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GA Industries, LLC • Phone: 724-776-1020 • Fax: 724-625-2170

Email: ga@gaindustries.com • www.gaindustries.com 

Figures 920 and 920H

 Air Release Valve for Water Data Sheet 920.1

Product Features

• Heavy cast iron body and cover

• Corrosion resistant 316 stainless steel float and linkage

• Compound lever operation with adjustable rubber seat

• Standard 150 PSI or 300 PSI maximum working pressure

• Drain and test ports

Standard Materials

• Body, Cover Cast Iron, ASTM A126 Class B

• Float Stainless Steel, Type 316

• Orifice Stainless Steel, Type 316

• Linkage Mechanism Stainless Steel, Type 316

• Rubber Seat Buna-N

• Cover Fasteners Steel, A307, Zinc Plated

 Alternate materials available, consult factory for selection

Coatings

• Standard: Uncoated Internal, Enamel Primer External

• Optional: Internal 2-Part NSF-61 Epoxy

• Optional: External 2-part Epoxy Primer

• Optional: Internal and External NSF-61 Fusion Bond Epoxy

Certifications and Approvals

• Fully conforms with AWWA C512

• NSF-61 Certified for contact with drinking

water

• NSF-372 Certified lead free 

Options and Accessories

• With Vacuum Check

• With Inlet Isolating Lead-Free Bronze Ball

Valve

• With Stainless Steel Cover Bolts

• With Viton Rubber Seat 

Ordering Data

• Figure Number

• Inlet Size

• Line Fluid (if not clean water)

• Coating (if not standard)

• Options and Accessories

Maximum Non-Shock Working Water Pressure

at up to 150F (66C)

Figure No. 920 920H

Inlet Connection 1” or 2” NPT 1” or 2” NPT

Outlet Connection ½” NPT ½” NPT

Orifice Diameter 3/16” 1/8”

Working Pressure

Range (1, 2) 10 to 150 PSI 10 to 300 PSI

Pressure Rating 300 PSI 300 PSI

Hydro Test  450PSI 450 PSI

Product Application

The GA Industries Figure 920 and 920H Air Release Valves

vent accumulated air while the system is in operation and

pressurized. Typically installed at high points where airnaturally collects, the valve automatically opens when

sufficient air has collected in the valve and closes tightly after

the air is released.

In addition to being installed on pipelines, Figure 920 and

920H valves are also installed on the top of split case pumps

to release air from the volute, on pressure filters and anyplace

where it’s necessary to provide an automatic release of air for

efficient system operation.

Note:

1. Minimum working pressure is the lowest pressure at

which valve is factory tested to seat tightly.

2. Maximum working pressure is the highest pressure at

which the valve will open to release air

3. Float designed to withstand 1,000 PSI collapse pressure

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©Copyright GA Industries, LLC 2014

Specifications subject to change without noticeGA Industries, LLC • Phone: 724-776-1020 • Fax: 724-776-1254

Email: ga@gaindustries.com • www.gaindustries.com 

Data Sheet 920.1

Dimensions and weights are approximate. If critical, request

certified drawings.

 Alternate materials of construction are available, consult factory.

Figure 920 and 920H

 Air Release Valve for Water

STANDARD MATERIALS

ITEM DESCRIPTION MATERIAL

1. BODY CAST IRON, ASTM A126-B

2. COVER CAST IRON, ASTM A126-B

3. LEVERAGE BRACKET 316 STAINLESS STEEL

4. BRACKET SCREW 18-8 STAINLESS STEEL

5. LEVER ARM 316 STAINLESS STEEL

6. FLOAT ARM 316 STAINLESS STEEL

7. ORIFICE BUTTON BUNA-N / 18-8 STAINLESS STEEL

8. HEX NUT 18-8 STAINLESS STEEL

9. LOCK WASHER 18-8 STAINLESS STEEL

10. SPRING PIN 302 STAINLESS STEEL

11. AIR RELEASE VALVE

LINK316 STAINLESS STEEL

12. PIVOT LINK 316 STAINLESS STEEL

13. FLOAT CAP SCREW 18-8 STAINLESS STEEL

14.BRACKET LOCK

WASHER18-8 STAINLESS STEEL

15. FLOAT BALL 316 STAINLESS STEEL

16. COVER BOLTS STEEL, ASTM A307

17. COVER NUTS STEEL, ASTM A307

18 PIPE PLUG, ½” STEEL

19 PIPE PLUG, 1” MALLEABLE IRON

20 ORIFICE 316 STAINLESS STEEL

21 O-RING BUNA-N RUBBER

 Approximate Weight – 24 lbs

 Air Venting Rate

Standard Cubic Feet per Minute (SCFM)

at Various Working Pressures

Working

PressureFigure 920 Figure 920H

10 PSI 8.7 3.9

15 PSI 10.6 4.7

25 PSI 14.1 6.3

50 PSI 23.1 10.3

75 PSI 32.0 14.2

100 PSI 40.9 18.2

125 PSI 49.8 22.1

150 PSI 58.7 26.1

200 PSI - 34.0

250 PSI - 41.9

300 PSI - 49.8