Heavy duty brass construction provides durable performance for a wide range of applications. The body is made from thickened brass to withstand varying water pressures and longterm use. Efficient pressure management protects plumbing and reduces water consumption. The valve regulates incoming pressure to a safer level, helping prevent leaks and excessive flow across fixtures and pipes. Seamless DN20 connections ensure compatibility with common water supply setups. This valve features a DN20 female inlet and DN20 female outlet, suitable for typical domestic and light commercial systems. Allinone installation package for easier setup. Each unit includes a pressure gauge and an L shaped pressure regulator tool, enabling straightforward installation right out of the box. Use scenario: Residential main supply installation to stabilize house pressure, protect appliances and fixtures, and reduce water waste from incoming pressure. Use scenario: Small commercial or office building water system to safeguard plumbing, minimize pressurerelated wear, and improve overall efficiency. Use scenario: Garden irrigation and sprinkler circuits where controlled pressure helps protect emitters and achieves more uniform wetting without overwatering.