jp/wp-content/uploads/2023/11/img_20061117T091811775.jpg)
With auxiliary stuffing box and piston rod on the cover end to support the piston rod and avoid easy abrasion of piston-rings.
TYPE DW-OJ
![TYPE DW-OJ](https://www.p-marushichi.co.jp/wp-content/uploads/2023/11/img_20061117T091812150.jpg)
With welded steam jacket on the casing and stuffing box for liquid solidify in normal temperature.
TYPE SW-O
![TYPE SW-O](https://www.p-marushichi.co.jp/wp-content/uploads/2023/11/img_20061117T091812900.jpg)
Special Simplex type suitable for quite low NPSH service.
Reliable operation for 4 – 5 low strokes to higher speed.
Type SW-OJ steam jacketed type also possible.
VALVES
- 1) Conical valve is standard.
Reliable operation for high pressure service with valve and seat faces touching conically. - 2) Sphere (Ball) or Semisphere valve will be selected for pumping liquid of high
viscous or with sludges.