Figure 992 Combination Vacuum Breaking and Air Release Valve
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The Figure 992 Combination Vacuum Breaking and Air Release Valves is a 2-valve assembly consisting of a Figure 990 Vacuum Breaking Valve and a Figure 920 Air Release Valve. It is suitable for water that does not contain solids or debris. The valve is available from 2-1/2” (DN65) to 12” (DN300) with ANSI Class 125 or Class 250 flanged cast iron body for pressures to 400 PSI (2,758 kPa). The air release valve is standard with either 3/16” (5mm) orifice for working pressure up to 150 PSI (1,034 kPa) or 1/8” (3mm) for pressure to 300 PSI (2,069 kPa).
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Figure 990 Vacuum Breaking Valve
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Figure 990 Vacuum Breaking valves are suitable for water that does not contain solids or debris and has a fixed opening pressure of approximately ½ PSI (3.5 kPa) BELOW atmospheric. The valve is available from 2-1/2” (DN65) to 12” (DN300) with ANSI Class 125 or Class 250 flanged cast iron body for pressures to 400 PSI (2,758 kPa). The air inlet is supplied with a hood and screen to minimize entry of foreign material. The standard valve has a cast iron body, bronze trim and Buna-N rubber seat for use up to 150F (82C). Optional 316 stainless steel trim is available.
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Figure 993 Combination Vacuum Breaking and Air Release Valve for Wastewater
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The Figure 993 Combination Vacuum Breaking and Air Release Valve is a 2-valve assembly consisting of a Figure 991 Vacuum Breaking Valve and a Figure 929 Short Body Wastewater Air Release Valve. The valve is suitable for both clean water and solids-bearing fluids such as sewage, wastewater and raw water. The valve is available from 2-1/2” (DN65) to 24” (DN600) with ANSI Class 125 or Class 250 flanged cast iron body for pressures to 400 PSI (2,758 kPa). The air release valve is standard with either 5/16” (8mm) orifice for working pressure up to 75 517 PS (kPa) or 3/16” (5mm) for pressure to 150 PSI (1,034 kPa).
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