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California is home to some of the toughest conditions for hydraulic systems, high pressures, demanding machinery, extreme temperatures, and the need for constant reliability. Whether you’re in agriculture in the Central Valley, heavy construction along the coast, or tech-industry manufacturing in Silicon Valley, good hydraulic fittings can make or break your operation. In 2025, a select group of manufactures across CA are earning praise just for durability, but for innovation, leak-tight designs, better materials, fast delivery, and greener practices.
These companies don’t just build fittings, they build trust, safety, and efficiency into every connection. Choosing the right manufacturer means fewer breakdowns, safer work, and peace of mind you can count on.
So, I’m listing here the Top 8 Hydraulic Fittings Manufacturers in California, USA for 2025. Without further ado, let’s get started!
PARKER HANNIFIN (IRVINE, CA)
Parker Hannifin is a global leader in motion and fluid-control technologies with major Fluid Systems and aerospace operations in Irvine, California. The company supplies hydraulic fittings, tube fittings, quick-connects and engineered fluid-conveyance solutions to industrial and aerospace customers. Parker’s California facilitates support engineering manufacturing and aftermarket services that emphasize traceability, strict process control and long product life.
SWAGELOK (NORTHERN CALIFORNIA / FREMONT)
Swagelok is a long-established manufacturer of two-ferrule tube fittings, adapters, and fluid system components with a large Northern California sales and service center in Fremont that offers local inventory, custom assemblies, and on-site technical support. The company is known for repeatable, vibration-resistant connections and robust training and inspection programs that reduce filed leaks and downtime.
EATON (AEROQUIP / IRVINE, CA)
Eaton supplies hydraulic fittings, hose assemblies and fluid-conveyance products through its aerospace and industrial operations in California, combining broad product lines with regional engineering and repair capability. Eaton’s California sites focus on quality control and aerospace/industrial specification compliance for high-integrity fluid systems.
B&E MANUFACTURING (A LISI AEROSPACE COMPANY – GARDEN GROVE, CA)
B&E Manufacturing is a California contract manufacturer that specializes in precision AN/AS/MS/NAS hydraulic tube fittings and aerospace-grade components; the firm is AS9100/ISO-certified and serves aerospace and defense supply chains. Their California production emphasizes tight tolerances, NADCAP-level controls and documented inspection to meet high reliability requirements.
DIXON VALVE & COUPLING (ONTARIO / SOUTHERN CALIFORNIA)
Dixon Valve & Coupling is a century-old manufacturer and a global supplier of house couplings hydraulic hose fittings and quick-disconnects with distribution and service facilities in Sothern California that support local inventory and technical assistance. The company combines board product availability with manufacturing know-how for industrial and specialty fittings.
HYDRAULIC CONTROLS, INC. (CONCORD, CA)
Hydraulic Controls, Inc. is a large Pacific-Southwest fluid-power distributor and systems integrator headquartered in Concord, California, offering fittings, hoses, custom assemblies and engineered power units with local fabrication and repair services. The company is employee-owned and maintains multiple California branches to supply fast local response and project support.
MORSE HYDRAULICS (FREMONT/HAYWARD AREA, CA)
Morse Hydraulics is a west-coast supplier and service provider that stocks high-pressure hydraulic fittings and builds assemblies at its California locations, focusing on fast turnaround for maintenance and field work. The company emphasizes hard-to-find connectors, certified crimping and mobile service vans to minimize equipment downtime.
ROYAL BRASS & HOSE/ROYAL BRASS INCORPORATED (SAN JOSE, CA)
Royal Brass & Hose is a third generation, family-owned California hose and fittings supplier with a long local track record providing hose assemblies, brass and steel fittings and light fabrication in the San Jose area. The company combines deep inventory with experienced on-sire service to support rapid repairs and custom hose fabrication.
Table of Contents
- PARKER HANNIFIN (IRVINE, CA)
- SWAGELOK (NORTHERN CALIFORNIA / FREMONT)
- EATON (AEROQUIP / IRVINE, CA)
- B&E MANUFACTURING (A LISI AEROSPACE COMPANY – GARDEN GROVE, CA)
- DIXON VALVE & COUPLING (ONTARIO / SOUTHERN CALIFORNIA)
- HYDRAULIC CONTROLS, INC. (CONCORD, CA)
- MORSE HYDRAULICS (FREMONT/HAYWARD AREA, CA)
- ROYAL BRASS & HOSE/ROYAL BRASS INCORPORATED (SAN JOSE, CA)
Founded in 2004, NingBo NJ Hydraulic Adapter Co., Ltd specializes in manufacturing hydraulic fittings, hydraulic adapters, hose fittings, split flange kits, flange adapters, flanges, reusable hose fittings, ferrules, caps and plugs and so on, then sell to worldwide, especially North America, South America, Australia, Germany, UK. Our history of collaboration with our customers for specially designed hydraulic applications, has established NJ as an industry-preferred source for customer-specific manufactured adapters. We are proud to serve major markets including: construction, agriculture, mining, industrial equipment and more. All NJ fittings are manufactured to the highest standards, meeting S.A.E./BRITISH/EATON/DIN and INTERNATIONAL specifications. We control our own manufacturing both domestically and overseas. NJ has a strong inventory reserve, more than 20,000 warehouse has more than 25,000 series and sizes of fittings, far more than the competitors twice as much. From the time we receive your order until it arrives at your facility, we're committed to meeting your deadlines and delivery requirements. Our goal is to provide your fittings as fast as possible — when and where you need them — which also helps you keep your inventories and freight costs low. Whether you have an emergency or an ongoing need, send us an email. We deliver the fittings you want, along with the high quality, best after-sales service and competitive price you deserve.