Membrane check valves – 317 irrigation, limited working pressure
Detail Product :
Pressure PFA\/PS in bar θ 60°
Nipple : GJL cast iron epoxy coated
Strainer : galvanised steel
Membrane : EPDM
Options : stainless steel (316L) strainer
Mounting with flexible hoses
Application and special features :
- Operates is any positio
- Low head loss
- Does not generate hammering
- Closing system : EPDM tubuar membrane collapsing towards the center of strainer at the intake
- Sealing guaranteed y the flexible membrane against the machined internal part of the casing
- On membrane check valve, the opening regulated by the elasticity and the thickness of the membrane is very proggressive and can be obtained as a result of a few centimeters of W/C. Because of this, this check valve is particularly suitable for variable flow pumps and pulsating operation
- Flexible or semi-flexible connection
| DN | PFA | PS | Cat | Ref. | UV | ||||
| For internal Ø pipe | mm | water | L1 | L2 | G1 | G2 | |||
| 40 | 30 | 6 | 6 | 6 | x | x | 4.3 | 149B 2535 | 1 |
| 50 | 40 | 6 | 6 | 6 | x | x | 4.3 | 149B 2537 | 1 |
| 110 | 98 | 6 | 6 | 6 | x | x | 4.3 | 149B 2547 | 1 |
| 120 | 108 | 6 | 6 | 6 | x | x | 4.3 | 149B 2548 | 1 |
| 200 | 180 | 6 | 6 | 6 | x | x | 4.3 | 149B 2551 | 1 |
| 250 | 230 | 6 | 6 | 6 | x | x | 4.3 | 149F 013316 | 1 |
| 300 | 276 | 6 | 6 | 6 | x | x | 4.3 | 149B 2553 | 1 |
| Models with defusing | |||||||||
| 200 | 180 | 6 | 6 | 6 | x | x | 4.3 | 149B 2551 D | 1 |
| 250 | 230 | 6 | 6 | 6 | x | x | 4.3 | 149B 2552 D | 1 |
| 300 | 276 | 6 | 6 | 6 | x | x | 4.3 | 149B 2553 D | 1 |