304 connector

Name304 connector

Material:304 stainless steel

Installation method: card sleeve type

Purpose:304 connectorUsed for merging two gases into one or splitting one gas into two, with dual card sleevesAB type seal, easy to install, good sealing performance.

Overview of card sleeve connector:

The sleeve type pipe joint consists of three parts: the joint body, the sleeve, and the nut. When the card sleeve and nut sleeve are inserted into the joint body on the steel pipe and the nut is tightened, the outer side of the front end of the card sleeve is in contact with the conical surface of the joint body, and the inner blade is evenly bitten into the seamless steel pipe, forming an effective seal. It is easy to install and has high pressure resistance, making it widely used.

Advantages of card sleeve connectors:

The card sleeve connector has the characteristics of reliable connection, high pressure resistance, temperature resistance, good sealing and repeatability, easy installation and maintenance, and safe and reliable operation.

Working principle of card sleeve connector:

The working principle of the card sleeve joint is to insert the steel pipe into the card sleeve, lock it with the card sleeve nut, resist the card sleeve, and cut into the pipe to seal it. It does not require welding when connected to steel pipes, which is beneficial for fire prevention, explosion prevention, and high-altitude operations, and can eliminate The drawbacks caused by careless welding. Therefore, it is a relatively reliable connecting component in the piping of automatic control devices in refining, chemical, petroleum, natural gas, food, pharmaceutical, instrumentation and other systems. Suitable for oil, gas, water and other medium pipelines connection

How to connect the card sleeve connector:

1、 Overview of card sleeve connector

The sleeve type pipe joint consists of three parts: the joint body, the sleeve, and the nut. When the card sleeve and nut sleeve are inserted into the joint body on the steel pipe and the nut is tightened, the outer side of the front end of the card sleeve is in contact with the conical surface of the joint body, and the inner blade is evenly bitten into the seamless steel pipe, forming an effective seal.

2、 Assembly and installation of card sleeve connectors

1. Saw off seamless steel pipes of appropriate length and remove burrs from the ends. The end face of the steel pipe should be perpendicular to the axis, with an angle tolerance of no more than 0.5 degrees. If the steel pipe needs to be bent, the length of the straight section from the end face of the steel pipe to the bending part must not be less than three times the length of the nut.

2. Insert the nut and sleeve onto the seamless steel pipe. Pay attention to the direction of the nut and sleeve, and do not install them upside down.

3. Apply lubricating oil to the threads and sleeves of the pre assembled joint body, insert the steel pipe into the joint body (make sure the steel pipe is inserted to the bottom), and tighten the nut by hand.

4. Tighten the nut until the sleeve grips the steel pipe, and this turning point can be felt by increasing the tightening torque (pressure point).

5. After reaching the pressure point, tighten the nut by 1/2 turn.

6. Remove the pre assembled connector body and check the embedding of the blade edge of the card sleeve. The visible protrusion must fill the space at the front end of the card sleeve. The card sleeve can rotate slightly, but cannot move axially.

7. Final installation: Apply lubricating oil to the threads of the joint body during actual installation, tighten the nut and tighten it until the noticeable tightening force increases, and then tighten it by 1/2 turn to complete the installation.

Repeated installation:

All card sleeve connectors can be reinstalled multiple times, but it is important to ensure that the parts are undamaged and clean.

1. Insert the steel pipe into the joint body until the sleeve fits snugly against the conical surface of the joint body, and tighten the nut by hand.

2. Tighten the nut with a wrench until the tightening torque increases sharply, then tighten it by 1/4 to 1/2 turn.

check

Disassemble the steel pipe to check if the assembly meets the requirements: there should be a uniform slight protrusion on the steel pipe at the end of the sleeve. The card sleeve cannot slide back and forth, but slight rotation is allowed.

Reason for leakage:

1. The steel pipe is not fully inserted

2. The nut is not tightened

3. Scratches on the outer surface of the steel pipe or the steel pipe is not round.

4. The steel pipe is too hard.

Explanation: Both ends are sealed with nuts and double card sleeves. If additional nuts and double card sleeves are required, they can be purchased separately.