Industrial DN200 8" 2000psi Large Diameter Cast Iron Steel Soft Seal Butterfly Valve for Oil/Sea Water/Acid

• Customization: Available
• Media: Gas, Water, Steam
• Driving Mode: Manual, Electric, Hydralic, Pneumatic
• Connection Form: Flange, Weld, Wafer
• Structure: Centre Sealing
• Seal Form: Soft Sealing
• Valve Stem: Normal
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Soft Weld
• Valve Body: Casting
• Standard: API609 En593 BS5155 En1092 ISO5211
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Delivery Time: 15-25 Days
• Disc Material: Di/Nylon/1.4469/1.4529/Saf2205/2507/CF8/CF8m etc
• Seat Material: NBR/EPDM/PTFE/Silicone etc
• Coating: Customized
• End Standard: Pn6/10/16/25/21/150lb/JIS5K/10K/As2129 Table D/E/F
• Materials: Carbon Steel, Stainless Steel, Aluminum Bronze
• Shutoff Tightness: Zero Leakage
• Transport Package: Wooden Case
• Specification: customized
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

The butterfly valve soft seal means that one side of the seal pair is made of metal material, and the other side is made of elastic non-metal material. The sealing performance of this kind of seal is better, but it is not resistant to high temperature, easy to wear, and has poor mechanical properties. Such as: steel + rubber; steel + tetrafluoropolyethylene.



1. The valve body is small and light, easy to install, disassemble and repair, and can be installed at any position in the pipeline.

2. The whole valve has a simple structure and is very compact, with small operating torque, and can be opened and closed by rotating 90 degrees.

3. It has good flow regulation performance.

4. The seal can be replaced, the sealing performance is good, and the two-way sealing can be achieved.

5. The butterfly plate can be sprayed with a coating layer, such as nylon rubber or polytetrafluoroethylene, according to the needs of users.

6. Flange connection and wafer connection can be designed according to requirements.

7. According to the requirements of the working conditions, the soft-sealed butterfly valve can be driven manually, electrically or pneumatically.

A resilient seated butterfly valve is characterized by a stem that is bored into the disk and attached to the bottom of the valve.  Most of the time, the seats of this kind of valve is made of rubber, hence, the term resilient. 

As such, the disc relies on the high contact capability of the seat and the seat for tight shut-off. With this kind of design, the seat-to-seal contact begins at about 85-degree turn.

Resilient seated butterfly valves are made of a one-piece. This increases the strength of the valve as well as reduce its weight. The rubber-back seat makes it easy to install even when the butterfly valve is outdoors. Because of the nature of the material, it has a reliable sealing capacity.

The creation of the electric soft seal butterfly valve has transformed the traditional fluid control mechanism. Electric soft-seal butterfly valves are widely used in the chemical manufacturing, oil and gas, and petroleum industries due to their unparalleled accuracy, efficiency, and sustainability. Electric soft seal butterfly valves are now the preferred choice of many organizations seeking to optimize their fluid control processes.
 

At its core, an electric soft seal butterfly valve is a type of quarter-turn valve that controls the flow of fluid by using a disc or vane that rotates in the pipe to either block or allow the passage of fluid. What sets the electric soft seal butterfly valve apart is its unique sealing mechanism, which employs a soft seal, usually made of materials such as EPDM, NBR, or PTFE, to ensure tight shut-off and prevent leakage.
 

The electric soft seal butterfly valve operates through an electric actuator that is connected to the valve's stem. When the actuator is energized, it rotates the stem, which in turn rotates the disc or vane to control the flow of fluid. The soft seal, positioned around the circumference of the disc or vane, compresses against the seat, creating a reliable seal to prevent fluid leakage.

 

 

A	B	ANSI 150B		PN 10		PN 16		JIS 10K
		øK	N-ød	øK	N-ød	øK	N-ød	øK	N-ød
72	136	139.7	4-ø19	145	4-ø18	145	4-ø18	140	4-ø19
88	146	152.4	4-ø19	160	8-ø18	160	8-ø18	150	8-ø19
96.5	158	190.5	4-ø19	180	8-ø18	180	8-ø18	175	8-ø19
115	179	215.9	8-ø19	210	8-ø18	210	8-ø18	210	8-ø23
126	197	241.3	8-ø22.4	240	8-ø22	240	8-ø22	240	8-ø23
161	230	298.4	8-ø22.4	350	12-ø22	295	12-ø22	290	12-ø23
199	271	361.9	12-ø25.4	400	12-ø22	355	12-ø26	355	12-ø25
215	305	431.8	12-ø25.4	460	16-ø22	410	12-ø26	400	16-ø25
261	350	476.2	12-ø28.4	515	16-ø26	470	16-ø30	445	16-ø25
290	381	539.7	16-ø28.4	565	2ø-ø26	525	20-ø30	510	16-ø27