Laminar Fittings
US B2B Distributor · Est. 2016
Rotolock service valve connections — sometimes called swivel-flare or seal-cap connections — provide a high-pressure refrigerant interface between compressor/condenser equipment and field-installed refrigerant piping in commercial and industrial HVACR systems. The female threaded body brazes or bolts onto the equipment refrigerant port, while the male swivel nut accepts a copper tube stub that has been flared to the matching geometry. The swivel design allows the tube to be rotated during installation without unscrewing the seal, simplifying installation in tight equipment compartments.
Our rotolock connections are forged from C37700 brass for the body and CNC-machined from C36000 brass for the swivel nut, providing the work-hardening behavior needed for repeated service cycles. Sizes are 1-1/4", 1-3/8", 1-5/8", and 2-1/8" OD — covering the standard refrigerant line sizes for commercial split systems, packaged rooftop units, and industrial refrigeration racks. Working pressure ratings are 450 PSI for suction-side service and 650 PSI for discharge-side service, conforming to ARI Standard 495 requirements.
The thread form is SAE J513-compatible for cross-compatibility with major OEM equipment from Copeland, Bitzer, Bristol, Tecumseh, Carrier, Trane, and York. Each connection ships with a matching brass cap, a copper-clad steel washer (or PTFE depending on application), and the matching swivel nut. Production traceability documentation is provided per lot, with material test reports available on request for projects requiring full QA documentation. Refrigerants compatible across the range include R-410A, R-22 (legacy), R-32, R-454B, R-134a, R-404A, and R-407C.
This product is offered in the size, thread, and configuration variants listed below. Specify the variant(s) you need in your RFQ. Custom sizes available on request.
Manufactured at our partner facility, Meridian Corporation (Jamnagar, India), which holds:
Brass 45° flare fittings per SAE J512 for refrigerant applications. Compatible with R410A, R32, R454B, R134a. 3/16" to…
View product detailsForged brass quarter-turn ball-type service valve bodies for split systems. ODS connections. Integral 1/4" SAE access port. Designed…
View product detailsBrass refrigerant access fittings with replaceable Schraeder cores. 1/4" SAE, M8x1, M12x1.5 sizes. For service ports and pressure…
View product detailsLearn about the design, applications, and typical materials of the fitting types in this category.
HVACR refrigerant fitting with a sweat (solder) connection — the tube slides into the fitting and is brazed in place.
Learn more →Threaded caps that seal refrigerant access ports between service intervals — secondary seal for safety and refrigerant retention.
Learn more →HVACR fitting type using a flange-and-bolt connection between compressor valve bodies and refrigerant piping.
Learn more →Flare-style fitting for HVACR and gas service — the pipe end is mechanically flared to a 45° cone that seals against the…
Learn more →Refrigerant access port with a depressible core valve — same mechanism as a tire valve, used for gauge connection and charging.
Learn more →Refrigerant-rated ball valve installed in HVACR service ports — provides isolation, charging access, and pressure measurement capability.
Learn more →Submit your RFQ and our US-based B2B sales team will respond with EXW pricing and quality documentation within 1–2 business days.
B2B wholesale only · Standard pricing EXW Jamnagar, India or EXW Anderson, IN, USA
