Fisher Scientific Company Gas Regulator Compressed Gas Dual Stage

Fisher Scientific Dual-Stage Compressed Gas Regulator – Heavy-Duty Multistage Delivery, Chrome-Plated Brass Body, Dual-Scale Gauges, Manual Control Needle Valve (MPN: FS-100A)

The Fisher Scientific FS-100A is a heavy-duty, clinical-grade dual-stage (multistage) compressed gas regulator engineered to deliver precise, unwavering pressure regulation for critical analytical instrumentation, laboratory incubators, and pilot process setups. Unlike standard single-stage models that suffer from output drift as the main cylinder empties, this diaphragm-sensed dual-stage configuration utilizes a two-tier drop-down mechanical architecture. The first stage reduces the high source tank pressure down to an intermediate level, allowing the second stage to deliver a perfectly constant, uniform outlet flow regardless of declining cylinder supply volumes. Fabricated with a rugged forged chrome-plated brass body and a Delrin cap bushing for ultra-smooth adjustment response, this high-accuracy instrument is optimized for non-corrosive general-purpose laboratory gases, including compressed air, nitrogen, helium, argon, and diagnostic gas mixtures.

Technical Performance and Design

• Constant Pressure Dual-Stage Mechanics: Built with a dual-chamber mechanical reduction matrix that actively cancels out the "supply pressure effect." This ensures the set outlet pressure remains completely static from a full tank down to the final remnants, preventing sudden process line shifts.

• Forged Chrome-Plated Brass Body: Precision-machined from a heavy brass core matrix coated in industrial chrome. This structural metallurgy provides exceptional internal yield strength, resists workplace wear, and prevents atmospheric gas outgassing into clean sample streams.

• Dual-Scale Analog Precision Gauges: Outfitted with two high-visibility analog mechanical dials showing simultaneous, high-contrast PSI and kPa measurements. One gauge audits total remaining high-pressure cylinder supply while the second tracks final downstream delivery levels.

• Integrated Needle Valve & Safety Relief: Outfitted with a manual control outlet needle valve featuring a standard 1/4 inch NPT male thread connection for granular flow tweaking. The internal assembly includes a self-reseating safety relief valve to automatically vent excessive pressure shocks.

Product Specifications

• Model Number / MPN: FS-100A (Model FS100A)

• Manufacturer / Brand: Fisher Scientific

• Regulator Classification: Dual-Stage / Multistage Cylinder Pressure Regulator

• Maximum Inlet Capacity Ceiling: Up to 3,000 psi maximum rating

• Connection Interface Configuration: Rear or side cylinder connection fitting with a 1/4 inch NPT male thread outlet needle valve

• Material Composition: Chrome-Plated Forged Brass Body / High-Durability Elastomeric Internal Diaphragm

• Suitable Flow Media: Optimized for non-corrosive laboratory gases, carrier air lines, nitrogen, helium, and argon (Not for use with toxic or highly corrosive acid gases)

• Valve Adjusting Handle: Large, impact-resistant manual adjustment knob with Delrin bushings

Key Benefits and Applications

• Incubator and Environment Stabilization: The ideal pressure control companion for supplying CO2 or N2 lines to cell culture incubators, ensuring a steady gas flow to maintain cell environment baselines without constant manual tuning.

• Gas Chromatography Carrier Feeds: Provides the steady, pulse-free pressure envelope required to route inert carrier gases into GC detection blocks, minimizing baseline detector noise and retention time drift.

• Sintered Metal Inlet Protection: Outfitted with an internal sintered metal filtration element inside the inlet stem to trap tank scale, dust, and micro-particulates before they can scar internal valve seats.

• Industrial and Calibration Sampling: Perfectly suited for filling sample bags, feeding process analyzers, or running standard benchtop pilot chemical reactions requiring static flow limits over multi-hour runs.

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