Plunger piston valves

FREE-VALVE’s plunger piston valves are used for cutting off or connecting the medium of pipelines of various kinds of systems such as petroleum, chemical industry, electric power, etc.

Working principle and Characteristics:

Plunger piston valves are variations of globe valves. Disc and seat are designed basing on the plunger principle.For valves opening and closing manually, valve will close when turning clockwise,valve will  open when turning anticlockwise.Driving valve disc will be moved up and down through the lifting motion of stem to reach the opening and closing of the seal ring.

The plunger piston valve belongs to the forced sealing type valve. The plunger and the sealing ring use interference fit. When the plunger enters the sealing ring, the sealing ring is compressed and tightly enveloped against the surface.

At this time, diameter-phase component force produced on sealing ring will be greater than the fluid component force, so as to ensure the tight sealing.

When the plunger is pulled out, the sealing ring is restored to its original state under the elastic action of the material.The sealing ring is made of a new type of non-metallic material , which can withstand long time using on working service.

Technical Specification

Flange Standards :HG/T20592

Nominal Pressure: 1.0MPa,Class150

Size Range :DN50~DN 200, NPS2 ~NPS8

Connection type:Flange

Working Temperature ≤250℃

Operating method: Manual, Pneumatic and Electric

Pressure test GB/T13927

Face to Face GB/T12221

Application

You will find FREE-VALVE’s  plunger piston valves are installed at petroleum, chemical industry, electric power, etc.

 Model：U41S-25C

Price terms:FOB,CIF,FCA,CFR

Price:50-3000USD/set

Origin:China

Brand:FREE-VALVE

Wechat ID:Free_Valve

Email:marketing@free-valve.com

Skype :marketing@free-valve.com

Mobile :+8619937155563

Whats app:+8613460250295