Online shop

Our online shop is designed for individual customers and those looking to purchase samples for quick couplings and other our products.

Due to delivery challenges, we currently only ship to the USA, Canada, Australia, and New Zealand. Unfortunately, we are unable to deliver to other countries at this time due to tax regulations, customs clearance, and other logistical issues.

Due to U.S. tariff regulations, a 35% tariff applies to purchases made through our website for U.S. customers. We recommend comparing the total cost with our Amazon store. If we have stock available in Amazon’s warehouse, purchasing through Amazon may be a more cost-effective option.

Why prices are cheap?

This is a strange question and we have had quite a few site visitors leave us with this strange question. We were thinking, is it bad to be cheap? But we know their concerns. It’s the worry about quality. This one we have to say starts with our pricing method. We are a direct manufacturer, so we sell to actually some wholesalers and equipment manufacturers. So we calculate the price from the cost. The price is calculated from the ex-factory price. That’s why we always have problems with our pricing. We try to price as much as we can without disrupting the market. So we try to mark up the price by 2-3 times. We standardize a base B-side price when the quantity reaches the minimum B-side customer minimum MOQ. We understand that a price that is too low will affect other dealers or other sellers. So we will check some prices on other websites and will not sell too low. As an analogy, on some websites, the price of female push-pull quick coupler reaches more than 20 euros, while in fact, we sell to our dealers in bulk prices, a set of push-pull quick couplings is around 3.5-4 US dollars. That’s why we don’t know how to price them. And for 1-2 sets, with the shipping fee, we think the price would be similar.

How to buy correct quick coupling

For the vast majority of quick coupling purchasers, their typical need is to replace damaged or aging quick couplings on their current equipment. They can identify compatible replacements based on known specifications such as ISO standards, connection types, application environments, functional requirements, material compositions, or thread parameters. Our website’s menu system allows users to navigate through categorized listings and apply detailed filters to locate interchangeable products.

When selecting quick couplings for product design, critical application parameters must guide the decision-making process:

Material Selection Based on Fluid Media

Different fluids require specific coupling materials and seal compounds, with cost considerations playing a significant role. Our material compatibility chart (available for download) assists in proper selection, though direct consultation is recommended for complex applications.

Our production focuses on metallic couplings using:

Primary materials: Carbon steel, stainless steel, brass
Specialty options: Aluminum alloys, tool steels
Seal materials feature specialized elastomers with distinct performance characteristics:
Common: Nitrile (NBR), Fluorocarbon (FKM)
Specialized: EPDM, Neoprene (CR)
Premium: Perfluoroelastomer (FFKM) for extreme conditions

Pressure Rating Considerations

In most hydraulic circuit applications, the choice of working pressure and burst pressure needs to be carefully considered. However, many quick coupling users have a common misconception that products of the same standard have identical design working pressures. While the working pressure can be found in international standards such as ISO 7241, this only represents the minimum requirement set by the standard. In reality, due to differences in design among manufacturers, the actual working pressure can vary. Typically, a manufacturer’s specified working pressure is higher than the standard requirement.

For safety considerations, manufacturers typically set the working pressure at about 1/4 to 1/3 of the burst pressure and conduct 10,000 cycles of pressure testing to verify it. In practice, the actual working pressure can be increased by 10%-15% above the rated value. As a result, many genuine manufacturers specify a working pressure that exceeds the minimum requirement set by ISO standards. Operating at a slightly higher pressure does not compromise the service life of the quick coupling.

Additionally, working pressure varies depending on the application and testing conditions. Some applications, such as agricultural machinery, involve frequent pressure fluctuations, whereas others, like hydraulic jacks, have a more stable pressure output. Because of these differences, the pressure testing methods for these applications differ, leading to significant variations in the rated working pressure even for couplings made from the same material (e.g., carbon steel).

However, if the operating environment changes, a quick coupling originally rated for a higher working pressure may no longer meet the requirements in a different application. For example, a quick coupling rated for 720 bar in a hydraulic jack application may only be suitable for 350-400 bar in agricultural and forestry machinery. Therefore, when selecting a quick coupling, users should not rely solely on the working pressure rating. It is essential to consult the manufacturer to ensure compatibility with the intended application.