Stucchi Quick Couplers & Fluid Control Parts

Stucchi Inc, founded in 1960 in Pagazzano (Bergamo), Italy, with US operations in Romeoville, Illinois, manufactures hydraulic quick couplers, multi-coupling plates, and fluid control products. The company is active and builds flat-face, poppet, and screw-thread couplings from 1/8″ to 2.5″ bore, rated up to 10,000 PSI, for mobile equipment, agricultural, industrial, and aerospace use. Northern Hydraulics supplies Stucchi couplers and fluid control products and cross-references replacement and equivalent parts for discontinued Stucchi lines.

Stucchi Inc Product Lines & Series

Stucchi organizes its hydraulic quick coupler catalog into engineered families, each built to a recognized interchange standard:

• Flat-Face Couplers – FIRG (original ISO 16028 flat-face, 1/4″ to 2″), A-Premier (ISO 16028, 1/8″ to 1.5″, rated 3915 to 6090 PSI), A-HD (hand-connect under residual pressure), and VEP / VEP-HD (threaded flat-face for high residual pressure, up to 7975 PSI).
• Poppet Interchange Couplers – IR, IRV, and IRS series built to ISO 5675 for agricultural and mobile equipment.
• Threaded Couplers – VR series (3/8″ to 1.25″) for German DIN screw-thread interchange.
• Casting Multi-Coupling Systems – Saturn 3 (ISO 16028, 350 bar, A13 / A15 / A17), Saturn 5, and Saturn HF for five-line hydraulic blocks at 350 bar.
• Multi-Coupling Plates – DP, GR, BM3, SV2, and One-Position families.
• Check Valves and Hydraulic Adapters – flow-control bodies and hydraulic fittings for line conditioning.

Cross-Referencing Stucchi Inc Parts

Stucchi couplers are built to common interchange standards, which makes equivalent-part sourcing straightforward when a line is discontinued or you need to match an existing fitting. The FIRG and A-Premier flat-face series follow ISO 16028, so they interchange with industry-standard flat-face couplers. The VR series provides German DIN 2353 / ISO 8434-1 screw-thread compatibility, and the IRV series follows ISO 5675 for agricultural poppet interchange. The VEP series connects and disconnects under high residual pressure (up to 3625 PSI), and Stucchi supplies FAP and FAPZ replacement parts for discontinued lines along with conversion kits for equipment originally fitted with other brands’ couplers. If you have an obsolete Stucchi part number, or you are trying to match a coupler half from another manufacturer, send us the markings and we will cross-reference a current equivalent. Request a Stucchi cross-reference quote.