Sun Hydraulics Inc, globally recognised manufacturers of Flow Control Valves which exceed the expectations of Original Equipment Manufacturers (OEM) and designers worldwide. Unsurpassed quality, high performance and durability at competitive prices. Sun Flow Control Valves are used to control the speed with which an actuator (linear-hydraulic cylinders or rotary- hydraulic motors) moves.
Cartridge Valves offer advantages to designers and owners of machines. A cartridge can be installed in a custom manifold with other valves to form a compact arrangement to control different functions of a machine. Cartridges can be installed in such a way as to eliminate multiple connections such as hoses and fittings all of which are liable to become loose and leak, hoses are expensive and bulky: Flow Control Valves can be sized to meet the exact requirements of that part of a circuit, a large Relief Valve, smaller Pressure Reducing Valve, Sequence Valves as required with Flow Control Valves to regulate the required actuator speed. Maintenance is a matter of testing, identifying the failed valve and removing only that cartridge without interfering with hose and fittings- quick and clean. A cartridge valve is a self contained valve with no loose parts, it is simple to remove defective parts and replace them with basic tools. Line Bodies are available to allow one or a couple of cartridge valves to be installed in a system. Common port options in Australia are BSPP or UNO, these are parallel threads where the sealing is done by elastomeric seals and the cartridges are retained by threads- the taper thread forms are not recommended for aluminium bodies, premature cracking is likely. Sealing methods like Teflon tape can lead to contamination of the hydraulic system and valve failure/ sticking etc.
Sun Flow Control valves are available for flow rates from a litre or so to 600 litres in a single cartridge, they can be simple adjustable orifice, controlling flow in both directions, free reverse flow control or pressure compensated Flow Control Valves such that the flow rate is constant regardless of varying system pressure