China Customized Orbit / Lift Type DBB Plug Valves Manufacturers, Suppliers and Factory

Product Introduction

Orbit / Lift Type DBB Plug Valves are engineered for high-integrity isolation in demanding industries such as oil & gas, petrochemical, LNG, and pipeline transportation systems. By combining Double Block and Bleed (DBB) functionality with an advanced lift-and-rotate plug design, these valves significantly reduce operating torque, eliminate seat friction, and ensure bubble-tight sealing under severe high-pressure and high-temperature conditions.
Fully compliant with international standards including API 6D and API 6A, our valves are the trusted choice for engineering contractors (EPCs) and global procurement managers who refuse to compromise on operational safety.

High Temperature Orbit Type Plug Valve
The High Temperature Orbit Type Plug Valve is engineered for demanding industrial applications where conventional plug valves fail due to extreme thermal conditions. Featuring an advanced

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Pneumatic Actuated Lift Type DBB Valve
The Pneumatic Actuated Lift Type DBB Plug Valve utilizes an advanced lifting and rotating plug mechanism to achieve high-integrity, friction-free sealing between upstream and downstream pressure

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Gear Operated Orbit Type DBB Plug Valve
The Gear Operated Orbit Type Double Block and Bleed (DBB) Plug Valve is a high-performance quarter-turn isolation valve engineered for critical pipeline and process applications requiring absolute

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Stainless Steel Orbit DBB Plug Valve
The Stainless Steel Orbit Double Block and Bleed (DBB) Plug Valve is specifically engineered for critical isolation applications where zero leakage, low operating torque, and long service life are

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High-Pressure Orbit Type DBB Valve
The High-Pressure Orbit Type DBB (Double Block and Bleed) Valve is engineered for critical pipeline isolation where zero-leakage integrity, high-pressure resistance, and long-cycle operational

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Orbit Type DBB Plug Valve
This eliminates rubbing friction, drastically reduces operating torque, and prevents premature sealing wear, ensuring zero-leakage performance in critical applications.

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Quick Project Spec Check

Zero Leakage

100% bubble-tight sealing performance, fully verified via API 598 testing.

Zero Friction, Long Life

Unique "Lift-Rotate-Reseat" mechanism eliminates seat wear during cycling.

Severe Service Ready

Designed to handle extreme temperatures from -46°C to +450°C and pressures up to ASME Class 2500.

Global Compliance & Inspection

Pre-certified to API 6D, API 6A, and API 607 (Fire Safe). Fully supports TÜV, BV, and SGS third-party inspections.

Technical Specifications

Parameter	Range / Specification
Size Range	1" – 24" (DN25 – DN600+)
Pressure Rating	ASME Class 150 / 300 / 600 / 900 / 1500 / 2500
Temperature Range	-46°C to +450°C (depending on material selection)
Body & Bonnet Materials	Cast: WCB, WCC, CF8, CF8M, Duplex, Super Duplex Forged (High Pressure): A105, LF2, F316, F51, F53, F55
Trim & Seat Materials	PTFE, RPTFE, Devlon, or Metal-to-Metal Seated (Stellite overlay available)
End Connections	RF, RTJ Flanged, Butt Weld (BW)
Operation	Manual Handwheel, Bevel Gearbox, Electric, Pneumatic, or Hydraulic Actuation
Design Standards	API 6D, API 6A, ISO 17292, ASME B16.34
Fire Safe Certification	API 607 / API 6FA
Testing & Quality Standard	API 598, ISO 5208

Advantages Over Conventional Plug Valves

Feature	Our Orbit Lift DBB Plug Valve	Traditional Lubricated Plug Valve
Operating Torque	Extremely Low (No seat friction during rotation)	High (Requires constant sealing grease)
Seal Wear	Minimal (Zero rubbing contact)	High (Suffer from continuous abrasion)
Leakage Risk	Zero / Bubble-Tight	Moderate (Prone to packing/seat degradation)
Maintenance	Virtually Maintenance-Free (No sealant injection needed)	High (Requires regular grease replenishment)
Lifecycle Cost	Low (Extended intervals between overhauls)	High (Frequent parts replacement)

Critical Applications

Our Orbit-type plug valves are field-proven and actively deployed in hazardous, high-frequency cycling environments globally:

Oil & Gas Midstream

Transmission pipelines, scraper launcher/receiver traps, and metering stations.

Refining & Petrochemical

Catalyst switching, hydrocracker isolation, and severe corrosive media handling.

LNG & Cryogenics

LNG liquefaction storage, regasification terminals, and low-temperature isolation.

Clean Energy

Hydrogen (H2) transport, CO2 capture systems, and high-pressure gas networks.

Testing, Quality Control, and Traceability

We enforce a zero-defect quality policy. Every single valve undergoes a rigorous testing sequence before leaving our facility:

Pressure Testing: Shell and seat pressure testing (hydrostatic & pneumatic) per API 598.

Material Traceability: MTC (Material Test Certificates) according to EN 10204 3.1 provided with every shipment.

Nondestructive Testing (NDT): Radiographic (RT), Ultrasonic (UT), Magnetic Particle (MT), and Dye Penetrant (PT) testing available based on project specifications.

Third-Party Friendly: We fully welcome and cooperate with international inspection bodies including SGS, Bureau Veritas (BV), TÜV Rheinland, and DNV.

Optional Configurations & Customization

To seamlessly integrate into your specific piping layout or automation network, we offer:

Custom actuator automation (Electric / Pneumatic) integrated with Emergency Shutdown (ESD) systems.
Extended stems for buried pipeline or underground service.
Cryogenic extension bonnets for LNG applications.
Locking devices to ensure secure Lockout/Tagout (LOTO) during maintenance.

FAQ

Q: 1What is the main benefit of a Double Block and Bleed (DBB) plug valve?

A: A DBB valve provides two distinct sealing barriers within a single valve body along with a bleed port. This allows operators to safely isolate upstream and downstream pressure, then drain/bleed the cavity to verify seal integrity before starting maintenance work.

Q: Why is the "Lift-and-Rotate" design superior for high-pressure systems?

A: In traditional valves, high pressure forces the plug tightly against the seat, creating massive friction and wear during opening and closing. The Orbit lift design lifts the plug before turning it, eliminating this friction entirely. This results in minimal wear and allows for smaller, more cost-effective actuators.

Q: Do these valves require regular lubrication?

A: No. Unlike standard lubricated plug valves that rely on regular grease injection to maintain a seal and prevent jamming, our lift-type DBB valves utilize mechanical wedging and precise material pairings, making them virtually maintenance-free.

Find professional orbit / lift type dbb plug valves manufacturers and suppliers in China here! With abundant experience, we warmly welcome you to buy high quality orbit / lift type dbb plug valves made in China here from our factory. Customized orders are welcome.

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