Flange Insulation Kits Applicable Standards

Flange insulation Kits Applicable standards:

Flange is the most common trouble area, need to be sealed to prevent its leakage, but also must be insulated, to prevent the leakage of weak current generated by the ionization effect of corrosion flange, Flange Insulation Kits resulting in flange metal pipe rust leakage. The company is able to produce and stabilize a wide range of quality products and technical support to help solve most of the flange sealing and flange insulation problems.

The company can provide complete insulating pads and accessories for all kinds of insulating pads according to customers ' needs.

Flange Insulation KIT Product Specification:

The company can provide a whole set of flange insulation system, including insulating sleeve and gas gasket.


Type DAD type gasket specially designed to fit the convex flange in the ring groove. D-type insulating gaskets are prepared using a special hybrid medium. Fiber reinforced phenolic materials, Flange Insulation Kits and the size of the gasket the United States National Standardization Organization (ANSI) standard requirements. Suitable for use with ellipse and octagonal metal ring pads. The pressure is 15 000p.


Type E E Type gasket: The type of gasket with the same flange size. Bolt holes with the same specifications on the flange surface. Such a design is convenient for the flange bolt hole. Flange Insulation Kits The gasket surface is tightly bonded to the flanged surface. Prevent voids from being produced. The e-type gasket can be used in the plane flange and the nonmetal flange parts.


Type Fef type gaskets are more affixed to the flange surface when used. The effect of the convex flange is prominent. The F-type gasket has no bolt hole. Flange Insulation Kits The diameter of the bolt hole is slightly smaller than the outer diameter of the washer. To ensure tight installation.


The structure of old insulating flange is improved. In the urban gas transmission and distribution project, the characteristics of the low pressure (pn ≤ 2.5MPa) and the pressure pn ≤ 0.4MPa of the pipeline network are improved. In the pipeline network transmission and distribution project, the steel flat flange is used instead of the butt welding plane flanges, flange insulation gaskets using PTFE, oil-resistant rubber asbestos tablets, neoprene and other materials manufacturing, while the fastening bolts of insulation and insulation pads will be two A, and shorten the insulation cover half of the overall high strength insulation cushion. As shown in Fig. 2, the bolt hole of the steel flange is extended to be able to wear an insulating cushion; In order to ensure that the diameter of the sleeve cushion suitable for the original steel flange used bolts, so that a special role of the steel flange, assembled into a new type of insulating flange, the structure of the installation as shown in Fig. Flange Insulation Kits 3 and 4. It can be installed separately, can also be connected with the valve installed together, not only the cost of the project, but also save the site installation location, is a simple application of a new type of insulating flange, and the cost is particularly low.

The working principle of insulating flange is to conduct electrical insulation on both sides of insulating flanges by insulating gasket and high strength insulating cushion. According to the engineering practice, we test the insulation performance of the insulating flange according to the requirements in the design technical specification for insulating flanges (Sy T0516-1997) and the relevant methods in the test method for cathodic protection parameters of buried steel pipelines (Sy 23-86). The test results show that the resistance value between insulating gasket and insulating sleeve of fastening bolts can meet the standard requirement.