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  PLUG VALVE
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3Z Eccentric Plug Valves
Eccentric Plug Valves are designed to handle a wide variety of liquids, gasses and solids, including water, air, petroleum, paint and non-corrosive chemicals. Eccentric plug valves are used in power and chemical plants, paper mills, water and waste water treatment plants, HVAC applications as well as hot process applications, and mining operations.
Basic structure is consists of plug, cover, body, position indicators, stem seal and bearing. Single piece plug/stem is designed for a quick lift camming motion to provide both low torque and reduced wear of the plug face elastomer.

The elastomer extends along the stem in both directions to protect the integral tunnions and form the bearing interference. A wide range of plug elastomers are available to assure complete fluid compatibility.
Body casting is in ASTM A126 Class B cast iron and conforms to the leading standard for wall thickness. Flange thickness, diameter and drilling fully conform to ANSI B16.1 Class 150. Alternative flanged, screwed or mechanical joint ends are available. A high quality two-part epoxy coating can be applied externally and internally to protect the casting integrity and assure long, trouble-free performance.

Features


● One-Piece Cast Plug Feature
3Z Eccentric Plug valves feature a plug with upper and lower shaft in a one-piece casting. The straight plug face allows for inherent linear flow characteristic. The plug rotates completely out of flow, allowing high, straight-through flow capacity. Because the plug is out of flow path, it provides increased plug life in abrasive application.

● Resilient Plug Facings for Dead-Tight Shutoff Feature
3Z valves are available with a variety of resilient plug facings suitable for temperatures up to 450 F (232 C). Resilient-faced plugs provide dead-tight shutoff without the use of sealing lubricants. Even if small solids are trapped between the plug and seat, the resilient facing provides tight shutoff and prevents seat damage.
The resilient plug design provides drip-tight shutoff on wet service applications up to the full pressure rating of the valve with pressure in either direction. Materials available include chloroprene, acrulonitrile-butadiene, hard natural rubber, chloro-isobutene isoprene, hard rubber with fluoro rebber. All-metal plugs are also available for high-temperature or throttling applications where dead tight shutoff is not required.

● Bolted Cover Feature
3Z valves have a rugged, one piece bolted cover for maximum strength. It houses upper bearing and shaft seals to increase cycle life. If maintenance is ever required, ease of disassembly allows accessibility to internal components.


● Wide Choice of Body Materials Feature
3Z offers the most compete line of eccentric body materials to meet the requirements of a broad range of applications such as Cast Iron, Bronze, Nickel, Carbon Steel, Stain Less Steel, Alloy 20, CD4M, Monel and Hastelloy C, from our own foundry.

● Choice of Patterns & End Styles Feature
A Complete choice of patterns and end styles includes ANSI, DIN, BS, or JIS standards.

● High Flow Capacity Feature
Clean interior design and straight through flow allow high maximum capacity with minimum pressure drop.

● Long-Life Stem Seals Feature
A Variety of stem seal materials provides Zero-Maintenance sealing that matches valve performance and assures long life and reliability.

● Corrosion-Resistant Bearing Feature
Heavy-duty bearings resist corrosion to prevent binding and assure lasting easy valve operation without lubrication. These rugged stainless steel bearings are furnished in the cover and body of all 3Z valves.