Product Name: Marine Center Flange Turbine Butterfly Valve GB/T3036-1994
Connection Methods: Flange; Wafer; Lug Type.
Structural Types: Centerline Type, Double Eccentric Type
Product Types: Type A, Type B, Type AS, Type BS, Type CS, Type SX, Type ES, Type QS, Type DS, Type FSB, Type FA, Type FB, Type FD, Type FQ
Product Diameter: DN40-1200
Product Pressure: 5K, 10K, 16K, 0.6, 1.0, 1.6 MPa, 125LB, 150LB, 300LB.
Valve Body Material: Cast Iron, Cast Steel, Stainless Steel, Bronze.
Disc Material: Stainless Steel, Ductile Iron, Aluminum Bronze, Cast Steel.
Seat Material: NBR, PTFE, FKM
Execution Standards
Design Specification: GB/T 12238
Face-to-Face Dimensions: GB/T 12221
Flange Connection: GB/T 9113
Testing and Inspection: GB/T 13927
Product Marking: GB/T 12220
Product Performance

Model D343H-10
D343H-16
D343H-25
D343H-40 D343H-10P
D343H-16P
D343H-25P
D343H-40P D343H-10R
D343H-16R
D343H-25R
D343H-40R
Working Pressure (MPa) 1.0~4.0
Applicable Temperature (°C) ≤425 ≤200
Applicable Medium Water, Oil or Non-Corrosive Media Nitric Acid Media Acetic Acid Media
Material Valve Body, Disc WCB CF8/304 CF3M/316L
Stem 2Cr13 304 316L
Valve Body Sealing Surface Overlay Welding 507 － －
Disc Sealing Surface 304 + Flexible Graphite 304 + PTFE 304 + PTFE
Packing Flexible Graphite PTFE PTFE
Butterfly Valve Types are Divided into
A- Flange connection dimensions according to GB/T569 for wafer-type screw-driven butterfly valves
B- Flange connection dimensions according to GB/T569 for wafer-type screw-driven extended shaft butterfly valves
AS- Flange connection dimensions according to GB/T2501 for wafer-type screw-driven butterfly valves
BS- Flange connection dimensions according to GB/T2501 for wafer-type screw-driven extended shaft butterfly valves
C- Flange connection dimensions according to GB/T569 for wafer-type hydraulic-driven butterfly valves
D- Flange connection dimensions according to GB/T569 for wafer-type pneumatic-driven butterfly valves
CS- Flange connection dimensions according to GB/T2501 for wafer-type hydraulic-driven butterfly valves
DS- Flange connection dimensions according to GB/T2501 for wafer-type pneumatic-driven butterfly valves
FA- Flange connection dimensions according to GB/T569 for flange-type screw-driven butterfly valves
FB- Flange connection dimensions according to GB/T569 for flange-type screw-driven extended shaft butterfly valves
FAS- Flange connection dimensions according to GB/T2501 for flange-type screw-driven butterfly valves
FBS- Flange connection dimensions according to GB/T2501 for flange-type screw-driven extended shaft butterfly valves
Flange-type butterfly valves use a precise J-shaped elastic sealing ring and a triple eccentric multi-layer metal hard seal structure, widely used in industrial pipelines for metallurgy, power, petrochemical, water supply and drainage, and municipal construction with medium temperature ≤425°C, for regulating flow and cutting off fluid.
Product Features
1. Flange-type metal hard seal butterfly valve adopts a triple eccentric seal structure, with almost no wear between the seat and disc, providing a tighter seal with use.
2. The sealing ring is made of stainless steel, combining the advantages of metal hard seal and elastic seal, offering excellent sealing performance at both low and high temperatures, with corrosion resistance and long service life.
3. The disc sealing surface is overlay welded with cobalt-based hard alloy, wear-resistant and long-lasting.
4. Large-sized discs use a truss structure, high strength, large flow area, and low flow resistance.
5. Metal hard seal butterfly valve has bidirectional sealing function, installation is not limited by medium flow direction or spatial position, can be installed in any direction.
6. The driving device can be installed in multiple positions (rotated 90° or 180°), convenient for user operation.

Shanghai Kehong Valve Co., Ltd. provides detailed product information including prices and images for Marine Center Flange Turbine Butterfly Valve GB/T3036-1994, including marine butterfly valves, double eccentric butterfly valves, flange butterfly valves, and double eccentric flange butterfly valves.