All or part of the components are immersed in oil so that the equipment cannot ignite electrical equipment above the oil level or outside of the enclosure.
2, sand filling type (indicated by the letter "q")
The shell is filled with sand material so that, under the specified conditions of use, the arc generated in the shell, the propagating flame, or the overheating of the surface of the shell wall or grit material does not ignite the electrical equipment of the surrounding explosive mixture.
3, no spark type (indicated by the letter "n")
Under normal operating conditions, the surrounding explosive mixture will not ignite, and generally no ignited electrical equipment will occur.
4, pouring type (indicated by the letter "m")
There may be arcs, sparks, or high-temperature portions of the explosive mixture that ignite the encapsulant, so that he cannot ignite the surrounding explosive mixture.
5, airtight type (indicated by the letter "h")
A sealed enclosure that is sealed by melting, squeezing, or gluing. This enclosure prevents gas outside the enclosure from entering the enclosure.
6, explosion-proof type (indicated by the letter "d")
An electrical device with a flameproof enclosure that withstands the explosive pressure of an explosive gas mixture inside and prevents the internal explosion of the electrical device from exploding into the explosive mixture around the enclosure.
7, increased safety type (represented by the letter "e")
Under normal operating conditions, arcs, sparks, or equipment that may ignite the high temperature of the explosive mixture are structurally designed to increase the degree of safety to avoid electrical devices that exhibit these phenomena under normal and recognized overload conditions.
8, wood safety type (indicated by the letter "i")
Neither the spark nor the thermal effect produced under normal operation or in the specified fault condition or short circuit can ignite the circuit equipment of the explosive mixture.
9, positive pressure type (indicated by the letter "p")
An electrical device with a positive pressure enclosure that maintains the pressure of the internal protective gas above the pressure of the surrounding explosive atmosphere and prevents the external mixture from entering the enclosure.
Plastic Waterstop Seal provides water barrier across all joints in concrete structures by placing Water Stops into edges of adjacent concrete components. Water Stops are essential for use in all water retaining and water excluding structures, being capable of withstanding water pressure from either internal or external face.
Rubber Water-Stop Belt utilizes the rubber is high elasticity and the compression deformation characters, have the elastic deformation under each kind of load, thus to effective fastening seal, guards against infiltrates and leaks. It has high elasticity, ageing resistance, low compression deformation and good tearing strength performance.
Features of waterstop
1. The waterstop will expand when getting in touch with water, so allowing it to come into closer contact with the concrete, creating a better water-stop result.
2. Different thicknesses structure of waterstop is adopted for the cross section, which is divided into the high-strength area, the waterproof area and the installation area, allowing for uniform and reasonable stress for all portions.
3. There is installing hole at installation area of waterstop, it could facilitate fixed with adjacent reinforced, and not produce shifting. Construction of our Rubber Water stop is convenient
rubber Water-Stop Belt function: mainly used for the tunnel and bridge project,such as the overpass ,water and electricity projects etc.
two types:1 affixed to the back-half hole in the middle
2 embedded in the middle with hole
features: good flexibility; strong ability to adapt to the deformation;simple structure;reliable water tight seal.
specifications:back-paste-type;buried-in-type
concrete specifications can be requested by client.
Water-Stop Belt,Rubber Water-Stop Belt,Pvc Water-Stop Belt,Water-Stop Belt For Building
Shandong Tianhai New Materials Engineering Co., Ltd , https://www.chinatinhy.com