Prepare to install the required tools

One、Prepare to install the required tools

Cleaning and spinning firmware requires a variety of specific tools，In addition，In addition。

The following equipment should be prepared before installation:

>Calibrated torque wrenches, hydraulic screwdrivers, or other tightening tools;

>Steel wire brush, brass brush better；

>helmet

>Eye protector eyes

>lubricant

>Other factories specify tools, etc

Two、Steps for mounting the gasket

1.Steps for mounting the gasket

>Remove all foreign impurities and debris from gaskets, fasteners, nuts and gaskets；

>Check fasteners, nuts and gaskets for burrs, cracks and other defects；

>Check Integral Flange for warping, radial scratches, deep tool bumps, or other tightening tools；

>Check Blind Flange for warping, radial scratches, deep tool bumps, or other defects that affect proper seating of gaskets；

>If the defective parts are found, they should be replaced in time. If you have any questions about whether to replace them, you can contact the sealing manufacturer in time；

2.To justify the flange

>Align flange face and bolt hole

>Reports should be submitted in a timely manner in cases where no positive information is available

3.Install the gasket

>Make sure the gasket conforms to the specified size and material;

>Check the gasket to make sure there is no defect

>Carefully insert sealing gasket between two flanges

>Make sure the gasket is centered between the flanges

>Do not use the adhesive or anti - adhesive unless it is required in the gasket installation instructions

>Align the flange surface to ensure that the gasket is not punctured or scratched.

4.Lubricated bearing surface

>Only specified or approved lubricants are allowed in the lubricating bearing area;

>Apply enough lubricant to all threaded, nut and gasket forces

>Ensure that lubricant does not contaminate flange or gasket surfaces

5.Install and tighten bolts

>Always use the right tools

Use a calibrated torque wrench or other tightening tool that controls the function;

>Consult the technical department of the sealing manufacturer about torque requirements and regulations;

>Tighten the nut in accordance with the cross - symmetry principle;

Tighten the nut in the following 5 steps:

The first step:The initial tightening of all nuts is done by hand, the larger nuts can be assisted by a small manual wrench;

The second step:Tighten each nut approximately 30% of the total torque required;

The third step:Tighten each nut roughly 60% of the total torque required;

  Note:Large diameter flanges can be used more times for the above steps;

Step 5:Tighten all the nuts clockwise at least once to achieve all the required torque.

6.Tighten the bolt again

>Pay attention to:Consult the technical department of the sealing manufacturer for guidance and advice on retightening bolts;

>Non-asbestos gaskets and gaskets with rubber composition that have been used at high temperature shall not be tightened again (except as otherwise provided)

>The fasteners receiving the corrosion heat cycle need to be tightened again;

>The re-tightening should be done at ambient temperature and atmospheric pressure