| Model | Connection Size | Connection Type |
|---|---|---|
| R9109 | 1½" (38.1 mm) BSP Female | Threaded |
| R9109 (I) | 2" (50.8 mm) BSP Female | Threaded |
| R9109 (II) | 1½" (38.1 mm) ANSI Class #150 | Flanged |
| R9109 (III) | 2" (50.8 mm) ANSI Class #150 | Flanged |
Body material, working pressure, gas compatibility and NRV function are identical across all four variants — only the end connection differs. Mention the model / connection size you need when enquiring.
The Vanaz R9109 series is a range of high-capacity flame arrestors with an integrated non-return valve (NRV), engineered for heavy-duty gas distribution manifolds. It stops flashback propagation and blocks reverse flow before it reaches upstream storage, protecting the gas line from explosion hazards. The body is Cast Mild Steel / Carbon Steel with a brass trim assembly and a stainless steel ribbon element pack. The series is available in four end-connection options — 1½″ or 2″ BSP threaded, and 1½″ or 2″ ANSI Class #150 flanged — see the table below. Working pressure is rated up to 17–19 Kg/cm² (bar) on LPG and Natural Gas. Manufactured by Vanaz Engineers Ltd, Pune.
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