Shinjo Valve is a China ball valve manufacturer and supplier offering a full range of ball valves — floating ball, trunnion mounted, and V-port designs — in sizes from 1/2″ to 40″ (DN15–DN1000), pressure classes from PN20 to PN420 (Class 150 to 2500 LB), and working temperatures from -196°C to +200°C depending on the model. Body materials cover grey cast iron, ductile iron, cast steel WCB, stainless steel CF8/CF8M, forged steel, aluminium bronze, titanium, and 904L special alloy.
| Item | Range |
|---|---|
| Size Range | 1/2″ – 40″ (DN15 – DN1000) |
| Pressure Rating | PN20 – PN420 / Class 150 – 2500 LB |
| Working Temperature | -196°C – +200°C (model dependent) |
| Body Materials | Grey cast iron (GG25 / FC200), ductile iron (GGG40 / FCD400), cast steel (WCB), stainless steel (CF8 / CF8M, 304 / 316), forged steel, aluminium bronze (C95800), titanium (TA2), 904L |
| Ball Designs | Floating ball, trunnion mounted, V-port; full bore or reduced bore |
| End Connections | Flanged (DIN / ANSI / JIS / EN 1092), threaded (NPT / BSP), wafer type, butt-weld ends, RF flange |
| Actuation | Lever, pneumatic (double acting / single acting with spring return) |
| Design Standards | API 6D, ASME B16.34, DIN 3357, JIS B2002, GB/T 12237, EN ISO 17292, BS 5351 |
- Fire Safe Design and Anti-static Design
- Anti-blowout stem with adjustable stem packing
- Low Emission Design, fugitive emissions compliant
- Cavity pressure relief to avoid cavity overpressure
- Emergency built-in stem and seat sealant injection system
- Extended bonnet and insulated panel design for cryogenic service
- ISO 5211 mounting flange for actuator mounting
- NACE MR0175 compliant options
- Full port or reduced port options
Three designs: floating ball (cast iron, wafer pattern, and 904L models), trunnion mounted (three piece DBB ball valve for high pressure classes up to 2500 LB), and V-port ball valve for modulating duty with pneumatic actuation.
Yes. The low temp (cryogenic) ball valve is designed for media from -40°C down to -196°C, serving cryogenic fluids such as liquefied natural gas (LNG), liquid nitrogen (LN2), liquid oxygen (LOX), and liquid argon (LAr). The valve undergoes special cryogenic treatment to prevent deformation and leakage at low temperature, and the extended bonnet keeps the packing box away from the cryogenic zone to maintain packing seal performance.
DBB stands for Double Block and Bleed. The three piece trunnion mounted ball valve provides both DBB and DIB (Double Isolation and Bleed, DIB-1 or DIB-2) functionality, with double piston effect, self relieving seats and a pressure relief valve to protect the body cavity from overpressure.
Grey cast iron (GG25 / FC200), ductile iron (GGG40 / FCD400), cast steel WCB, stainless steel CF8 / CF8M (304 / 316), forged steel, aluminium bronze, titanium, and 904L special alloy. Seats are typically PTFE; the V-port valve uses a 304 seat with hard alloy overlay.
Design and manufacture per API 6D, ASME B16.34, DIN 3357, JIS B2002, GB/T 12237, EN ISO 17292 and BS 5351. Face-to-face and flange dimensions per ASME B16.10 / B16.5, DIN 3202, EN 1092-1, JIS B2212. Testing per API 598, API 6D, EN 12266-1, ISO 5208 and DIN 3230.
