The Inbal Automatic Control Valve 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, which ensures a long life of dependable operation.
The small physical dimensions and 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, and are available in sizes 40 mm to 300 mm.
Inbal valves are approved by Factory Mutual (FM) by VdS Schadenverhütung, type approved by Lloyd’s Register, American Bureau of Shipping (ABS), Det Norske Veritas (DNV), and Bureau Veritas (BV), and listed by Underwriter’s Laboratories (UL) for Fire Pump Relief valve.
As standard, Inbal valves are made from ductile iron and epoxy-coated, while the control trim is made from stainless steel and brass, and 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 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.