Submittal Sheet

ManualsBrandsWatts ManualsAir Valves1/8" HAV Auto Air Vent w/ Manual Override

MATERIALS

The HAV Air Vent is manufactured in two parts (body

and disc cartridge).

• Chromed Brass - body

• Brass - disc bearing cover

• Stainless steel - check valve

• Copper - thermostat assembly

• Neoprene - O-ring

• Heat resistant ABS plastic material - handwheel

• Special cellulose fiber - disc

A periodic check of the condition of the discs will

establish the need for replacement. When the discs

are damaged, the valve can only operate manually;

to restore to automatic working, the cartridge must

be replaced.

To replace the cartridge, unscrew the handwheel,

clean the seat of the valve of any foreign matter and

then assemble a new disc cartridge. The body con-

tains a check valve, preventing water leakage, there-

fore, this operation can be carried out without drain-

ing the water from the radiators.

PRESSURE-TEMPERATURE

Suitable for water only additives: Only inhibited glycol

based additives are permissible.

Maximum Working Pressure: 125 psi (8.6 bar)

Minimum Working Pressure: 1.45 psi (10 kPa)

Maximum Water Temperature: 240°F (116°C)

Minimum Water Temperature: 140°F (60°C)

Test Pressure: 130 psi (9 bar)

Maximum Steam Pressure: 10 psi (69 kPa)

BASIC CONSTRUCTION

ES-HAV 9844 © Watts Regulator Co., 1996 Printed in U.S.A.

CAPACITY

2.12

1.77

1.41

1.06

.71

.35

0 14.2 28.4 42.7 56.9 71.1 85.3 99.5 113.8 128 psi

0 .98 2.0 2.9 3.9 4.9 58.8 6.8 7.8 8.8 bars

Correct Installation/Maintenance

Incorrect Installation/Maintenance

⁄8" -

⁄4"

Min. 90"

.47"

1.14"

1.61"

⁄8" -

⁄4"

.43"

Diagram 1

Venting Capacity

Diagram 2

86 104 122 140 158 176 194 212 230 248 °F

30 40 50 60 70 80 90 100 110 120 °C

Water Temperature

Drying Time in Hours

SCFM