Product Introduction

A105 Inverted Lubricated Plug Valve is a shut-off valve designed for high-pressure pipeline systems. It helps address leakage and unstable sealing problems under demanding operating conditions.
Technical Specificastions
|
Structure formation |
BC |
|
Driving way |
Hand-operated |
|
Electric-actuated |
|
|
Design standard |
API 599 API6D |
|
Structure length |
ASME B16.10 |
|
Connecting flange |
ASME B16.5 |
|
Test and inspection |
API598 API 6D |
Note: the size of serial valve connecting flange can be designed according to customers' requirement.
Product Features
Handles Slurry Fluids:
Sealant film keeps plug and seat metal surfaces apart, preventing scoring when handling slurry or contaminated fluids, reducing seal replacement frequency.
Stable Torque:
Inverted design limits torque increase under full pressure, enabling manual lever operation without oversizing actuators or increasing labor effort.
Simplifies Maintenance:
Sealant can be injected while valve remains installed, cutting maintenance downtime and avoiding pipeline shutdown.
Pressure Assisted Seating:
Line pressure pushes plug onto the lower seat, ensuring tight shut-off and reducing operator force during repeated valve cycles.

Applications
Oil and Gas Pipelines:
Crude oil and natural gas transport.
Chemical Processing:
Acids, alkalis, and corrosive chemicals.
Slurry Transport Systems:
Mineral slurries and abrasive liquids.
Steam and High Temperature Lines:
High temperature steam and process fluids.
Water Treatment Plants:
Raw water and wastewater flow control.
Power Generation:
Cooling water and boiler feed lines.
Customization Services
Pressure Class Selection:
Choose from standard or high-pressure classes to match system requirements.
Size Options:
Custom bore and flange sizes from 1/2 inch to 24 inch for pipeline integration.
Material Selection:
ASTM A105 carbon steel or special alloys for corrosive or high-temperature media.
End Connection Types:
Flanged, threaded, or butt-weld ends to fit existing pipeline layouts.
Actuation Options:
Manual lever, gearbox, or automated actuators tailored to operational needs.
Factory Advantages
Industry Experience:
Established in 2008, with over 15 years of continuous focus on plug valve manufacturing and industrial project supply.
Factory Equipment Capability:
Advanced CNC and automated machinery enable precise machining, consistent quality, and high-volume production.
Manufacturing Service:
Support for drawing confirmation, material selection, actuator matching, factory assembly, and pressure testing, with technical and quotation responses within 24 hours.
Full Product Coverage:
Wide size, pressure, material, and temperature ranges to meet different industrial and project requirements.

Official Certificates
Certified to API 6D, API 607, CE, and ISO 9001, our valves meet strict international standards, ensuring safety, reliability, and suitability for critical projects.

FAQ
Q: What warranty is included with the valve?
A: The valve comes with an 18-month warranty to ensure reliable performance.
Q: How often does the valve require maintenance?
A: Routine inspection and periodic sealant replenishment are recommended. With proper sealant use, maintenance intervals can be extended, even in abrasive media.
Q: Are different end connections available?
A: Yes. Flanged, threaded, and butt-weld end connections are available to suit pipeline requirements.
Q: How does this valve compare to conventional plug valves?
A: Compared to standard lubricated plug valves, the inverted design reduces operating torque under pressure, improves sealing reliability, and lowers maintenance frequency in demanding service conditions.
Q: What are your payment and delivery terms?
A: Standard terms are 30% T/T in advance with the balance before shipment, with flexible options available for large or long-term orders.
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