3-Way Plug Valve
Multi-port plug valve for diverting, mixing, or directing flow between two or three pipeline circuits.
Technical Specifications
| Type | 3-Way (T-Port / L-Port) |
| Size Range | 1/2" to 6" (15 mm to 150 mm) |
| Body Materials | Carbon Steel, Stainless Steel 316 |
| Plug Material | SS316, PTFE Sleeved |
| End Connections | Flanged, Screwed |
| Pressure Rating | PN16, Class 150 |
| Standards | API 599,MSS SP-78 |
| Lead Time | Ex-stock Gujarat: Same day | Standard items: 2–4 weeks | Exotic alloys: 8–12 weeks |
Applications
Flow diversion, mixing, sampling lines, process plants
About the 3-Way Plug Valve
The 3-way plug valve performs diversion and switching functions in a single compact quarter-turn body, using a plug machined with a T-shaped or L-shaped through-port. A T-port plug connects all three ports simultaneously when positioned at the 45° mid-position, enabling flow mixing or splitting between an inlet and two outlets (or vice versa), and in the two 90° positions connects only the inlet to one selected outlet. An L-port plug connects only one pair of adjacent ports at a time, functioning as a pure diverter that can switch flow from one circuit to another but cannot mix.
Plug valve multiport designs offer a significant advantage in applications where the flow passages carry viscous or particle-laden fluids: the plug bore is larger relative to the port opening than in ball valve designs, reducing the risk of clogging at the junction of the T or L port. Lubricated plug 3-way valves can handle H2S-containing gas service where PTFE-sleeved designs would degrade. For clean chemical service, PTFE-sleeved 3-way plug valves are maintenance-free with no sealant injection required. Vajra Industrial Solutions supplies 3-way plug valves in lubricated and sleeved configurations in Carbon Steel and SS316, 1/2" to 6", to API 599 and MSS SP-78.
Where It's Used
Key industries and applications for the 3-Way Plug Valve
Gas gathering and distribution
lubricated Carbon Steel 3-way plug valves for switching gas flow between two export routes, diverting compressor suction between different field headers, or bypassing inline metering; bi-directional metal-to-metal sealing suitable for H2S-containing gas
Sampling line manifolds
SS316 PTFE-sleeved 3-way plug valves for diverting process sample flow between an online analyser and a drain, or for switching between two sample sources to a single analyser; compact screwed body for sample system tubing
Tanker and tank farm loading arms
lubricated Carbon Steel 3-way plug valves for switching loading arm suction between shore tanks; T-port allows flush-through cleaning of the loading arm circuit without disconnecting hoses
Chemical reactor feed switching
SS316 PTFE-sleeved 3-way plug valves for switching reagent feeds between two reactors from a single supply header; quarter-turn switching is fast and simple under automated control
Heating and cooling circuit selection
Carbon Steel or SS316 lubricated 3-way plug valves for switching process jacket circuits between steam heating and cooling water, or between two heat sources; rugged metal-to-metal sealing handles thermal cycling
How to Choose the Right 3-Way Plug Valve
Select a 3-way plug valve when you need to divert or mix two separate streams through a single valve body, particularly for gas service, abrasive fluids, or viscous media where ball valve designs would clog or wear rapidly. Choose T-port for mixing or splitting applications; L-port for pure diversion (switching one inlet between two outlets without mixing). For clean chemical service, specify PTFE-sleeved for maintenance-free operation; for gas and sour service, specify lubricated with H2S-resistant sealant.
Popular Configurations
Most commonly ordered specifications for the 3-Way Plug Valve
Frequently Asked Questions
About 3-Way Plug Valve - ordering, specs, delivery & compliance
What standards does the 3-Way Plug Valve comply with?+
Our 3-Way Plug Valve complies with API 599, MSS SP-78. All products are manufactured to international standards and come with full material test reports (MTR), dimensional inspection reports, and hydrostatic test certificates on request.
What materials are available for the 3-Way Plug Valve?+
The 3-Way Plug Valve is available in Carbon Steel, Stainless Steel 316. Material selection depends on your process fluid, temperature, pressure, and corrosion requirements.
What is the delivery lead time for 3-Way Plug Valve?+
Standard stock sizes are available for immediate dispatch from our Vadodara warehouse. Custom sizes and special materials typically have a lead time of 2–6 weeks depending on specifications. We serve customers across India within 1–7 business days and export to the Middle East, Southeast Asia, Europe, and the Americas with full export documentation.
Can I get a custom 3-Way Plug Valve for a specific application?+
Yes. Vajra Industrial Solutions supplies custom-engineered plug valves for specific process conditions. Submit your technical requirements - including pressure class, temperature range, fluid type, end connections, and any special trim or coating needs - via our RFQ form or WhatsApp, and our engineering team will respond within 24 hours.
What pressure ratings are available for the 3-Way Plug Valve?+
The 3-Way Plug Valve is available in pressure ratings of PN16, Class 150. Higher-pressure classes are available for critical service applications in oil & gas, power generation, and chemical processing.
How do I request a quote for the 3-Way Plug Valve?+
You can request a quote by clicking the "Request Quote" button on this page, filling out our RFQ form at vajravyuh.com/rfq, emailing us at sales@vajravyuh.com, or WhatsApping us directly at +91-9979774557. Please include quantity, size, pressure class, material grade, and end-connection type for the fastest response.
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