Carbon Steel Fully Welded Ball Valve, ST 37.8, 16 IN, 300 LB

Key Specifications / Features

Model No.: JSC-240228-FWBV-01 Hits: 5

Discover our fully welded carbon steel ball valves, manufactured to DIN EN 10217-2 ST 37.8 standards. With a robust 16-inch (DN400) size and a Class 300 LB (PN25) rating, these valves are designed for high-pressure applications. Featuring a trunnion design and equipped with soft seats, they ensure reliable sealing and minimal maintenance. Additionally, they offer double block and bleed functionality, enhancing safety and performance in critical processes.
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Detail Information

Fully Welded Ball Valve

Valve description: Ball valve, trunnion type, fully welded, soft seat, double block and bleed

Body material: DIN EN 10217-2 ST 37.8
Ball material: Stainless Steel 304
Nominal diameter: DN400 (16 Inch)
Nominal class: PN25 (Class 300 LB)
End connection: BW with hub
Face to face: MFR
Mode of operation: Gear 
Test and inspection: API 598

The complete valve body and weld ends are welded together. There are no potentially leaking flanged or bolted connections on the valve body. The blowout-proof stem is externally sealed with two O-ring seals and a graphite reinforced PTFE washer pressed on by the media pressure. System safety is ensured by the possibility of replacing the upper O-ring seal up to DN 50 and 2 O-ring seals DN65 and bigger, 3 O-ring for DN350 and bigger.

We manufacture the ball valves below:
Fully Welded End Ball Valve
District hot water welded ball valve
One-piece ball valve with thread, reduced bore, full port
One-piece ball valve with thread and weld end, reduced port, full bore
One-piece ball valve with weld ends, reduced port, full port
One-piece ball valve with flange, reduced bore, full bore
One-piece ball valves with extended spindle, reduced port, full port
One-piece ball valve with flange, reduced bore, full bore


Size Range: 2 Inch – 56 Inch (DN50-DN1400)
Pressure Range: Class 150 LB - 2500 LB (PN16-PN420)


Design/Manufacture: MFG, API 6D, ASME B16.34, DIN 3357, EN 13709, GB/T 12237, BS 5351
Face to Face Length (Dimension): MFG, API 6D, ASME B16.10, EN 558-1, DIN 3202, JIS B 2002
Flanged Dimension: ASME B16.5, EN 1092-1, BS 4504, DIN 2501
Flanged to ASME B16.5 (2 Inch-24 Inch) and ASME B16.47 Series A / B (26 Inch and above) Clamp / Hub ends on request.
Butt Welding Ends: ASME B16.25, EN 12982, GB/T 12224
Testing: API 598, API 6D, EN 12266-1, EN 1074-1, ISO 5208


Fully welded body
Floating or Trunnion Mounted Ball
Spring energized seats
PTFE+C soft seated
Full or reduced bore
Flanged or welded ends
Blowout proof stem
Self-lubricated bearings
Self-relieving Seat
Bi-directional Seating


Carbon Steel:
ASTM A105, Steel 20#, ST37.0, ST37.8, P235GH (1.0345), P355 NL1 (1.0566)/GP240GH (1.0619)

Stainless Steel: 
SS 304, SS 316, SS 420; X5CrNi18-10 (1.4301)


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