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General Catalog 949-01
SV 91 - SV 95
SV 91 - SV 95
Aerating valves and cone check valves
SV 91 - SV 95
SV 91 - SV 95

  • Materials PVC, PPH / seals FPM
  • From DN 10 to DN 100
  • SV 91 with free cone
  • SV 95 with PTFE coated spring actuated cone
APPLICATIONS

SV 91 and SV 95 – Protection against over-riding pressure

 When tank is filled by liquid, the air is compressed and pushes the cone that exhausts air. The tank is protected against exceeding pressure and sealed when the pressure drops. (Fig. A, Fig. C)

SV 95 – Protection against vacuum and overflow

When the tank is emptying the resulting atmosphere is under vacuum. The atmospheric pressure is higher than the pressure inside, pushing the cone of SV 95 valve and air can enter inside the tank. (Fig. B). This valve protects the environment of pouring out fluid in case of overfilling.

SV 91 – Protection against pressure over-riding and in case of overfilling

SV 91 aerating valve (Fig. D) lets the air circulates between inside and outside of the tank to protect it against vacuum and pressure over-riding. An excess of liquid when filling in the tank, pushes the cone on its seat and avoid pouring out fluid to contaminate outside. (Fig. D).

SV 91 and SV 95 – Protection against siphoning and return flow protection

Aerating valves SV 91 and cone check valves SV 95 in horizontal pipe mounting are useful to avoid siphoning and to assure the non-returning flow. (Fig. E).

 

MATERIALS

Body: PVC or PPH or PVDF on request

Sealing: FPM or EPDM on request

Cone: PVC or PPH or PVDF on request, (same as body material)

open 0.025 bar

Spring: 1.4401 stainless steal, PTFE coated

open 0.06 bar

Fitting: PVC solvent sockets – PPH fusion sockets

General Catalog 949-01
10/04/2018 09:08
Aerating valves and cone check valves
SV 91 - SV 95
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