Gate valves used in potable-water and municipal networks must provide reliable isolation with low head loss in the fully open position. The correct specification depends on pressure rating, flange standard, installation orientation, water quality and the operator or actuator required.
Core technical checks
Buyers should verify the body and bonnet material, wedge construction, stem grade, coating system, flange drilling and allowable operating torque. Resilient seated gate valves are frequently selected for clean water service because the rubber-coated wedge supports tight shut-off and a clear flow path.
Quality control and documentation
A professional order should define hydrostatic shell and seat testing, dimensional inspection, coating inspection, marking and traceability. Large-diameter valves may also require approved lifting points, gearbox orientation and export packing plans.
GREYSEN supplies project valve packages with drawings, inspection coordination and documentation prepared around the agreed purchase specification.
