Industrial Grey PVC-U Pipe And Fittings Industrial Grey PVC-U Valves
PVC-U Ventilation Valve Type 591
• Low investment cost • Long lifetime of valves
• Suitable for use as an air bleed valve • Assist in preventing run dry situations • Also can be used on tanks or pipes to prevent negative pressures / vacuum • PVC body with PP float
PVC-U Ventilation Valve Type 591
PP-H Cone / No Spring
SIZE PN 1/2” 16 3/4” 16
EPDM
FPM
161 591 102 161 591 103 161 591 104 161 591 105 161 591 106 161 591 107 161 591 108 161 591 109
161 591 112 161 591 113 161 591 114 161 591 115 161 591 116 161 591 117 161 591 118 161 591 119
1” 16
1.25” 16
1.5” 16
2” 16
2.5” 16
3” 16
4” 16
161 591 110
161 591 120
Operation: Deaerate when filling - aerate when emptying
Depending on the filling speed, the float is lifted by the rising level of the liquid. At the same time, gases are removed from the system through the valve. When the pipeline or the storage tank is completely full, the float is pressed into the profile seal and closes the valve. The system is now completely deaerated. When the liquid level sinks as a result of draining, the valve automatically opens again and air can flow in.
Valve Open
Float rises when filling > Deaerate
Valve closed and sealed tight
Float sinks when draining > aerate
28 PAAS Source Book
www.paas.com.au
V 4.6
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