Essential technical definitions, international standards, and terminology for municipal valve buyers and project engineers.
Standard metric nominal pipe size designation (e.g., DN50 = 2 inches, DN300 = 12 inches).
Metric working pressure rating in bar (PN10 = 1.0 MPa, PN16 = 1.6 MPa, PN25 = 2.5 MPa).
Stem design where threads are outside the valve body, preventing liquid corrosion and allowing visual verification of open/close position.
Compact gate valve stem design where stem threads turn inside the wedge, ideal for underground or space-restricted installations.
Electrostatic powder coating applied at 200°C for non-toxic, anti-corrosive protection inside drinking water valves.
High-grade synthetic rubber resilient wedge coating delivering exceptional water seal durability from -10°C to +120°C.
Volumetric flow rate of water in GPM or m³/h passing through a fully open valve at 1 PSI or 1 bar differential pressure.
Bubble-tight sealing performance certified under EN 12266-1 and ISO 5208 hydrostatic testing standards.
Precision control auxiliary valve that regulates main diaphragm chamber pressure without electric actuators.
