Description This item is well made of premium material for durable and practical use. It is simple to connect to campsite water supply, reduces water pressure and protects your filter and hose from damage. working principle can be simply understood as the entrance pressure and outlet pressure, through the control closure flow inside the opening of the size to control the pressure at the outlet, the water through the opening, closure and fluid resistance is small, the pressure loss is small, the outlet pressure is greater, and vice versa outlet pressure is small. Feature - Color: As shown.- Material: Brass.- Size: Approx. 7.7 x 11 x 3 cm / 3.0 x 4.3 x 1.2 inch (L x W x H).- Made of material with precise design.- Reliable and durable.- Simple internal structure, fine workmanship.- Apply to: Hydraulic instability, water flow too fast, water purifiers, solar energy, gas heater and faucet.Packing list: 1 x Heavy Duty Adjustable Brass Water Pressure Reducing Regulator Valves DN25