Concentric Butterfly Valves

PTFE Lined Concentric Butterfly Valve Specification: Model: D71F, D371F Size: 2-48, DN50-DN1200 Pressure: Class150LB, PN6-PN16 Body Materials: Ductile Iron, Carbon Steel, Stainless Steel, Bronze etc. Disc Material: SS304, SS316, Aluminium Bronze Sealing Surface: EPDM, NBR Working Pressure: Low Pressure Design & Manufacture: API609 Face to Face: ASME B16.10 Inspect & Test: API 598 Connection Type: Wafer, Flange, Lugged Operation: Lever, Worm Gear, HS Code: 8481804090 Application: Water, Steam, Oil, Seawater etc. Feature: Replaceable Seat Bi-directional Concentric/ Center Line Design Freely Regulating Flow PTFE Lined, Four-stage load elastic seal and absolutely ensures zero leakage both inside and outside.

Wafer Type Concentric Butterfly Valve Specification: Model: LTD71X Size: 2~48, DN50~DN1200 Pressure: PN10~PN16 Body Materials: Carbon Steel, Cast Iron, Stainless Steel, Bronze etc. Sealing Surface: Soft Sealed Working Temperature: -40~120 Working Pressure:

What is a butterfly valve? Butterfly valves have a wide range of uses in the water, wastewater, fire protection, and gas supply industries, as well as in the chemical and oil industries, fuel handling systems, and power production. The basic construction, which does not take up a lot of space, as well as the lightweight and reduced cost when compared to other valve designs, are some of the benefits of this type of valve. A butterfly valve is a shut-off valve with a straightforward design. The disc stops the valve hole in the closed position, while the disc is spun to enable flow in the open position. The butterfly valve provides for rapid opening and closing by turning a quarter turn from fully open to fully closed, or the other way around. An acentric or concentric butterfly valve is the most frequent form of butterfly valve arrangement. The stem of this sort of butterfly valve travels along the middle line of the disc in the center of the pipe bore, and the seat is the inside diameter of the valve's body. This no offset valve arrangement is also known as a resilient-seated valve because the seal's dependability is dependent on the flexibility of the seat rubber when the flow is closed. The disc first interacts with the seat at roughly 85�° for a 90�° revolution in this sort of valve. In low-pressure applications, concentric butterfly valves are commonly utilized. The concentric butterfly valve is a flow control mechanism that controls the flow medium in the system with a rotary disc. The disc stays in the passage, but it provides very little resistance to the flow due to its thinness. The design of concentric butterfly valves is relatively straightforward. The basic components of a concentric butterfly valve are the body, seal, disc, and stem. A disc is positioned in the middle of the connecting pipe, and a stem is connected to the actuator or handle on the exterior of the valve in the typical butterfly valve. The disc is perpendicular to the flow when the valve is closed, and the seat of the valve is closed. APPLICATIONS Water treatment. Water Distribution. Water Transmission. Aeration System. Fire Protection Body Material: Cast Carbon steel (WCC,WCB, WC6), Stainless Steel [SS316, SS304, SS316L, SS904L, CF8, CF8M, F31L, F91], DUPLEX STEEL and Super duplex Steel (F51,F53,F55) , Cast iron, Ductile Iron. Size 2 48 Class: 150 to 300; PN 6 PN 25 Ends: Wafer, flanged, lug Operations: Lever operated, gear operated, pneumatically actuated, and electric actuated.

Technical Data Nominal diameter: DN50~DN600(2"~24") Nominal pressure: PN16 Working temperature: -5C ~ +85C Sealing test:1.1PN Shell test:1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.

Features and Benefits Vulcanized EPDM seat Streamlined SS304 disc, corrosion resistant ISO5211 standard top flange, suit for different operations. Both gear and lever operated are available. Electrostatically applied Akzo Nobel epoxy powder internally and externally. Applicable Standards Design standard: BS5155, EN593, API609 Flange standard: BS EN1092-2 Top flange standard: ISO5211 Face to face standard: BS EN558-1 Pressure test standard: BS EN12266-1, API598 Technical Data Nominal diameter: DN50~DN150 (2"~6") Nominal pressure: PN16 Working temperature: -5C ~ +85 C Sealing test:1.1PN Shell test:1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.

Features and Benefits Vulcanized EPDM seat Streamlined SS304 disc, corrosion resistant ISO5211 standard top flange, suit for different operations. Both gear and lever operated are available. Electrostatically applied Akzo Nobel epoxy powder internally and externally. Applicable Standards Design standard: BS5155, EN593, API609 Flange standard: BS EN1092-2 Top flange standard: ISO5211 Face to face standard: BS EN558-1 Pressure test standard: BS EN12266-1, API598 Technical Data Nominal diameter: DN50~DN600(2"~24") Nominal pressure: PN16 Working temperature: -5 C ~ +85 C Sealing test:1.1PN Shell test:1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.

Features and Benefits Vulcanized EPDM seat. Streamlined DI+EPOXY disc, corrosionresistant. ISO5211 standard top flange, suit for differentoperations. Electrostatically applied Akzo Nobel epoxypowder internally and externally. Applicable Standards Design standard: BS5155, EN593, API609 Flange standard: BS EN1092-2 Top flange standard: ISO5211 Face to face standard: BS EN558-1 Pressure test standard: BS EN12266-1, API598 Technical Data Nominal diameter: DN200~DN600(8"~24") Nominal pressure: PN16 Working temperature: -5 C ~ +85 C Sealing test:1.1PN Shell test:1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.

Features and Benefits The double eccentric design offers an optimal sealing performance. Smart stainless steel seat, very low torque - easy to be operated. The EPDM rubber ring was fixed on the edge of the disc by the retainer ring, easy to be replaced. Eccentric pin connect the disc and stem, not destroy the structure of the stem, make sure the safety and strength. Applicable Standard Design standard: BS5155, EN593, API609 Flange standard: BS EN1092-2 Top flange standard: ISO5211 Face to face standard: EN558-1 basic series 13 Top flange standard: ISO5211/1 Technical Data Nominal Diameter: DN300~DN2400(12"~96") PN10 DN300~DN900(12"~36") PN16 Temperature range: -5 C ~ +85 C Sealing test: 1.1PN Shell test: 1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.

Applicable Standards Design standard: BS5155, EN593, API609 Flange standard: BS EN1092-2 Top flange standard: ISO5211 Face to face standard: BS EN558-1 Pressure test standard: BS EN12266-1, API598 Features and Benefits Wider EPDM seat, replaceable, its suit for different type of flanges. ISO5211 standard top flange, suit for different operations. Eccentric pin on the stem, not destroy stem structure, make sure the safety. Temperature overload protection. Free switch between hand and electric. IP67 protection level. Both ON/OFF type and Regulating type actuator available. Technical Data Nominal diameter: DN50~DN600(2"~24") Nominal pressure: PN16 Working temperature: -5C ~ +85C Sealing test: 1.1PN Shell test: 1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc. Power supply voltage: 220V Protection level: IP67 Environment temperature: -5C ~ 70C Working environment: No corrosive flammable medium, no explosive medium