Product Overview: Flanged Check Valves
Z41H Flanged Gate Valve Applicable Media: Water, gas, oil products, natural gas, and corrosive acidic or alkaline media.
Nominal Pipe Size: DN15 to 800, 1/2" to 24"
Drive Methods: Manual, Gear, Pneumatic, Electric, etc.
Valve Materials: Cast steel, stainless steel, etc.
Temperature Range: Stainless Steel Valves ≤ 180°C, Cast Steel Light ≤ 200°C, Cast Steel Heavy ≤ 425°C; (Specific temperature ranges depend on the seal material and medium properties.)
Flanged Gate Valve Standards and Specifications:
Design and Manufacturing Standard for Valves: GB/T12234-89
Structural Length Standard: GB/T12221-89
Inspection and Testing Standards: JB/T9092-99, GB/T13927-92
Flange Connection Standard: JB79-94, GB/T9113-2000
1. Material selection for flanged gate valves, compliant with relevant standards; quality of materials.
2. Meets standard requirements with reliable sealing, excellent performance, compact structure, reasonable design, robust valve, smooth flow path, low flow resistance coefficient, and aesthetically pleasing appearance.
3. Utilizes flexible graphite packing for reliable sealing, with easy and flexible operation.
4. The sealing pairs are matched reasonably. The sealing surfaces of the gate and valve seat are made by surfacing with Stellite cobalt-based hard alloy of different hardness, ensuring reliable sealing, high hardness, excellent wear resistance, high-temperature resistance, corrosion resistance, good abrasion resistance, and long service life.
5. The valve rod is heat treated and surface-nitrided, offering excellent corrosion resistance, wear resistance, and scratch resistance.
6. Utilizing a wedge-type elastic gate structure, medium and large bore sizes are equipped with thrust bearings, featuring low friction. It also comes with an impact handwheel for easy opening and closing. Structure types: elastic wedge single gate, rigid wedge single gate.
7. Various pipe flange standards and sealing surface types are available to meet diverse engineering requirements and customer needs.
