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Reversible Metal Eccentric Plug Valve

This type of reversible metal eccentric plug valve is a flangeless eccentric plug valve with reversible metal seat ring and splined shaft.   The reversible metal eccentric plug valve is available in NPS 3 through 12 (DN 80 through 300), CL150/300/600 (PN 10 through PN 100). The camming of the segmented ball permits high capacity flow, and the valve body (being similar to the V500) gives it rugged strength. It features as follows:

Excellent Flow Characteristic—Precise contouring of V-notch ball provides a modified equal percentage flow characteristic.

High Capacity—Unrestricted, straight-through, flow design provides greater capacity than many conventional globe and rotary eccentric plug valves.

Long Seat Life—Patented V-notch ball cams into and out of the seat minimizing contact with the seat ring for reduced wear and friction. V-notch ball doesn’t contact seat during throttling operation. S31600 (316 stainless steel) or R30006 (Alloy 6) seat ring has two shutoff surfaces and can be easily reversed, reducing downtime.

One-Piece Body—Valve body is cast in one piece. There are no body gaskets to leak as a result of pipeline stresses.

Operational Versatility—Self-centering seat ring and rugged V-notch ball allow forward or reverse flow with tight shutoff in either flow direction.

Easy Installation—Integral valve flanges mate with many different classes of pipeline flanges, satisfying a variety of piping requirements. Flanges eliminate exposed line flange bolting, shorten alignment and installation time, and promote secure valve installations and piping integrity. Flangeless valves are automatically self-centering on line bolting for easy installation.

Simple Assembly and Maintenance—No special orientation, precision clamping or repetitive centering of V-notch ball and seat ring is required when tightening the retainer, promoting accurate alignment and easy assembly.

Sour Service Capability—Trim and bolting materials are available for applications handling sour fluids and gases. These constructions comply with the requirements of NACE MR0175-2002.

Rugged Construction—Durable, solid metal seat ring and ball shut off tightly. Oversized shaft diameters and rugged trim parts allow high pressure drops.

Reliable Performance—Patented seat ring design self-centers, self-laps, and dynamically aligns with V-notch ball, giving superior cycle life. Optional sealed metal bearings help prevent particle buildup and valve shaft seizure in severe applications.

(Edited by Eloise Tsai)

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