RASTELLI / Rastelli Raccordi Hydraulic Fittings and Tube Connectors

Italian hydraulic tube connectors and fluid fittings RASTELLI / Rastelli Raccordi: DIN 2353 cutting ring fittings, SAE J514 flared adapters, BSPP threaded couplings, high-pressure hose fittings, and RR-FORM cold forming machinery. Engineering selection by equipment nameplate.

RASTELLI DIN 2353 / ISO 8434-1 Cutting Ring Fittings

RASTELLI / Rastelli Raccordi bite-type tube fittings comply with DIN 2353 and ISO 8434-1 standards. The mechanical assembly comprises a fitting body, cutting ring, and union nut, ensuring leak-tight fluid conveyance under hydraulic pressures up to eight hundred bar without welding.

Extra light LL, light L, and heavy S pressure series matching rigid steel piping
Controlled cutting edge penetration creates a solid retention collar on the tube
Zi-Ni Total Screen passivation prevents corrosion in demanding salt spray tests
Manufactured in carbon steel and grade AISI 316Ti austenitic stainless steel

RASTELLI SAE J 514 (JIC 37°) Flared Tube Fittings

RASTELLI / Rastelli Raccordi flared tube fittings are manufactured in compliance with SAE J 514 and ISO 8434-2 standards featuring a thirty-seven degree cone. Metal-to-metal seating against flared seamless tubing provides leak-free operation in high-vibration fluid systems.

Thirty-seven degree flared seating area ensuring metal seal along fluid passages
Fine pitch UN and UNF threads providing controlled tightening torque on machines
Exceptional endurance against fluid pressure spikes in mobile power machinery
Configurations include straight connectors, ninety degree elbows, tees, crosses

RASTELLI Industrial Hydraulic Threaded Adaptors

RASTELLI / Rastelli Raccordi hydraulic threaded adaptors enable dependable connectivity between pumps, valves, hydraulic motors, and piping networks. The line encompasses sixty degree BSPP cone adaptors, conical BSPT threads, and American national taper pipe threads.

BSPP parallel threads with precision internal sixty degree mechanical seat cones
Tapered thread profiles in BSPT and NPT providing dryseal fluid port closure
Thread reducer fittings bridging dissimilar international coupling standards
Swivel nut union adapters facilitating rapid alignment in compact machinery bays

RASTELLI High Pressure Hose Couplings and Fittings

The flexible hose coupling portfolio from RASTELLI / Rastelli Raccordi is engineered for fluid power lines subject to harsh dynamic pressure pulses. The fittings are available in Standard series and heavy Interlock configurations for multi-spiral hydraulic hose assemblies.

Interlock skirt design requiring dual internal and external hose skiving cuts
Serrated tail profiles biting into internal steel reinforcement braid layers
Wide selection of terminations including DIN 2353 cones, JIC 37°, and SAE flanges
Resilient grip preventing fitting blowout during sudden hydraulic hammer peaks

RASTELLI RR-FORM Tube Forming Machines and TN Devices

The production machinery lineup by RASTELLI / Rastelli Raccordi features RR-FORM tube cold-forming systems, pneumatic pre-assembly machines TN 294A, hydraulic devices TN 285A, and pipe benders TN 362. This tooling guarantees factory repeatability on hydraulic tube joints.

RR-FORM cold-forming process shaping retention collars on tubes without chips
Pneumatic pre-assembly tools TN 294A providing uniform DIN ring setting force
Hydraulic power units TN 285A with tooling inserts for thirty-seven degree flaring
Pipe bending machines TN 362 producing smooth tube curves without wall wrinkles

RASTELLI Hydraulic Valves and Pipe Blocking Brackets

The component catalog from RASTELLI / Rastelli Raccordi features in-line check valves, high-pressure ball valves, and tube support clamps. Molded vibration-absorbing polymer and aluminum pipe brackets minimize acoustic noise and prevent movement along piping lines.

