Elite Flow Control’s Fully Welded Trunnion Mounted & Extended Stem Ball Valves are purpose-engineered for long-distance pipeline transmission, underground installation, and remote location service where absolute reliability, zero leakage, and minimal maintenance are non-negotiable. Available in sizes from 2″ to 48″ (DN50 to DN1200) and pressure classes from CL150 to CL2500, these valves represent the pinnacle of large-bore, high-integrity flow isolation technology.
The fully welded body construction eliminates external bonnet and body joint leak paths entirely – a critical advantage in buried pipeline and environmentally sensitive applications where any fugitive emission is unacceptable. The trunnion mounted ball design fixes the ball in position, transmitting pipeline loads directly to the valve body rather than the seats – significantly reducing operating torque and extending seat life, even at high pressure differentials.
The extended stem configuration is specifically designed for underground or remote installations, allowing all operational functions – including open/close actuation, stem sealant injection, seat sealant injection, drain and vent connections – to be performed from above ground through extended connecting pipes firmly secured to the stem protective cover. A complete by-pass system is integrated as standard, ensuring safe and efficient pressure equalisation before valve operation.
The anti-blow-out stem design provides a critical safety barrier, preventing stem ejection under any operating or emergency condition. Fire safety design compliance ensures the valve maintains its sealing integrity even under fire exposure conditions – making these valves fully qualified for the most demanding onshore and offshore pipeline applications across oil & gas, natural gas transmission, water transmission, and petrochemical services.
Key Features:
- Fully welded body and end – zero external leak paths
- Full bore design for pigging and minimum pressure drop
- Trunnion mounted ball for low operating torque
- Extended stem for underground and remote location operation
- Complete by-pass system integrated as standard
- Stem and seat sealant injection for in-service maintenance
- Anti-blow-out stem for maximum safety
- Fire safety design compliant
- Transition pups available on request
- Size range: 2″ ~ 48″ (DN50 ~ DN1200)
- Pressure classes: CL150 ~ CL2500
- Materials to ASTM & API 5L standards
Model No.: EFC-02BV1B4 Size: 2″ ~ 48″ (DN50 ~ DN1200) Class: CL150 ~ CL2500
DESIGN FEATURES
Transition Pups
- Transition pups are supplied on request for welded end valves
Extended Stem
- Valves installed underground or in remote locations can be operated with an optional extended stem
- All drain, vent and emergency sealant connections can be operated using extended connecting pipes firmly attached to the stem protective cover
Core Design Features
- Full Welded Body and End
- Full Bore
- Trunnion Mounted Ball
- Low Torque
- Underground Installation Capable
- Stem and Seat Sealant Injection
- Fire Safety Design
- Anti-Blow Out Stem
PARTS & MATERIALS LIST
| No. | Part Name | Sample Materials |
|---|---|---|
| 1 | Valve | ASTM A105 |
| 2 | Pups | API 5L GR.B |
| 3 | Extend Pipe | Carbon Steel |
| 4 | Blow Pipe | ASTM A106 |
| 5 | Drain Valve | Carbon Steel |
| 6 | Lubricant Fitting | Carbon Steel |
| 7 | Connection Valve | ASTM A105 |
| 8 | Gear | Assembly |
| 9 | Tee | Carbon Steel |
| 10 | Lift Lug | Carbon Steel |
| 11 | Lubricant Pipe | ASTM A106 |
| 12 | Drain Pipe | ASTM A106 |
| 13 | Blind Flange | ASTM A105 |
| 14 | By-Pass Valve | ASTM A105 |
| 15 | By-Pass Pipe | ASTM A106 |
| 16 | Elbow | Carbon Steel |
Model Denote: EFC = Elite Flow Control | 02 = Size in inch | BV = Ball Valve | 1 = 150Lb | B = BW End | 4 = Trunnion, Welded Body
