The technical breakdown of each segment in the markings includes:
Regulations & Pressure Ratings
- DOT-3E 1800: The United States Department of Transportation (DOT) specification classification. It indicates that this seamless cylinder is rated for a maximum working pressure of 1800 psig (124 bar) at room temperature.
- TC-3EM 124: The Transport Canada (TC) equivalent certification, verifying compliance with Canadian dangerous goods transit standards for a working pressure of 124 bar.
- PL3: Production lot identifier or regulatory marker used for manufacturing tracking.
Manufacturing & Registration
- M5365: The unique DOT/TC manufacturer registration number assigned to the factory site that fabricated the cylinder.
Product Specifications & Part Number
- 304L-HDF4-500: The official Swagelok Part Number. Breakdown of the part number includes:
- 304L: Manufactured from low-carbon 304L stainless steel, which resists intergranular corrosion during welding or exposure.
- HDF4: Indicates a heavy-wall design with 1/4-inch female NPT (National Pipe Thread) connection ports on both ends.
- 500: Specifies an internal volume capacity of 500 cm³ (approx. 0.5 Liters).
Included Components & Technical Specifications:
- Cylinder: Genuine 500mL double-ended sample cylinder manufactured by Swagelok for Parr Instrument Company (Model 304L-HDF4-500). Heavy-wall 304L stainless steel construction featuring official DOT-3E 1,800 PSI transport safety stamps.
- Safety Relief Valve: Genuine factory Parr 173VB2 High-Pressure Safety Relief Valve, factory-calibrated to vent at 1,800 PSI for maximum upstream system over-pressure protection.
- Regulation: Inline Smith Gas Regulator mounted at the manifold base for fine single-stage delivery pressure control out to the reactor line.
- Three-Point Pressure Monitoring & Instrumentation:
- Duro 2,000 PSI analog gauge for visual high-pressure inlet/bottle monitoring.
- Ashcroft 600 PSI Duralife Plus pressure gauge integrated directly onto the Smith regulator for final feed delivery.
- Ashcroft Type G2 electronic pressure transducer mounted to the top manifold for digital computer data logging and live tracking.
- Isolation Valve: Equipped with a premium Swagelok SS-44F4 Stainless Steel 2-Way Ball Valve rated for up to 2,500 PSI with 1/4" Female NPT ports for high-flow system refill.
- Integrated Nitrogen Purge/Vent System: Outfitted with dedicated auxiliary lines and genuine Swagelok isolation valves specifically designed to safely blanket or flush the hydrogen feed loop with inert nitrogen.
- Top Manifold Block: Built around a factory Parr T316 Stainless Steel Multi-Port Block with material traceability stamps
- Plumbing & Hoses: Fully plumbed with genuine Swagelok stainless steel compression fittings. Includes (1) reinforced rubber utility/vent hose paired directly with the SS-44F4 ball valve setup.
- Mounting: Safely secured on a dedicated vertical support benchtop laboratory stand with a printed label indicating Hydrogen service.
- Shipping Notice: Cylinder is completely depressurized and has "EMPTY" compliance sticker. Ready for cost-effective standard UPS/FedEx Ground shipping.
Condition: Excellent
Pulled from a clean, operational laboratory environment. All mechanical components, valve handles, and regulator adjustment knobs actuate smoothly. Physical and structural condition is excellent. Sold as is as shown in photos. Ready to interface with your gas manifold or reactor setup.
Will be carefully disassembled as needed for ground shipping, If you want it freight shipped contact seller before purchase.