HGW Blog

A valve can look like an oversized fitting because its functional element is hidden inside the body. Before identifying metric threads, determine whether the component blocks reverse flow, selects between two sources or performs another control function. End connections attach the valve; they do not describe how it behaves. Define the required one-way behavior A check or non-return valve permits f

Two metal tube connections can use a nut and sleeve yet form their seals in very different ways. A 37-degree flare fitting seals against a prepared flare at the end of the tube. A 24-degree bite-type fitting uses a cutting or gripping ring that engages the tube outside diameter as the nut is assembled. That difference affects tube preparation, inspection, service, and whether parts that look simil

A one-piece hose end has its ferrule retained with the stem; a two-piece design stores stem and ferrule separately. This affects handling, inventory, and assembly error paths, but it does not make one style inherently low pressure and the other high pressure. One-piece ends simplify component pairing The attached ferrule reduces the chance of selecting a visibly similar collar from another family

Skiving is not an upgrade applied according to pressure alone. It is a controlled preparation step for a specific hose-and-fitting system. Removing cover or inner-tube material from a non-skive design can destroy the assembly just as surely as skipping a required skive. External and internal skives serve designed interfaces External skiving removes a specified length and depth of cover so the ferr

Hydraulic flanges do not improve a system merely by replacing a threaded fitting. Their benefits appear when the port, conductor, clamps, fasteners and service space are designed as one joint. For large mobile and industrial lines, that design can simplify assembly while keeping the pressure boundary inspectable. Use a flange where rotation creates the problem Rigid pipe and tube cannot always rot

If a four-bolt flange does not align with a port, the correct response is to stop. Filing holes, substituting bolts, thinning a head, or forcing clamps changes a pressure boundary without engineering verification. Code 61 and Code 62 are different systems SAE Code 61 and Code 62 flange patterns can appear close, but bolt spacing, flange head dimensions, clamps, fasteners, O-ring geometry, and rati

A hydraulic flange is often the better connection when a large or rigid conductor must meet a component port without rotating the tube, hose or fitting body. The flange head can be placed at the port and clamped, which changes the installation and service problem. Pressure alone does not decide the choice. Geometry, access, loads and the governing connection standard matter together. Start with th

Hydraulic flanges are valuable where a threaded connection would be difficult to install, heavily loaded or impractical at a larger conductor. They provide a removable joint at pumps, motors, valves, manifolds, hose ends and tube or pipe assemblies. Selection should start with the existing port and installed load, not a universal pressure or tube-size threshold. Identify the connection family at t

A hydraulic flange blank closes a port by presenting a solid pressure boundary in place of a through-bore connector. It can isolate an unused pump or manifold port, support a controlled service configuration or close a line end designed for that flange system. It must not be confused with a plastic dust cap or shipping protector. Define whether the closure holds pressure A protective cap keeps dir

ORFS geometry can control leakage by compressing an O-ring between flat faces, but the seal is only one component in the pressure boundary. The fitting body, nut, tube or hose end, material, routing and mating port must support the same service. Selection should begin with the circuit rather than with a promise that one connection style is always best. Confirm the interface and conductor Identify