Connection Lift Plug Valve manufacturer in USA 

SVR Global engineers and manufactures Connection Lift Plug Valves engineered for tight shutoff, multi port isolation, and bypass connection duties across process piping networks in the USA. Each valve is built to combine a lifting plug mechanism with a tapered or cylindrical seating arrangement, giving operators a friction reduced, bubble tight isolation device for connection, sampling, venting, and drain points on process lines.

What is a Connection Lift Plug Valve?

A Connection Lift Plug Valve is a quarter turn isolation valve in which the plug is mechanically raised off its seat before rotation and then re-seated by a downward or spring assisted motion once the port aligns with the flow path. This lift and turn action separates the sealing surfaces during travel, which lowers seat wear, torque demand, and scoring on the plug and body seat compared to a valve that rotates while remaining in constant seat contact.

Working Principle:

• The plug is lifted axially off the seat using a cam, lever, or threaded stem mechanism integrated into the valve bonnet.

• With the plug disengaged from the seat, the operator rotates the stem through 90 degrees to align or block the port.

• The plug is lowered back onto the seat, restoring metal to metal or elastomer assisted contact for shutoff.

• The lift turn lower sequence can be manual (lever or gearbox) or automated through a pneumatic or electric actuator fitted with a cam track or grooved sleeve.

Design & Construction Features:

• Tapered or cylindrical plug with a lifting sleeve or cam groove for seat disengagement

• One-piece or two piece body construction depending on line size and pressure class

• Two way, three way, and four way port configurations for diversion, bypass, and sampling duties

• Metal seated or soft seated (PTFE, elastomer sleeve) sealing arrangements

• Adjustable packing gland for stem sealing and torque adjustment

• Anti-blowout stem design to retain the stem under internal line pressure

• Grease fitting or sealant injection port on lubricated variants for seat lubrication and emergency sealing

• Non lubricated variants using a wrapped PTFE or elastomer sleeve for bubble-tight shutoff without periodic lubrication

Technical Specifications:

Materials of Construction:

SVR Global offers Connection Lift Plug Valves in carbon steel, stainless steel (304/316 grades), duplex and super duplex stainless steel, alloy steel, and hardfaced trims for abrasive or erosive service. Plug and seat surfaces can be specified with tungsten carbide, Stellite, or ceramic coating for slurry, catalyst, and particulate-laden media.

End Connection Options:

• Flanged ends (RF, RTJ, FF) per ASME B16.5

• Buttweld ends per ASME B16.25

• Screwed/NPT ends for smaller bore sizes

• Socket weld ends

• Wafer/lug pattern for space-constrained installations

Actuation Options:

• Manual lever operation for quick, frequent cycling

• Gear operated for larger bore, higher torque applications

• Pneumatic actuator (double acting or spring return) for automated ON/OFF or diversion sequencing

• Electric actuator for remote or programmed operation

• Solenoid integrated packages for interlocked sampling or venting sequences

Applications of Connection Lift Plug Valve:

• Sampling and analyzer connection points on process and utility headers

• Bypass lines around control valves and metering skids

• Vent and drain connections on pressure vessels and pipeline sections

• Slurry and catalyst transfer lines in refining and petrochemical units

• Diverting and blending duty in three way and four way port configurations

• Instrument root and manifold isolation on transmitter tie-ins

• Chemical injection and dosing line isolation

• Steam and condensate branch connections in power generation plants

• Pulp, paper, and mining slurry transfer piping

• Marine and offshore topside piping isolation points

• Fertilizer and specialty chemical batch transfer systems

• Water and wastewater treatment sampling and bypass headers

Advantages of SVR Global Connection Lift Plug Valves:

• Reduced seat to plug friction during rotation extends service life under frequent cycling

• Bubble tight shutoff suitable for sampling and analyzer isolation duty

• Multi port configurations reduce the valve count needed at branch and bypass connections

• Hardfaced trims withstand erosive and abrasive process streams

• Compact face to face dimensions simplify retrofit into existing connection points

• Field repairable seat and sleeve arrangements minimize downtime during maintenance

Industry Standards & Compliance:

• SVR Global manufactures Connection Lift Plug Valves in accordance with API 599, MSS SP-78, ASME B16.34, and API 6D design and testing requirements. 

• Valves undergo shell and seat testing per API 598 prior to dispatch, with material traceability, NDE reports, and third party inspection (TPI) available on request for projects across the USA.