Ningbo Sanmin Import And Export Co.,Ltd.
Ningbo Sanmin Import And Export Co.,Ltd.
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The boiler water level gauge and the boiler form a connector. When water is not flowing, the liquid level is level and remains at the same level. By observing the water level in the water level gauge, we can determine the amount of water in the boiler and add water in a timely manner. This is used to determine the water level in the boiler.
| code | size(mm) | Part name | material | |||||
| L | L1 | D | D1 | D2 | Z-φd | |||
| FLD-130-300 | 300 | 165 | 115 | 85 | 65 | 4-φ14 | valve body | cast iron |
| FLD-130-350 | 350 | 200 | Sealing gasket | bushing | ||||
| FLD-130-440 | 440 | 200 | Glass spacers | graphite | ||||
| FLD-130-A | A | B | glass | Low alkali high borosilicate | ||||
| Nominal pressure | 2.5Mpa | |||||||
| strength test pressure | 4.0Mpa | |||||||
| Seal test pressure | 2.5Mpa | |||||||
| operation temperature | ≤225℃ | |||||||
| Working medium | Water, steam, oil | |||||||
Working principle of boiler water level gauge:
The boiler water level gauge uses the principle of a connector, and the position of the water surface we see from the transparent tube outside the boiler is equal to the actual position of the water surface in the boiler. It can be seen that when the liquid in the connector is stationary, the position of the liquid level is independent of the shape and thickness of each container.
Common types of boiler water level gauges:
Common ones include two-color water level gauges, which are used to display the water level of the boiler drum on site and are the most widely used on-site water level gauges; Magnetic flip plate level gauge, vertical tube, with a magnetic float in the tube. There are many small magnetic bodies arranged on both sides of the tube. When the water level changes, the float moves up and down. Due to the magnetic pole effect, the magnetic body flips, and different colors are brushed on both sides of the magnetic body to display the water level. Electric contact level gauge, for remote transmission, with several electrodes arranged in sequence in the vertical direction. The rise and fall of the water level will cause conduction or disconnection between the electrical stages, thereby displaying the water level; Double chamber balanced container, etc.
Q: Could you offer the free samples ?
A: Yeah, but it depends products, Pls contact us ina@pneuhydr.com or whatsapp 0086 15168536055
Q: What ' s your business scope ?
A: Our business scope is service of exporter automation parts with full container, and sell air cylinder , air source treatment , solenoid valve , air valve, motorize valve , Brass valve, hydraulic valve, hydraulic cylinder, air and oil fitting, pressure gauge etc .
Q: What types of products you can make ?
A: We can make many kinds of stainless steel, brass ,aluminum materials processing .like high pressure Valve / solenoid valve / electric valve / water valve/pneumatic valve/air cylinder/hydraulic valve/hydraulic accumulator products and so on .
Q: Can the product be made with our logo and brand ?
A: Yes , of course , we can make . we are OEM supplier for years and professional to make . But you need give us the authorization if it is possible .
Q:Can you provide original famous pneumatic and hydraulic,instruments brand goods ?
A: Yes,We can supply like Festo,Smc,Ckd,Burket,Hydac,Rexroth,Siemens,Rosemount,Marsh ,Endress+Hauser etc.
Q: Is there a warranty available?
A: Yes, normally products is one year quality guarantee.
Q: Is the connector in British or Metric system? What is the difference between PT, NPT, and G threads?
A: The G thread is cylindrical and does not seal itself, requiring additional gaskets to prevent leakage. PT and NPT are conical, and the internal and external threads become tighter and tighter when tightened. Sealing is achieved through the deformation of the threads, and sealant or tape is usually used in conjunction to enhance the sealing effect
G-thread is a cylindrical straight pipe used for non sealed connections; PT thread is a conical tube that relies on the deformation and sealing of the thread itself; NPT is also a conical tube with a tooth profile angle of 60 degrees, mainly used in North America
Q: How to convert pressure units: MPa, bar, psi, kg/cm ²?
A: 1MPa=10bar≈145psi≈10kg
Q:What usually causes the burnout of solenoid valve coils?
A:Incorrect voltage and hz, frequent switching, pilot head entering liquid,valve core and spring problem,environment hot,heavy vibration etc.
Q: What should be noted for pneumatic components in high temperature or extremely cold environments?
| Focus Point | High Temperature Environment Countermeasures | Extreme Cold Environment Countermeasures |
| Seals | Fluororubber, PTFE | Low-temperature nitrile, silicone rubber, polyurethane |
| Lubrication | High-temperature synthetic grease (low volatility) | Low-temperature grease (low pour point, low viscosity) |
| Air Supply Treatment | Strengthen cooling, efficient water removal | Ultra-low dew point drying (refrigeration + adsorption type), heat tracing |
| Metal Components | Reserve expansion clearance | Select materials with low-temperature toughness, prevent leakage due to cold shrinkage |
| Control Components | High heat-resistant grade coils, heat dissipation, low power consumption | Install insulation boxes, local heating, prevent cold condensation |
| Installation | Keep away from heat sources, add heat insulation plates | Avoid exposure to wind and snow, wrap with thermal insulation materials |