1f-12 Orfs Male Flat Seat Double End Adapter-American Fitting
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White o...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White o...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White o...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White o...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White o...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Model No.: 1E. 1E9.AE.2E9.4E.9E.1EH.1EH9-OGMaterial: Carbon Ste...
Product Descriptionhydraulic adaptor metric male O-Ring flat sealing pipe fittings Material: Carbon Steel, Stainless SteelSurface Treatment: White...
Our 10 years of customisation experience has created the OPK Fitting brand value.




Suppose a newly delivered hose assembly threads onto the pump port for three turns and then binds. Forcing it a little more creates a connection that looks right but leaks as soon as the system reaches operating pressure. In field service, mismatched hydraulic fitting threads cause leaks, stripped ...
View MoreA hydraulic hose bursts on an excavator arm at mid-morning. The spare fitting in the toolbox looks exactly like the damaged one, but it will not thread on. Identifying hydraulic fittings correctly is what separates a 20-minute repair from a half-day hunt for the right adapter. Most hydraulic fittin...
View MoreWhen a Look-Alike Fitting Costs You Downtime During a routine hose replacement on an excavator, a maintenance crew fitted a replacement that looked identical to the old one: same hex size, same thread pitch reading on a simple gauge. The circuit leaked as soon as pressure passed 200 bar. The replac...
View MoreHydraulic adapters are essential components used to connect different types of hydraulic hoses, pipes, and fittings within a hydraulic system. They ensure secure sealing and efficient fluid transmission, even under high pressure conditions that can reach up to 700 bar (10,000 PSI).
These adapters help solve compatibility issues between different thread types and sizes, making them indispensable in modern hydraulic applications.
Hydraulic systems often use different standards such as BSP, NPT, and JIC. Adapters allow seamless connection between these incompatible threads, improving system flexibility.
A properly selected hydraulic adapter can reduce leakage rates by over 90% compared to poorly matched fittings, ensuring system safety and efficiency.
By minimizing pressure drops and turbulence, adapters help maintain stable flow rates, which can improve overall system efficiency by 5–15% in high-performance systems.
| Type | Material | Application |
|---|---|---|
| Straight Adapter | Carbon Steel / Stainless Steel | Connecting same-direction fittings |
| Elbow Adapter | Carbon Steel | Changing flow direction (45°/90°) |
| Tee Adapter | Stainless Steel | Splitting or combining fluid flow |
Hydraulic adapters are widely used across multiple industries. Their durability and precision make them suitable for demanding environments.
In heavy-duty machinery, adapters are expected to withstand vibration, temperature fluctuations, and pressure surges exceeding 500 bar.
About OPK Fitting
OPK FITTING Hydraulic Equipment Factory is a specialized domestic factory with hydraulic pipes and adaptors production experience. Our managing scope relates to various fields such as hydraulic systems etc.; Including all kinds of materials with different pressure levels, flexible hydraulic hoses with various size criteria, hose fitting, adaptor, etc. They have been respectively applied in the hydraulic and fluid conveyance systems of industries, such as machinery, metallurgy petroleum, construction, ships, space-flight, agriculture, pharmaceutical, food, and so forth.
Over 10 years of experience. A team of skilled design professionals and talent. Excellent product quality and thoughtful customer service.
For example, in a system operating at 300 bar, the adapter should have a rated pressure of at least 375 bar to ensure safety.
Q1: What materials are hydraulic adapters made of?
Most hydraulic adapters are made from carbon steel, stainless steel, or brass, depending on application requirements.
Q2: How do I know which adapter size to choose?
You should match the thread type and size of your hose or pipe, and ensure compatibility with system pressure and flow requirements.
Q3: Can hydraulic adapters handle high pressure?
Yes, high-quality adapters can handle pressures up to 700 bar or more, depending on design and material.