The Q41F is a flanged floating ball valve for quarter-turn isolation in industrial piping. The ball is held between its seats rather than supported by trunnions; line pressure presses it toward the downstream seat to form the seal.
The cast steel configuration shown below combines a WCB body with PTFE seats. The specification and dimensional table provide the main details for comparing this model with your piping requirements.
Válvula de esfera flutuante Q41F 150LB- Aço fundido WCB - API ANSI
Série: Q41F floating ball valve
Corpo: Aço fundido WCB
Conexão: flangeado
Assento: PTFE
Tamanho nominal: NPS 1/2–8
| Modelo de válvula de esfera (API) | Pressão nominal (MPa) | Teste de resistência à pressão(MPa) | Selo de pressão de teste(MPa) | Temperatura | Faixa de uso |
|---|---|---|---|---|---|
| Q41F-150LB | 2.0 | 3.0 | 2.2 | -29~150 ℃ | água, gás, óleo |
Floating Ball Construction
The floating ball moves slightly under line pressure, bringing it into contact with the downstream seat. PTFE seats provide the sealing surfaces around the ball, while the quarter-turn stem connects it to the operator.
Flanged ends allow the valve to be bolted into the pipeline and removed for maintenance. The dimension table below supports installation planning and comparison with existing valves.
Farpro supplies Q41F floating ball valves for project procurement and replacement work. Send us your valve specification or required size and quantity for a quotation.