Do you really know quick couplings?

Quick couplings are divided into quick couplings according to application types: quick couplings for air, quick couplings for oxygen fuel gas, common quick couplings for gas and liquid, quick couplings for oil pressure, quick couplings for inert gas, quick couplings for cooling water and temperature oil, semiconductor quick couplings and wrenches Handle quick connector

This time the editor mainly introduces the wrench type quick couplings used in petrochemical industry, which are also cam lock quick couplings.

Pull-type quick couplings are suitable for industrial, chemical, liquefied petroleum gas, vehicle and ship manufacturing equipment, etc. It can transport a variety of fluid media such as gasoline, heavy oil, kerosene, hydraulic oil, fuel oil, refrigerating oil, water, salt water, acidity and alkalinity.

【Technical Parameters】

l Standard: American standard AA59326, European standard EN14420-7/DIN2828, national standard GBT16693

l Thread standard: NPT/BSP/G

l Common ID size: 1/2"(DN15)-10"(DN250)

l Working pressure: low pressure 1Mpa-2Mpa

l Applicable temperature: -20~150℃

l Connection methods: thread, welding, flange, quick connection, wrench type, etc

l Materials are mainly aluminum alloy, brass and stainless steel:

-Aluminum alloy materials are mainly used in low-demand fluids such as fresh water or oil-water mixtures. Advantages and low cost. Disadvantages, not resistant to corrosion, easy to mildew and oxidize.

-Brass material is mainly used in salt water and any medium other than acid and alkali. It is often used in the shipbuilding industry, deep well operations and flammable conditions. Advantages, constant metal properties, good electrical conductivity, seawater resistance, and easy assembly. Disadvantages, high cost

-Stainless steel material is used in acid and alkali media, 316 material is more obvious. Disadvantages, high cost

l Type: Type A, Type B, Type C, Type D, Type E, Type F, Type DC, Type DP, among which Type A, Type E, Type F, and Type DP are male; Type B, Type C, D type and DC type are female

A型 Type A

B型 Type B

C型 Type C

D型 Type D

E型 Type E

F型 Type F

DC型 Type DC

DP 型Type DP

Features:

l Saving time and effort: When disconnecting and connecting the oil circuit through the quick connector, the action is simple, saving time and manpower

l Fuel saving: When the oil circuit is broken, the single valve on the quick connector can close the oil circuit so that the oil will not flow out and avoid the oil pressure loss

l Environmental protection: When the quick connector is broken and connected, the oil will not spill and protect the environment.

l Equipment design is unique and easy to transport: large equipment or hydraulic tools that need to be easily carried, use quick connectors to disassemble and transport, and then assemble and use after reaching the destination

l All the above advantages have created economic value for customers

Selection principle:

1. The type and temperature of the fluid (please select the quick coupling suitable for the type and temperature of the body material and the sealing material) according to the fluid, the suitable body material and sealing material are different. For example, the quick connector is air. We recommend steel ones, and brass or stainless steel ones for water

2. The pressure of the liquid (please choose a quick coupling suitable for the pressure resistance of the fluid pressure) The pressure of the fluid is also the key to selecting the quick coupling

3. The use environment of the quick coupling (please select the structure and material of the quick coupling suitable for the use environment). Consider the type and body of the selected quick coupling in combination with the humidity conditions, dust conditions, and easy corrosion of the use environment. Material, sealing material.

4. Confirm that the selected quick connector connection threads should be consistent. In the process of using different brands of products, it is best to use the same brand of female and male connectors. If you must cross-use, it is best to consult the product supplier before use. Technicians, use it after confirmation

5. The shape and size of the installation (please order the product after confirming the final shape and size). Please confirm the type and material of the quick connector, and specify the assembly shape and size of the corresponding piping characteristics. Please note that size is related to fluid flow

Precautions for using quick connectors:

1) Do not use fluids other than applicable fluids

2) Do not exceed the maximum operating pressure limit during use

3) Do not use it outside the operating temperature range to prevent wear or leakage of the sealing material

4) Don't hit, bend or stretch artificially to prevent damage.

5) Do not use in places mixed with metal powder or sand to prevent poor work or leakage

6) For threaded installation, do not exceed the maximum tightening torque during installation to prevent damage

7) Do not use hoses with cracks to prevent leakage or falling off.

8) If it is used in a machine subject to vibration or impact, the durability will be reduced.

9) The fluid used must be a clean fluid filtered by a filter

10) Do not disassemble the quick connector