Membrane check valves – 407 boosting units, vacuum pumps, compressed air
Description :
These valves are designed for intallations that generate significant water hammer. They are very reliable and quiet (no mechanical moving parts, anti-incrustation closing system and seat). Ideal for booster pumps, sprinkler systems, motor or electric pump units and compressed air circuits. Alternating operation.
- Operates in any position
- Low had loss
- Does not generate hammering
- Closing systems : flexible membrane (thick elastomer disc) held in its center on a metal sat consisting of a grid (flow equivalent to the minimal selection)
- Sealing ensured by self-closing membrane
- On membrane chck valves, the opening regulated by the elasticity and the thickness of the membrane is very progressive 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 pulsatory operation
Detail Product :
PRESSURE PFA/PS in bar θ 60°
CASING : GJL cast iron epoxy coated
SEAT : DN40 to 80 : Stainless Steel DN100 to 200 : PA (polyamid) coated steel
MEMBRANE : (natural rubber)
SEAL : EPDM
| DN | PFA | PS | Cat | Réf. | UV | ||||
| “ | mm | water | L1 | L2 | G1 | G2 | |||
| 11/2 | 40* | 16 | 16 | 16 | 16 | 16 | 1 | 149B 2164 | 1 |
| 2 | 50* | 16 | 16 | 16 | 16 | 16 | 1 | 149B 2165 | 1 |
| 21/2 | 65* | 16 | 16 | 16 | 15 | 16 | 1 | 149B 2166 | 1 |
| 3 | 80* | 16 | 16 | 16 | 12 | 16 | 1 | 149B 2167 | 1 |
| 4 | 100 | 16 | 16 | 16 | 10 | 16 | 1 | 149B 2168 | 1 |
| 5 | 125 | 16 | 16 | 16 | 0.5 | 16 | 1 | 149B 2169 | 1 |
| 6 | 150 | 16 | 13 | 16 | 0.5 | 16 | 1 | 149B 2170 | 1 |
| 8 | 200 | 10 | 10 | 10 | 0.5 | 10 | 1 | 149B 2237 | 1 |