Advanced Specialty Gas Equipment

AG3570 Series
Stainless Steel, High Purity, Lecture Bottle Regulators

These single-stage regulators are intended for high and ultra high purity corrosive gas lecture bottle applications. They are available in two delivery pressure ranges (2–30 psig and 4–75 psig) and with either CGA 110 or CGA 180 connections.


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.
  • 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" NPT vent port and stem packing allowing for complete capturing of bonnet when connected to a vent line or disposal system.
Maximum Inlet Pressure: 3000 psig

Inlet Pressure Gauge: (dual scale):
  0–4000 psig / 0–275 bar

Delivery Pressure Range

Delivery Pressure Gauge

Filter: 40 micron

Gauge Size: 2" Dial

Operating Temperature Range: -40°F to 140°F

Flow Coefficient: Cv = 0.6

Internal Volume:
  Regulator (body only): 6.0 cc 

Inlet Connection: CGA 110 or 180 as ordered

Outlet Connection:   1⁄4" NPT female

Approximate Weight: 2 lbs

Materials of Construction
Body: 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
Friction Sleeve: PTFE
Diaphragm: Type 316 Stainless Steel

Optional Equipment

Equipment Part No.
Regulator Mounting Plate* RP1
PTFE washers (package of 25)  
  for CGA 110 SG3540
  for CGA 180 SG3541
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
Captured Venting ConfigurationSG5650
* If selected, these items are not installed on the regulator. They are shipped as separate items.

Table I

Part No. Delivery Pressure
Range Gauge (dual scale)
(psig) (psig) (bar)
AG3570-(CGA) 2–30 -30" Hg–0–60 -1–0–4
AG3571-(CGA) 4–75 -30" Hg–0–100 -1–0–7
Where "(CGA)" is indicated above, insert Compressed Gas Association connection number 110 or
180 to complete the part number. Example: AG3570–180. Order by complete part number.