Product Description


1. Poppet valves available to prevent uncoupled leakage
2. Ball valves available for rugged dependability in heavy-duty hydraulic applications, within rated working pressure
3. Critical parts are induction hardened for durability
4. Dependable ball-locking mechanism holds the mating halves together
5. Socket and plug are precision machined from CZPT bar stock
6. KZE Series couplings interchange with couplings meeting ISO 7241-1, Series B.

This Series brings to the industry a proven sesing for use on construction equipment, forestry equipment, agricultural machinery, oil tools, steel mail machinery, and other demanding hydraulic applications.

Body size (in)
1/4 3/8 1/2 3/4 1
Rated Pressure (Bar)
350 300 300 250 200
Material: Carbon steel
Standard seal material: NBR (other material is available on request)
Temperature Range (Std seals): -20°C to +80°C


Part No. Thread size BSPP E
Overall Length (mm.)
Size (mm.)
Largest Diameter (mm.)
Part No. Thread size NPT E
Overall Length (in.)
Largest Diameter (in.)
KZBSS-01SF G1/8 48.0 17.0 24.0 KZBSS-N01SF NPT1/8 1.90 0.68 0.96
KZBSS-02SF G1/4 57.0 21.0 29.0 KZBSS-N02SF NPT1/4 2.26 0.81 1.14
KZBSS-03SF G3/8 63.0 22.0 36.0 KZBSS-N03SF NPT3/8 2.49 0.88 1.40
KZBSS-04SF G1/2 73.0 28.0 45.0 KZBSS-N04SF NPT1/2 2.87 1.12 1.77
KZBSS-06SF G3/4 90.0 33.0 54.0 KZBSS-N06SF NPT3/4 3.56 1.31 2.14
KZBSS-08SF G1 106.0 41.0 64.0 KZBSS-N08SF NPT1 4.18 1.62 2.52
KZBSS-10SF G1 1/4 115.0 54.0 79.0 KZBSS-N10SF NPT1 1/4 4.53 2.13 3.11
KZBSS-12SF G1 1/2 124.0 63.0 79.0 KZBSS-N12SF NPT1 1/2 4.88 2.48 3.11
KZBSS-16SF G2 132.0 77.0 109.0 KZBSS-N16SF NPT2 5.20 3.03 4.29

About our company:  
HangZhou HI-TECH SMART MACHINERY CO LTD was established in 2013, is a high tech company specialized in pneumatic components and microduct accessories manufacturing. After years’ hard working, it has owned 2 factories now, and the products include pneumatic vibrators, air cylinders, solenoid valves, air treatment units, pneumatic fittings&mufflers, microduct connectors and other accessories. We have sold our goods to more than 60 countries, and that number is still increasing.
 Our Services & Strength
1. We have more than 10 years experience on pneumatic products;
2. Excellent quality control has always been the goal of our practice;
3. You can purchase most of the pneumatic products here;
4. Sample orders and orders with a small number of products are acceptable;
5. OEM, ODM is ok for us. Not only the label and packaging, but also the personalized customization of the product itself;
6. Any requirements, just feel free to let us know.

Company frofile
Our company is specialized in manufactuing all kinds of valves,hydro-pneumatic components,alumium parts and plastic parts.Our main products are including pneumatic cylinder,solenoid valve,air filter,air regulator,air lubricator,pneumatic fitting,hydraulic fitting,tubes below;
           *ISO Standard Cylinder:DNC/SI(ISO6431&6432)
           *Standard Cylinder:SC/SU,
           *Mini Cylinder:MAL,MA,,MI,CJ2B,CDM2B
           *Compact Cylinder:SDA,CQ2
           *Solenoid Valve:3v1,3v,4v,4M,3A,4A ,drain valve etc
           *Air Source Treatment Unit:A,HA,HNA,T,A/B,etc
           *pneumatic accessories:fitting,hand valve,muffler,tube,pressure switch
          *Pneumatic Vibrator: GT series,K seies,R series,SK series,FP series,NTP series etc.

Shipping Cost:

Estimated freight per unit.

To be negotiated
Material: Carbon Steel
Temperature Range (Std Seals): -20°c to +80°c
Materials: Carbon Steel


Customized Request


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.
China Custom Kzbss Series Hydraulic Quick Couplings(Stainless Steel   coupling and uncouplingChina Custom Kzbss Series Hydraulic Quick Couplings(Stainless Steel   coupling and uncoupling
editor by CX 2023-07-11