Soft seal butterfly valve D371F stainless steel wafer PTFE 304 butterfly valve turbine manual mechanism

Stainless steel butterfly valves are widely used in industrial pipelines such as power, petrochemical, water supply and drainage, and municipal construction, for regulating flow and carrying fluid. The sealing surfaces of the valve seat and disc plate are made of different hardness and stainless steel, which has good corrosion resistance and long service life. The opening and closing part of a butterfly valve is a disc shaped butterfly plate that rotates around its own axis within the valve body to achieve opening and closing or adjustment. The valve is called a butterfly valve. The butterfly valve is usually less than 90 degrees from fully open to fully closed. The butterfly valve and stem themselves do not have self-locking force. In order to position the butterfly plate, a worm gear reducer needs to be installed on the valve stem. The use of a worm gear reducer not only enables the butterfly plate to have self-locking ability and stop at any position, but also improves the operational performance of the valve. The characteristics of industrial butterfly valves are high temperature resistance, high pressure range, large nominal diameter, and the valve body is made of carbon steel. Large high-temperature butterfly valves are manufactured by welding steel plates and are mainly used for high-temperature medium flue gas ducts and gas pipelines.

 

advantage

oneConvenient and fast opening and closing, labor-saving, low fluid resistance, and can be operated frequently.

twoSimple structure, small size, and light weight.

threeIt can transport mud and store less liquid at the pipeline mouth.

fourUnder low pressure, good sealing can be achieved.

fiveGood tuning performance.

characteristic

Butterfly valves have the characteristics of simple structure, small volume, light weight, low material consumption, small installation size, fast switching, 90 degree reciprocating rotation, and small driving torque. They are used to cut off, connect, and regulate the medium in pipelines, and have good fluid control characteristics and sealing performance.

mode

Connection method: flange, threaded port or welding.

Drive mode: manual, electric, pneumatic, bevel gear, spur gear rotation.

Applicable media: water, oil, gas, steam, etc.

Overview of flanged stainless steel butterfly valves:

The flange type stainless steel butterfly valve is composed of a rubber sealed butterfly valve, a carbon steel or stainless steel valve plate, and a valve stem. Suitable for regulating flow and intercepting medium on water supply and drainage, gas pipelines with a temperature of 80120, such as food, medicine, chemical, petroleum, electricity, light textile, papermaking, etc.

Its main characteristics are:
1. The design is novel, reasonable, and has a unique structure, with light weight and fast opening and closing.
2. Small operating torque, convenient operation, labor-saving and agile.
3. Can be installed in any position, convenient for maintenance.
4. The sealing element can be replaced, and the sealing performance is reliable, achieving zero leakage in both directions.
5. Sealing materials have the characteristics of aging resistance, weak corrosion resistance, and long service life.

Design standard: GB/T2238-1989
Flange connection size: GB/T9113.1-2000; GB/T9115.1-2000; JB78
Structural length: GB/T12221-1989
Pressure test: GB/T13927-1992; JB/T9092-1999

Nominal diameter	DN（Mm）	fifty eight hundred
Nominal pressure	PN（MPa）	zero point six	one	one point six
Test pressure	strength test	zero point nine	one point five	two point four
	Sealing test	zero point six six	one point one	one point seven six
	Air tightness test	zero point six	zero point six	zero point six
Applicable medium	Air, water, sewage, steam, gas, oil, etc.
Driving form	Manual, worm gear transmission, pneumatic transmission, electric transmission.
Part Name	material
valve body	Ductile iron, cast steel, alloy steel, stainless steel
Disc	Cast steel, stainless steel, and special materials
Sealing ring	Various types of rubber, polytetrafluoroethylene
Valve stem	2Cr13Stainless steel
filler	OO-ring, flexible graphiteO