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DeZURIK
PTW/PFW PLUG VALVES

PTW/PFW PLUG VALVES

Product catalog summary

Design & Construction
DeZURIK 3- and 4-Way PTW/PFW Plug Valves are engineered for the throttling and diversion of various liquids and gases, including clean, dirty, viscous, corrosive, and abrasive types. They feature single and double tapered plug styles for diverse flow combinations. Resilient seated plugs ensure dead-tight shutoff with lever and double handwheel actuators, while all-metal plugs are suitable for high-temperature applications but do not provide dead-tight shutoff.

Tapered Plug Design
The tapered plug design facilitates lift, turn, and reseat operations, ensuring dead-tight shutoff with specific actuators. Metal seated and hard rubber lined valves offer smooth operation due to clearance between the plug and seat.

Corrosion-Resistant Bearings
Heavy-duty bearings made of 316 stainless steel prevent corrosion and binding, ensuring long-lasting, easy operation without lubrication. Hard rubber bearings are used in rubber-lined valves.

Long-Life Stem Seal
The valve's packing and gland are accessible without disassembly, featuring multiple V-ring packing for a reliable seal that rarely needs adjustment. The packing gland allows for easy adjustments if necessary.

All-Metal Plugs
Available for high-temperature or throttling applications, all-metal plugs are made from the same material as the valve body, except for cast iron valves which use stainless steel plugs. These are compatible with manual and powered actuators where dead-tight shutoff is not required.

Choice of Body Materials
The valves are available in various materials, including cast iron, aluminum, carbon steel, and 316 stainless steel, with options for high alloys. Cast iron valves can have a hard rubber lining for resistance to chlorine and corrosives.

Resilient Plug Facings
These provide dead-tight shutoff without sealing lubricants when used with specific actuators. They can handle small solids without damaging the seat, and hard natural rubber facings can have a soft rubber overlay for certain applications.

Lift, Turn, Reseat Operation
Lever and double handwheel actuators facilitate this operation, preventing binding or scraping between the plug and seat during operation.

Wide Line of Actuators
Available actuators include levers, handwheels, chainwheels, electric motors, and cylinders, all providing external indication of plug position and flow.

Flow Combinations
Various flow combinations are available for 3-Way and 4-Way valves, with recommendations for flow direction to ensure tight shutoff.

Catalog excerpts

DeZURIK 3-WAY AND 4-WAY PTW/PFW PLUG VALVES

Open the catalog to page 1

Design & Construction DeZURIK 3- and 4-Way valves are designed for throttling and diversion of clean, dirty, viscous and corrosive liquids; sludge, abrasive and fibrous slurries; and clean, dirty and corrosive gases. They feature single and double tapered plug styles, which can be arranged into a variety of flow combinations. Resilient seated plugs are available for dead-tight shutoff with lever and double handwheel actuators only. All metal plugs are available for high temperature applications but will not provide dead-tight shut off. Single handwheel and powered actuators are available for...

Open the catalog to page 2

All-Metal Plugs All-metal plugs are available for high temperature or throttling applications. Metal plugs are furnished in the same material as the valve body, except cast iron valves which feature stainless steel plugs. All-metal plugs can be used with manual and powered actuators where dead-tight shutoff is not required. Choice of Body Materials The DeZURIK multiport line offers a variety of materials to meet the requirements of even the most difficult applications. Standard materials include cast iron, aluminum, carbon steel, and 316 stainless steel. Cast iron valves are available with a...

Open the catalog to page 3

Flow Combinations Lift, Turn, Reseat Operation 3-Way 3 2 For tight shutoff, it is recommended that the flow be against the back side of the plug. 3 Lift, Turn, Reseat Operation Lever and double handwheel actuators provide lift, turn and reseat operation. The lever or top handwheel is used to lift the tapered plug away from the seat to provide clearance for easy operation. With the plug unseated, there is no binding or scraping between the plug and seat. At the desired flow position, the plug is reseated. For tight shutoff, it is recommended that the flow be against the back side of the plug....

Open the catalog to page 4

PTW/PFW PLUG VALVES

PTW/PFW PLUG VALVES

Catalog excerpts

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