Page 58 of Propane and Natural Gas Equipment by National Energy Equipment, Inc.

CANADAS LEADER IN ENERGY PRODUCTS EQUIPMENT  BACK CHECK VALVES Allows flow in only one direction and are normally closed. They are installed in liquid filling connections on stationary storage tanks, bobtail delivery trucks, and liquid transfer lines. The valves are frequently used in conjunction with globe, angle and ball valves, as well as large single-check filler valves. Fisher G200 Series Back Check Valves Specifically intended for heavy-duty inline service at the bulk plants transfer area. Soft seat construction gives tight shutoff for maintenance, while body design reduces flow resistance improving flow capacity. The G201 has a built-in flow indicator, which can be used to replace sight flow indicators. Squibb Series G200 Series G105 G100 Series G109 Back Check Valves NEE # Application Seat Construction Container or Inlet Connection Outlet Connection Flow Capacity 10 PSIG Differential Pressure * Body Construction NEE # Valve with Flow Indicator G100 Tanks Metal-to- Metal 3/4 M NPT 3/4 F NPT 21 GPM Brass - G101 1 1/4 M NPT 1 1/4 F NPT 55 GPM A1727 77 GPM Steel A1728 2 M NPT 2 F NPT 150 GPM A1733 Tanks or In-Line 2 M NPT 150 GPM G112 2 F NPT G102 Tanks Brass G109 In-Line 2 F NPT G104 Tanks 3 M NPT 3 F NPT 250 GPM Steel G105 Tanks or In-Line Soft Seat 2 F NPT 2 M NPT and 1 1/4 F NPT 137.5 GPM G106 3 F NPT 2 M NPT 254 GPM G107 3 M NPT 3 M NPT and 2 M NPT 254 GPM G200-10 In-Line 1 1/4 F NPT 1 1/4 F NPT 160 GPM (125 GPM)** Ductile Iron G201-10 G200-16 2 F NPT 2 F NPT 250 GPM (200 GPM)** G201-16 G200-24 3 F NPT 3 F NPT 750 GPM (300 GPM)** G201-24 * Propane Flow ** 1 PSIG differential

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