China wholesaler CZPT Push in Quick Release Coupler Coupling ISO 7241A 1″G coupling definition

Product Description


ISO 7241A — NWA series quick coupling (steel)


Product Description

Product Feature

1.Meet the standard ISO 7241-A 
2.Streamline valve with small pressure drop
3.Standard material:carbon steel
4.Standard seal:nitrile rubber,fluoride rubber

Seal elastomer data
Seal      Maximum working temperature range
Nitrile rubber   -20ºC to +100ºC
Fluoride rubber -25ºC to +150ºC

Product Parameter


Max Working Pressure
Rated Flow
 Min Blast Pressure
Fluid Loss(ml-cc)
connection connection male female
1/4 6.3 315 12 1450 1510 1760 0.5
3/8 10 315 23 1590 1470 1520 1.9
1/2 12.5 250 45 1240 1000 1460 2.7
3/4 20 250 106 1040 900 1530 9.3
1 25 200 189 1300 1300 960 16
1-1/4 32 200 288 1090 1140 850 30
1-1/2 40 160 379 820 810 790 54
2 50 100 757 1100 650 960 120

Application Range



Hydraulic & fluid delivery
Agriculture machine
Building equipment
Touring car,snow clearer truck and maintenance truck
Factory manufacturing





FASTER        ANV series
STUFF          H-1500 series
PARKER        6600 series
AEROQUIP    FD56 series(5600 series)



Photos Of Different Sizes


Connection: Push in
Material: Carbon Steel
Standard: ISO 7241A
Transport Package: Wooden Case/Pallet with Carton Inside
Specification: 1"(from 1/4′′ to 2′′)
Trademark: NAIWO
US$ 0/Set
1 Set(Min.Order)

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What Is a Coupling?

A coupling is a device that connects two shafts together. It transmits power from one to the other and is used to join rotating equipment. It can also allow for some degree of misalignment and end movement. It is used in mechanical engineering and manufacturing. To learn more about couplings, read this article.
Mechanical connection between two objectsThe present invention relates to a method and assembly for forming a mechanical connection between two objects. The methods of this invention are suitable for connecting both solid and hollow objects. For example, the method can be used to make mechanical connections between two cylinders. This method is particularly useful for connecting two cylinders that are positioned near each other.

Absorbs vibration

A coupling insert is a part of a vehicle’s drivetrain that absorbs vibrations. These inserts are designed to prevent couplings from moving out of phase. However, the coupling inserts themselves can wear out and need to be replaced. Universal joints are an alternative if the coupling is out of phase by more than one degree. In addition, internal bearings in the coupling need to be lubricated and replaced when they begin to show signs of wear.
Another embodiment of the invention includes a flexible coupling 25 that includes rearwardly-extending lugs that extend toward the coupling member 23. These lugs interdigitate with corresponding lugs on the coupling member 23. They are spaced circumferentially. A first elastic member 28 is interposed between lugs 26 and 27, and is adapted to yield in a counterclockwise direction. As a result, it absorbs torsional vibrations.

Blocks heat transfer

Thermal coupling occurs when a solid block is thermally coupled to the air or fluid passing through it. The amount of heat transferred through a solid block depends on the heat transfer coefficients of the materials. This paper presents a numerical model to understand how heat transfers through different block materials. This work also describes the thermal resistance network for a one-dimensional block.
In some cases, thermal coupling increases the heat transfer mechanism. As illustrated in FIG. 1D, a heatpipe coupler 112 couples two heatpipes 110-1 and 110-2. This configuration allows the pipes to be coupled to the heat source and to the condenser. In addition, the heat pipe couplers may have bellows at the ends to help facilitate linear motion.
Thermal coupling is achieved by ensuring that at least one block is made of a material with a lower thermal expansion coefficient than the annulus. Ideally, the block’s mean thermal expansion coefficient is at least twenty percent lower than the annulus’s mean thermal expansion coefficient. This ensures that the thermal coupling between the two parts is as efficient as possible.
Another type of thermal coupling is achieved by using flexible elements. These are often washers or springs. These components allow the blocks to maintain physical contact with the post 55, which means that the heat transfer is more efficient even at higher temperatures. The flexibility of these elements also makes it possible to choose an element that will not impede assembly.

Protects rotating equipment

A reliable, long-lasting coupling system can reduce the risk of damage to rotating equipment. Designed to protect against torque overload and wear, Voith torque-limiting couplings provide outstanding safety and reliability. As a result, they can deliver maximum performance and minimize equipment downtime. In addition to their long-term benefits, these solutions are ideal for applications where safety and reliability are of paramount importance.
A good coupling provides many advantages, including the ability to transmit power, compensate for axial movement, and absorb shock. It is essential to choose the proper coupling for your application based on the basic conditions of your rotating equipment. For example, if you have two shafts with parallel rotation axes, you should choose a parallel coupling. Otherwise, you should use an angular coupling.
Torque-limiting couplings can also provide protection for rotating equipment by disengaging at a specific torque level. This protects the drive shaft from undergoing catastrophic failure. Torque limiters are particularly helpful for high-value equipment. By preventing catastrophic failure, you can avoid expensive repairs and minimize equipment downtime.
Coupling guards are easy to install and provide effective protection for rotating equipment. These covers are made of sheet metal bent to fit over the shaft. They are durable and easy to remove when necessary. This type of guard can prevent employees from catching their hands, tools, or loose clothing on motor coupling components.

editor by CX 2023-04-27

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