The Inbal Automatic Control Valve from HMA Flow & Industrial is a pressure-operated, sleeve-actuated valve designed from basic concepts, with a built-in actuator to function as a control valve in fire protection. The Inbal Valve utilises the unique NMMP (No Moving Mechanical Parts) design to ensure a long life of dependable operation. The small physical dimensions and the low weight enable the Inbal valve and control trim assembly to occupy much less space and significantly reduce the time and labour needed for installation.

The Inbal valve withstands pressure surges, and is entirely resistant to false tripping. Opening is quick, yet smooth, virtually eliminating water hammer. All valves are rated at 21 bar (300 psi), and are available in sizes 40 mm to 300 mm (1½”” to 12″”). The Inbal valves from HMA Flow & Industrial are listed by Underwriter’s Laboratories (UL), approved by Factory Mutual (FM) and VdS Schadenverhütung), and type approved by Lloyd’s Register, the American Bureau of Shipping (ABS), Det Norske Veritas (DNV), and Bureau Veritas (BV).

As standard, Inbal Valves are made from ductile iron and epoxy-coated, while the control trim is made from stainless steel and brass, nickel-chrome plated. A variety of additional materials such as cast steel, stainless steel, nickel aluminium bronze, and titanium are supplied ex-stock. Inbal valves from HMA Flow & Industrial are available with threaded, flanged, wafer, or grooved ends. All valves are flow-tested before being supplied. The Inbal valves are designed to work with potable water, foam, and seawater.