Advanced Specialty Gas Equipment

Stainless Steel Ultra High Purity Regulator Model APC
Model APC

Ultra High Purity, Single-Stage, Bar Stock Regulators

Model APC stainless steel bar stock regulators are designed for use in applications requiring both corrosion and diffusion resistance. These regulators are specially suited for use in gas delivery systems requiring high leak integrity and minimal internal volume for maintaining guaranteed gas purity levels.

These single-stage regulators are recommended for use with gases where inlet pressure does not vary greatly (such as liquefied gases), or where periodic readjustment of delivery pressure setting does not present a problem.

Standard Features
  • Type 316 Stainless Steel Bar Stock Construction provides maximum corrosion resistance.
  • Metal to Metal Diaphragm to Body Seal (without back-up o-ring) assures maximum diffusion resistance.
  • High Purity Regulator Design permits vacuum purging of regulator.
  • Low Internal Volume facilitates purging and reduces contamination potential.
  • Diaphragm Seal Outlet Valve maintains gas purity.
  • Filter traps foreign matter, extends regulator life and reduces maintenance.
  • Threaded Holes in Rear of Regulator permit front panel mounting.
  • 1⁄16" NPT Female Bonnet Vent Port allows bonnet to be connected to a vent line or disposal system as a precaution in the unlikely event of a diaphragm failure.
Optional Features
  • Captured Venting Configuration provides 1⁄16" NPTF vent port and stem packing allowing for complete capturing of bonnet when connected to a vent line or disposal system.
  • Mounting Ring permits regulator to be panel mounted.
Maximum Inlet Pressure:
  APC-3: 3000 psig
  APC-2: 800 psig
  APC-1: 300 psig

Inlet Pressure Gauge

Delivery Pressure Range

Delivery Pressure Gauge

Filter: 40 micron

Gauge Size: 2" Dial

Operating Temp. Range: -40°F to 140°F

Flow Coefficient:
  Regulator: Cv = 0.06
  Outlet Valve: Cv = 0.17

Internal Volume: Regulator (body only): 6.0 cc

Bonnet Vent Connection: 1⁄16" NPT female

Inlet Connection: CGA 296, 320, 326,
330, 346, 350, 510, 540, 580, 590, 660 or
705 as ordered

Outlet Connection:   1⁄4" NPT female

Approximate Weight: 3 lbs

Materials of Construction
Body and Outlet Valve: Type 316 Stainless Steel Bar Stock
Gauges: Type 316 Stainless Steel
Bonnet: 300 Series Stainless Steel
Other Metal Parts Exposed to Gas: Type 316 Stainless Steel
Seats: PCTFE
Friction Sleeve: PTFE
Diaphragm: Type 316 Stainless Steel

Optional Equipment

Equipment Part No.
Panel Mounting Ring* PM3803
Regulator Mounting Plate* for Model APC RP1
Inboard Helium Leak Test and Test Report HT1000
Outboard Helium Leak Test and Test Report HT1001
Compression Fittings* (male connectors)  
  1⁄4" NPT male x 1⁄8" compression SG6713
  1⁄4" NPT male x 1⁄4" compression SG6714
  1⁄16" NPT male x 1⁄8" compression SG6715
Safety Mounting Brackets*  
Captured Venting Configuration SG5650
* If selected, these items are not installed on the regulator. They are shipped as separate items.

Table I

Part No. Inlet Pressure   Delivery Pressure
Gauge (dual scale)   Range Gauge (dual scale)
(psig) (bar)   (psig) (psig) (bar)
APC-3-30-(CGA) 0–4000 0–275   2–30 -30" Hg–0–60 -1–0–4
APC-3-75-(CGA) 0–4000 0–275   4–75 -30" Hg–0–100 -1–0–7
APC-3-150-(CGA) 0–4000 0–275   10–150 -30" Hg–0–200 -1–0–14
APC-3-300-(CGA) 0–4000 0–275   20–300 0–400 0–27
APC-3-500-(CGA) 0–4000 0–275   30–500 0–600 0–41
APC-2-30-(CGA) 0–1000 0–69   2–30 -30" Hg–0–60 -1–0–4
APC-2-75-(CGA) 0–1000 0–69   4–75 -30" Hg–0–100 -1–0–7
APC-2-150-(CGA) 0–1000 0–69   10–150 -30" Hg–0–200 -1–0–14
APC-2-300-(CGA) 0–1000 0–69   20–300 0–400 0–27
APC-2-500-(CGA) 0–1000 0–69   30–500 0–600 0–41
APC-1-30-(CGA) 0–400 0–27   2–30 -30" Hg–0–60 -1–0–4
APC-1-75-(CGA) 0–400 0–27   4–75 -30" Hg–0–100 -1–0–7
APC-1-150-(CGA) 0–400 0–27   10–150 -30" Hg–0–200 -1–0–14
Where “(CGA)” is indicated above, insert appropriate Compressed Gas Association connection number to complete the part number. Example: APC-3-30-580. Order by complete part number.