Plug Valves · Four-Way Plug Valves
3-16 Inch Tapered Four-Way Plug Valves
Tapered four-way plug valves divert flow between three alternative outlets with a quarter turn: the tapered plug seats progressively into the body, so throttling and diversion of clean, dirty, viscous and corrosive liquids, sludges, abrasive and fibrous slurries, and corrosive gases are all within the same execution. The benchmark page covers 3-16 inch (80-400 mm) sizes, pressure rated to 125 psi (860 kPa) CWP with temperatures to 400 F (200 C), single or double tapered plug styles, and body materials from cast iron, ni-resist, aluminum and carbon steel to 316 stainless steel with higher alloys on application.
Part of the Four-Way Plug Valves family
Last updated: 2026-11
Specifications
| size range | 3-16 inch (80-400 mm) |
|---|---|
| temperature range | up to 400 °F (200 °C) |
| pressure class | 125 psi (860 kPa) CWP |
| body materials | Cast iron, Ni-resist, Aluminum, Carbon steel, 316 stainless steel |
| valve style | 4-way tapered plug (3-way execution in same family) |
| actuator types | Lever, Hand wheel, Chain wheel, Cylinder, Electric motor |
| media service | Throttling and diversion of clean, dirty, viscous and corrosive liquids; sludge, abrasive and fibrous slurries; and clean, dirty and corrosive gases |
| seat options | Resilient seated plugs for dead-tight shutoff (lever and double handwheel actuators), All-metal plugs for high temperature applications that do not require dead-tight shutoff |
| bearing stem design | Heavy duty stainless steel bearings and long-life stem seals |
| industries served | Sewage Treatment, Water Treatment & Distribution, Chemical & Petrochemical, Pulp & Paper, Mining, Power |
| plug styles | Single and double tapered plug styles, arrangeable into a variety of flow combinations |
Application & selection guidance
Select this execution where a flow path must be redirected between three outlets - changeover between heaters, filters or alternative flow routes - rather than merely throttled, and where the low pressure class (125 psi CWP) and temperature ceiling (400 F) sit inside the service envelope. Choose resilient seated plugs for dead-tight shutoff with lever or double handwheel operation, or all-metal plugs where high temperature rules out resilient seats and dead-tight shutoff is not required. Match the body alloy to the medium: ni-resist and 316 SS for corrosive slurries, cast iron and aluminum for water and air duties.
Frequently asked questions
When is a four-way plug valve preferred over two two-way valves?
A four-way execution diverts between three outlets in one quarter turn with a single operator and a single body cavity, which removes the sequencing error and leakage paths of a two-valve changeover. In sludge, slurry and fibrous media the tapered plug wipes the seat as it turns, which two gate or globe arrangements cannot tolerate as cleanly.
What are the pressure and temperature limits of this execution?
The benchmark page rates the range at 125 psi (860 kPa) CWP with temperatures up to 400 F (200 C), in sizes 3-16 inch (80-400 mm). Those figures are cold working pressure - de-rate for hot service against the manufacturers pressure-temperature table before committing, and confirm the alloy compatibility with the medium.
Which plug and actuator combinations are available?
Single and double tapered plug styles can be arranged into a variety of flow combinations. Resilient seated plugs give dead-tight shutoff with lever, handwheel, chain wheel, cylinder or electric motor actuation; all-metal plugs suit higher temperature duties where dead-tight shutoff is not required. Heavy duty stainless steel bearings and long-life stem seals are standard across the range.
Ordering & documentation
Documents
Ask for the documentation set you need with the inquiry — typical items for this execution (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
A quotation-ready inquiry states: nominal size and pressure rating, body and seat material preference, end connection, operation, and the service medium with temperature. Typical values on this page are benchmark reference ranges; the binding values are confirmed at quotation.
Sample & supply
Supply terms, order quantities and lead time are agreed per order — state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, keep end-face protectors on until installation, and for elastomer- or PTFE-seated executions avoid prolonged outdoor storage — seat compounds age fastest in direct sunlight and freezing conditions.
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