DIG’s 25 PSI preset pressure regulators (hose and pipe thread) are used to reduce and regulate the incoming pressure of a household’s water entering a drip irrigation or micro sprinkler system to the appropriate operating pressure of 25 PSI, which is within the range of recommended operating pressures for a micro irrigation system. The pressure regulators’ design includes few moving plastic parts and a diaphragm which regulates itself in reaction to the overall system back pressure. They offer exceptional pressure control and provide consistent outlet pressures over a wide range of incoming pressures.
|D46||25 PSI Preset Pressure Regulator Inlet 3/4 in. FHT x Outlet 3/4 in. MHT – (black) ||
|D46P||25 PSI Preset Pressure Regulator Inlet 3/4 in. FNPT x Outlet 3/4 in. MNPT – (grey) ||
The pressure regulator is a critical part of drip and other irrigation systems when water pressure is higher than the suggested operation pressure recommended for the system. In most households the water pressure is between 40 and 100 PSI with some homes being even higher. Typically, in homes with high pressure, a heavy duty pressure regulator is installed on the main water supply to lower the pressure entering the house. Drip irrigation systems are designed to work at an even lower pressure than is set for the house, with the optimal pressure for a drip system being between 15 and 30 PSI. If a higher pressure is found in a drip system, problems such as drip emitters popping off the drip or micro tubing, high flow damaging the drip emitters or micro sprinklers, components blowing out of the drip and micro tubing, and overall shortening of system life can occur. To achieve extended life with high uniformity and lower maintenance, a pressure regulator is highly recommended to maintain optimum system pressure, regardless of any fluctuations in the house system pressure.
The starting point of connection to the water supply can be a faucet (hose bib), AC or anti-siphon valve, well, pump or rain barrel combined with gravity feed.
To the faucet, first connect a backflow device (model D45). If water quality is a concern, install DIG’s fine mesh 3/4″ filter with 155-mesh (model D57A), then install the 25 PSI pressure regulator (model D46) and then a 3/4″ swivel adapter with screen (model C34).