Poppet check valves with calibrated return springs and low cracking pressures
High pressure ball valves with robust polyacetal seats for isolation tasks
Dampening clamps manufactured in polypropylene, polyamide, and aluminum alloy
Standard, double, and heavy series configurations for orderly pipe arrangement

Pre-assembly protocol and tightening torque control for DIN 2353 fittings

Operational reliability of RASTELLI / Rastelli Raccordi DIN 2353 cutting ring fittings relies on rigorous mechanical pre-assembly into precision steel tubing. Seamless tubes must be cut square and deburred along inner and outer edges without chamfering.

During manual assembly or automated cycle on TN 294A pneumatic units, male fitting threads and ring cones receive light hydraulic lubrication. The union nut tightens until the cutting edge contacts the outer tube surface, followed by exactly one full wrench turn.

Visual inspection confirms a uniform ring collar of displaced metal ahead of the primary cutting edge. This seal prevents fluid leaks during intense hydraulic pressure surges.

Flaring guidelines for seamless hydraulic tubing and SAE J 514 assembly

Leak-tight sealing across RASTELLI / Rastelli Raccordi thirty-seven degree cone flared fittings according to SAE J 514 depends on flaring geometry accuracy. Flaring operations run on TN 285A hydraulic units after sliding the sleeve and nut with UN or UNF threads over the tube.

The flare angle is confirmed using precision angle gauges, ensuring the internal cone surface remains free of scratches, longitudinal marks, or wall thinning. During union alignment, mating cones are centered manually along the pipe axis before applying specified torque with a calibrated wrench.

Pure metal contact eliminates joint degradation caused by mechanical vibration on mobile equipment.

Thread sealing techniques for parallel BSPP and tapered BSPT adaptors

Connecting RASTELLI / Rastelli Raccordi hydraulic adaptors into manifold blocks or pump ports requires matching thread sealing interfaces. Parallel BSPP threads rely on an elastomeric profile seal or bonded washer seated against a machined port spotface.

Tapered thread forms including BSPT and NPT achieve closure through metal deformation across thread flanks during tightening. To eliminate galling on austenitic AISI 316Ti stainless steel components, technicians apply medium-strength anaerobic thread compound.

Over-tightening tapered threads into hydraulic motor bodies is prohibited to prevent internal stress cracking in structural metal.

Crimping procedures for high pressure hose with Standard and Interlock skirts

Service durability of flexible fluid lines equipped with RASTELLI / Rastelli Raccordi couplings depends on precise crimping dimensions on hydraulic swaging equipment.

For lines exceeding four hundred bar pressure experiencing cyclic shock, Interlock fittings require mechanical skiving across external and internal rubber layers. Skive length must match the internal locking ridges of the steel ferrule.

Crimping diameters are checked using micrometers across four diametrical axes. Following swaging, hose conduits are blown clean with dry air and sealed with protective caps, preventing contamination from entering clean machine fluid circuits.

Tooling setup for cold tube collar formation using the RR-FORM machinery

Cold tube forming on automated RASTELLI / Rastelli Raccordi RR-FORM machines produces a solid retention collar containing an elastomeric seal groove. Unlike bite rings, the formed tube end preserves the cross section of thin-walled piping without sharp notch incisions.

Technicians install expanding tooling dies and forming pins matching the specific pipe outer diameter and wall thickness. The hydraulic drive deforms the metal cold while monitoring axial compression force.

The resulting collar profile is checked with limit gauges, providing vibration resistance on high-pressure circuits that endure repeated field disassembly.

Installation of dampening pipe brackets and check valve inspection intervals

Protecting distributed hydraulic piping against structural fatigue requires proper layout of RASTELLI / Rastelli Raccordi modular clamp assemblies. Vibration-damping polypropylene and polyamide clamp halves grip rigid tubing, reducing acoustic resonance generated by piston pumps.

Supports mount onto welded plates or channel rails spaced one to three meters apart according to tube diameter.

Inline poppet check valves and high-pressure ball valves undergo routine inspection for smooth spool travel and zero reverse leakage through polyacetal seats under full working pressure differential.

RASTELLI / Rastelli Raccordi and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of RASTELLI / Rastelli Raccordi and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.