2″ Gas Ball Valve, Fireproof Explosion-Proof With Gas Special Sealing Seat
2″ gas ball valve features explosion-proof flame retardant structure & gas dedicated sealing, meets EN331 & API 607, safe shut-off for natural gas pipeline systems.
Description
The 2‑inch gas ball valve is part of the DN50 medium‑bore product line, engineered specifically for combustible gas pipelines—including natural gas, LPG, and biogas. Its key functions are to enable safe gas flow control and to provide emergency shutoff in hazardous situations.
The valve incorporates a fire safe explosion‑proof stem assembly that includes an anti‑static conductive design to dissipate static charge generated by ball friction, effectively eliminating ignition risks. In addition, a gas‑resistant NBR sealing seat—specially formulated to withstand swelling caused by hydrocarbon media—ensures long‑term leak‑tight performance, meeting the stringent reliability demands of gas distribution systems.
Basic Technical Specifications
| Parameter | Detail |
|---|---|
| Nominal size | NPS 2″ (DN50) |
| Standards | EN331, API 607 fire‑safe certification, ISO 5208 (Class A zero leakage) |
| Pressure ratings | Class150, PN16 |
| Body materials | 304 stainless steel, forged brass, WCB carbon steel |
| Sealing materials | Gas‑grade NBR, modified RPTFE |
| Safety features | Explosion‑proof stem, anti‑static device, optional locking handle |
| Suitable media | Natural gas, LPG, biogas, town gas |
The valve has passed API 607 fire‑safe testing: even if external fire destroys the soft seal, an internal metal secondary sealing structure can still close and prevent further leakage, thereby containing fire spread. Its quarter‑turn (90°) quick‑action design enables gas flow to be interrupted within seconds during emergencies. An optional locking handle prevents unauthorised operation, reducing human error risks. Both flanged and NPT threaded connections are available to accommodate global installation preferences.
This ball valve is widely adopted in city gas distribution networks, pressure‑regulating stations, boiler house supply lines, and commercial kitchen gas systems. For example, a residential gas distribution station in Buenos Aires, Argentina (Av. Rivadavia 7850, CABA C1408AAS, Buenos Aires, Argentina) has extensively installed the 2″ gas ball valve on its household main supply lines.
The explosion‑proof and flame‑resistant design effectively copes with network pressure fluctuations, while the gas‑specific seals eliminate any trace of permeation or leakage, significantly reducing the probability of domestic gas‑related accidents. Over many years of continuous service, the valve has maintained excellent gas‑tightness performance.
Every unit undergoes strict leak and explosion‑proof testing prior to shipment, and holds CE and DVGW gas safety certifications. Additional customisation options include locking devices and pneumatic actuation for integration into smart gas pipeline upgrades.
