U.S. Patent No. 4,315,520
Airtrol 4104 series pressure and vacuum regulators are designed for applications requiring very low output settings and low flow. Full scale ranges as low as 1.5 psi pressure and 3″ Hg vacuum are available. Settings as low as 1″ WC are easily maintained with both. Both units will also accept a pilot input, allowing pneumatic control of the output setting (see schematics). Hysteresis free adjustments are made through a non-rising stem, available with an attractive knob, plain (to allow the installation of OEM knobs) or flush for “back panel” applications.
4104 Series Pressure & Vacuum Regulators
Specifications
| R-4104 SERIES (PRESSURE) | |
|---|---|
| REGULATOR TYPE | Constant Bleed, Relieving |
| WETTED MATERIALS | Polysulfone, