Manual enamel flange diaphragm valve g41c-10 DN125

  1、 Overview enamel valve is made by coating the enamel with high silicon content on the metal surface and burning it at 950 ℃ to make the enamel close to the surface of metal iron tire
Therefore, it has the dual advantages of chemical stability and metal strength similar to glass
It is an excellent corrosion-resistant equipment element

Diaphragm valve is a stop valve that uses the diaphragm in the valve cavity as the opening and closing part to close the flow channel, block the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover
Diaphragms are usually made of elastic, corrosion-resistant and impermeable materials such as rubber and plastic
The valve body is mostly made of metal lining, unlined or plastic
The utility model has the advantages of simple structure, good sealing and anti-corrosion performance and small fluid resistance
It is used for media with atmospheric pressure, normal temperature, strong corrosivity and suspended substances
The electric diaphragm valve and manual diaphragm valve produced by our company can be divided into enamel diaphragm valve and manual diaphragm valve
(1) Low fluid resistance
(2) It can be used in media containing hard suspended solids; Since the medium is only in contact with the valve body and diaphragm, there is no need for stuffing box, there is no leakage of stuffing box, and there is no possibility of corrosion to the valve stem
(3) Suitable for corrosive, viscous and slurry media
(4) It cannot be used in high pressure occasions

2、 Technical specification for enamel: 1
Acid resistance: it has good corrosion resistance to various organic acids, inorganic acids and organic solvents
If the glass lined sample produced by our factory is boiled in 20% HCI solution for 48h, the corrosion rate is 0
9lg/m2 D (the index of superior products is 1
0g / m2
D)

2
Alkali resistance: the corrosion resistance of glass lining to alkaline solution is worse than that of acid solution
However, the glass lined samples of our factory are corroded in 1n sodium hydroxide solution at the test temperature of 80 ℃ for 24h
The corrosion rate is 6
76g/m2 D (the index of superior products is 7
0g / m2
D)

3
Operating temperature: glass lining equipment shall be heated and cooled slowly
The glass lined equipment manufactured by our factory has a service temperature of 0-200 ℃, and is resistant to temperature change ≥ 200℃。
4
Thickness of porcelain layer: the thickness of porcelain layer of glass equipment is 0
8-2
0mm, and the thickness of porcelain layer of glass lined equipment accessories is 0
6-1
8mm

5
Withstand voltage: the glass lining has good insulation
When the glass lining is checked with 20kV high-frequency electric spark within the specified thickness, the high-frequency electric spark cannot penetrate the porcelain layer

6
Impact resistance: the smaller the internal stress of the glass layer, the better the elasticity, the greater the hardness, and the higher the flexural and compressive strength, the better the impact resistance
When the glass layer of our factory is impacted by a steel ball with a diameter of 30mm and a weight of 112G within the specified thickness, the impact energy is 272 & times; 10-3j (the index of superior products is 260 & times; 10-3j)

3、 Application fields: glass lined valves and pipe fittings are widely used in chemical industry, medicine, dyes, pesticides, organic synthesis, petroleum, food manufacturing, national defense industry and other industrial production and scientific research, such as reaction, evaporation, concentration, synthesis, extraction, polymerization, saponification, mineralization, chlorination and nitration, so as to replace expensive stainless steel and non-ferrous metals

4、 Installation of glass lined valve and pipe fittings 1
Handling: remember not to collide or throw when handling; 2
Installation: do not use other crowbars or hammers during installation to avoid vibration or collision damage to enamel parts
3
Check the inner cavity of valves or pipe fittings before installation to avoid dirt blocking the valve, affecting normal use, or damaging the medium

5、 Maintenance 1
Valves and pipe fittings shall be stored in a dry and ventilated place without installation to avoid exposure to the sun and humidity
If they are not installed frequently, the valves shall be cleaned and maintained; 2
After installation on the pipeline or equipment, check whether the bolts of the stuffing box are loose
For valves with screws, the screw parts shall be lubricated; 3
For equipment installed outdoors, preparations for waterproof, moisture-proof and anti-collision shall be made (especially for equipment equipped with electrical devices)