The operating temperature of the sealing ring of the butterfly valve


Release time:

2021-09-15

Soft seal butterfly valve is suitable for hot and cold water systems below 100℃. If the system requires higher temperatures, use metal sealed butterfly valves (available in systems up to 500 ° C).

Soft seal butterfly valve is suitable for hot and cold water systems below 100℃. If the system requires higher temperatures, use metal sealed butterfly valves (available in systems up to 500 ° C).

The sealing ring of the soft seal butterfly valve (all kinds of commonly used rubber, PTFE) the highest use temperature: nitrile rubber NBR ≤ 80℃, EPDM ≤ 120℃, PTFE ≤ 150℃.

The highest temperature used in acid-base media is:

1, neoprene rubber: nitric acid (10%) 29℃; Citric acid 29℃; Sodium hydroxide 93℃.

2, butyl rubber: sulfuric acid (50%) 66℃; Nitric acid (10%) 40℃; Sodium hydroxide 85℃.

3, F4: sulfuric acid (0-100%) 180℃; Nitric acid (0-100%) 180℃; Sodium hydroxide 180℃.

I. D341X Worm Gear Flange Soft Seal Butterfly Valve - Overview

D341X worm gear flange type soft seal butterfly valve is suitable for temperature ≤120°C food, medicine, chemical, petroleum, electric power, textile, paper and other water supply and drainage and gas pipeline flow and intercept medium regulation. Nominal pressure ≤1.6MPa. .

Two, D341X worm gear flange soft seal butterfly valve - features

1. D341X worm gear flange type soft seal butterfly valve design is novel and reasonable, unique structure, light weight, fast opening and closing.

2, the operation torque is small, easy to operate, labor saving and intelligent.

3, can be installed and maintained in any location.

4, replaceable sealing ring, reliable sealing performance, two-way sealing zero leakage.

5. Sealing material aging resistance, corrosion resistance, long service life.

3, D341X worm gear flange type soft seal butterfly valve - implementation standard

Design standard: GB/T12238-1989

Flange connection size: GB/T9113.1-2000; GB/T9115.1-2000; JB78

Structure length: GB / 12221-1989

Pressure test: GB/T13927-1992; JB/ T9092-1999