CAST STEEL PLUG VALVES

Audco Steel plug valve
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Size Range: 15 - 300mm
Body Material: Cast Steel
Plug Material: Cast Steel (Lo Mu coated)
End Connections:Screwed, Flanged
Pressure Rating: 150LB/300LB, BS4504 10/16/25/40

The Taper Plug valve is manufactured in sizes 1/2 inch thru 12 inch and is used on a wide variety of liquid, gaseous, and slurry services.

The taperd plug is held firmly into its tapered seat, but can be so adjusted that complete leak tightness is achieved together with smooth valve operation. The tapered seat surfaces of the plug and body are not exposed to the line fluid when the valve is in the open position, so that the effects of corrosion and erosion are confined to the less important parts of the valve. Also since there is a straight flowpath through the valve, there is very little resistance to flow, and pressure loss is minimized.

Super LoMu Treatment

All Carbon Steel taper plug valves, sizes 1-1/2 inch and above, have plugs with Flowserve Audco Supor LoMu treatment. In this unique process, low friction PTFE is incorporated in the surface structure of the valve plug metal. This gives easier operation and enhanced resistance to taper lock over thousands of operations or many years of service.

Nordstrom Dynamic plug valve
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Size Range: 25 - 300mm
Body Material: Cast Steel
Plug Material: Cast Steel (Lo Mu coated)
End Connections:Screwed, Flanged
Pressure Rating: 150LB/300LB, BS4504 10/16/25/40

The Flowserve Nordstrom Dynamic Balance valve is the premier Nordstrom plug valve which incorporates proven features and user benefits from over sixty years of experience in endless valve applications and design technology.

A pressure-balanced plug assures predictable torque even under high pressure differential, vibration and thermal cycling. Pressure-energized stem seals eliminate external adjustments and the stem and cover weatherseal provides superior corrosion resistance in hostile environments.

The Dynamic Balance plug valve is available in the broadest range of sizes, pressure classes, and materials of construction of any Nordstrom Audco product. Dynamic Balance valves are available in sizes from 1 to 30 in ANSI pressure classes from 150 to 2500, and in sizes 2-1/16 to 4-1/16 in API pressure classes 3000 and 5000.

Features:

  • Blow out proof stem
  • Metal to Metal Seat
  • Pressure balanced plug with anti-friction coating - turns easily

Nordstrom steel plug valve
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Size Range: 15 - 300mm
Body Material: Cast Steel
Plug Material: Cast Steel (Lo Mu coated)
End Connections:Screwed, Flanged
Pressure Rating: 150LB/300LB/600LB, BS4504 10/16/25/40/100

The Flowserve Super Nordstrom plug valve carries on the Nordstrom tradition of valving excellence. Complementing the broad line of Dynamic Balance plug valves, the Super Nordstrom valve offers dependable, bubble-tight shut-off and predictable torque in an economical line of valves in a smaller size range (1/2 through 4) for low to medium pressure (ANSI classes 150, 300 and 600).

The Super Nordstrom design features a stainless steel spring that is compressed between the small end of the plug and body. This applies a constant force to the plug, tending to lift it out of the taper. This movement of the plug, however, is limited by stainless steel controlled-dimension washers located between the large end of the plug and cover. The "controlled-balance" effect is maintained by the spring pressure at the small end of the plug and the controlled dimension washers at the large end.

Extensive testing - not to mention years of experience with Dynamic Balance plug valves - has shown that this precisely controlled vertical lifting of the plug eliminates wedging of the plug in the body taper without affecting tight shut-off. The plug is permanently adjusted at plant assembly by selection of the proper washers - thereby eliminating the need for field readjustment.

Features:

  • Controlled balance plug
  • Metal-to-metal seating
  • Tapered plug design
  • Predictable torque and freedom from sticking
  • Sealant injection capability

Durco sleeved plug valve
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Size Range: 25 - 300mm
Body Material: Cast Steel
Plug Material: Cast Steel (Lo Mu coated)
End Connections:Screwed, Flanged
Pressure Rating: 150LB/300LB, BS4504 10/16/25/40

Flowserve invented the non-lubricated plug valve for the most corrosive and difficult chemical services where drop-tight shutoff is an absolute requirement. Nearly 50 years later there are many imitators but no substitute for the quality and reliability, versatility and value you receive with Sleeveline valves.

Durco valves offer the process industries widest range of non-lubricated plug valve models, materials, and configurations. This provides customers the flexibility to specify Sleeveline valves to meet virtually all their applications needs.

Flowserve has the answer to your corrosion-resistant, quarter-turn valving needs-whethe for on-off or modulating control.

Features:

  • Double-D Plug Stem is compatible with most standard actuation equipment.
  • Tapered Plug assures reduced turning torque and in-line seal adjustment.
  • PFA Reverse Lip Diaphragm Provides static and dynamic, self-adjusting stem seal.
  • Actuator Mounting Pads-Actuator bracket mounts directly on flanges for solid support.
  • Wide Materials Selection -Ductile iron through Titanium
  • ANSI or DIN flanges standard. N.P.T. screwed, socket and butt weld available.