- 2″~60″; DN50~DN1500
- ANSI CLASS 150~900
- Flange
- Worm Gear
- Full Bore
- Trunnion Ball Valve
- Metal Seal Ball Valve
- Blow-Down Valve
- High Temperature
- API 6D, API 608,ASME B16.34, Mss Sp-72; BS5351,ISO
- Industrial Usage
- Metal Hard Sealing Trunnion Ball Valve
- Three Piece Split Type
- Stl,Ni60,Wc,Cr3c2
- SS304,SS316+Stl,Ni60,Wc,Cr3c2
Specification
DN100 PN40 3-Piece Trunnion Mounted Hard Metal Seal BW Ball Valve
|
Name |
Cast steel Trunnion Ball Valve |
|
Size |
2″-60″; DN50-DN1500 |
|
Normal pressure |
Class 150/300/600/900/1500/2500; PN16/PN40/PN64/PN100/PN160/PN250 |
|
Design standard |
API 6D, API 608,ASME B16.34, MSS SP-72; BS5351,ISO17292,EN13709 |
|
Fire safe design |
API607,API 6FA |
|
End flange |
ANSI B 16.5,ASME B16.47; EN1092,DIN2543~DIN2547,AS2129 |
|
Face to Face |
ANSI B 16.10,API 6D; DIN3202,EN558-1,EN12982,ISO 5752 |
|
Top flange |
ISO 5211 |
|
Test standard |
API598,API6D; DIN3230,EN12266,ISO 5208 |
|
Suitable temperature |
-29~250°C |
|
Medium |
Fresh water, sewage, sea water, air, vapor, food, medicine, oils, alkalis, salt etc. |
|
Operation |
Hand Operated,Gear Operated, Electrical Actuated, Pneumatic Actuated |
Structure
|
– Full Port or Reduce Port |
|
– Split Body |
|
– Bolted Bonnet with spiral-would gasket |
|
– Fire Safe Design |
|
– Anti-static Design & Blow-out proof stem |
|
– Double seat structure |
|
– Butt Weld Ends to ASME B16.25; DIN 3239,EN12627 |
|
– Flanged Ends to ASME B16.5; EN1092,DIN2543~DIN2547 |
Main Part & Materials
|
Part Names |
Part Materials |
||||||
|
Body |
WCB/A105 |
LCB/LF2 |
CD4MCuN/F51 |
CF8/F304 |
CF8M/F316 |
CF3/F304L |
CF3M/F316L |
|
Bonnet |
WCB/A105 |
LCB/LF2 |
CD4MCuN/F51 |
CF8/F304 |
CF8M/F316 |
CF3/F304L |
CF3M/F316L |
|
Ball |
A105+ENP |
SS304 |
F51 |
SS304 |
SS316 |
SS304L |
SS316L |
|
Stem |
F6a |
F304 |
F51 |
F304 |
F316 |
F304L |
F316L |
|
Trunnion |
F6a |
F304 |
F51 |
F304 |
F316 |
F304L |
F316L |
|
Bearing |
Cu |
|
|
|
|
|
|
|
Antistatic spring |
A313-304 |
A313-304 |
A313-316 |
A313-304 |
A313-316 |
A313-316 |
A313-316 |
|
Seat Retainer |
13%Cr |
SS304 |
F51 |
SS304 |
SS316 |
SS304L |
SS316L |
|
Seat Spring |
A313-304,A313-316,Inconel X-750 |
||||||
|
Seat Seal Ring |
Ni60,STL,WC |
||||||
|
Packing |
Graphite |
||||||
|
Gasket |
SS304+Graphite/SS316+Graphite |
||||||
|
Bolts/Nuts |
B7/2H |
L7/4 |
B8M/8M |
B8/8 |
B8M/8M |
B8/8 |
B8M/8M |
|
Suitable Medium |
W.O.G etc. |
HNO3, CH3OOH etc. |
|||||
|
Suitable Temperature |
-29~250 °C |
-29~250°C |
-29~250 °C |
-29~250 °C |
-29~250 °C |
-29~250 °C |
-29~250 °C |
Product Overview
I. Product Overview
NEWWAY 3-piece trunnion mounted hard metal seal butt-weld (BW) ball valve is a high-performance flow control device engineered for extreme industrial conditions. Its 3-piece split structure enables easy maintenance, while the trunnion-mounted ball ensures stability under high pressure. Hard metal sealing (metal-to-metal) withstands abrasive media and high temperatures, complemented by butt-weld connections for leak-tight integration. Constructed from robust materials (carbon steel, stainless steel), it complies with API 6D and ASME standards, making it ideal for flow control in oil, gas, chemical, and power sectors where reliability and durability are critical.
II. Key Attribute Parameters
Size Range: 2″~24″ (DN50~DN600), covering small to large-diameter pipelines to meet flow requirements in process loops, transmission lines, and high-pressure systems.
Pressure Rating: PN16~PN420 (Class 150~2500), with PN40 (6.4MPa) as a common specification, suitable for medium to ultra-high pressure applications.
Temperature Range: -46℃~450℃, with material upgrades (e.g., alloy steel) enabling operation up to 550℃ for high-temperature steam or thermal fluid systems.
Material Configuration:
Body: Carbon steel (WCB), stainless steel (316), or duplex stainless steel, selected for corrosion resistance and structural strength.
Ball & Stem: 316 stainless steel or Stellite-coated alloys, ensuring wear resistance and compatibility with abrasive media.
Seal: Hard metal-to-metal (316 stainless steel/Stellite), with spring-loaded seats to compensate for thermal expansion and wear.
Connection Type: Butt-weld (BW per ASME B16.25), providing a permanent, leak-tight joint that eliminates flange-related leakage risks, ideal for high-pressure or vibration-prone systems.
Operation: Manual (gear), electric, or pneumatic, with gear-operated models reducing torque by 60% for easy handling of large-diameter valves.
Standards Compliance: Design per API 6D, ASME B16.34; testing per API 598; fire-safe certification per API 607, ensuring compatibility with global industrial standards.
III. Structural Features
3-Piece Split Body: The valve body splits into three sections (two end caps and a middle section) connected by bolts, allowing easy disassembly for in-line maintenance (ball, seat, or stem replacement without removing the valve from the pipeline). This reduces downtime by 50% compared to 1-piece or 2-piece valves.
Trunnion-Mounted Ball: The ball is supported by upper and lower trunnions, distributing pressure loads to prevent deformation under high pressure. This design eliminates “ball blowdown” (displacement due to flow force), ensuring stable operation even in pressure surges—critical for Class 600+ systems.
Hard Metal Sealing: Precision-lapped metal seats and ball surfaces (Ra ≤0.8μm) form a bubble-tight seal (ANSI FCI 70-2 Class V). Spring-loaded seats automatically compensate for thermal expansion and wear, maintaining tightness across temperature cycles and long-term use.
Butt-Weld Connection: Welded joints (full penetration) create a seamless transition between valve and pipeline, minimizing pressure drop and eliminating flange gasket leakage risks. Suitable for buried pipelines or systems with strict leakage requirements (e.g., toxic or flammable media).
Safety Enhancements: Anti-blowout stem (prevents ejection under high pressure), anti-static device (dissipates static to avoid sparks), and<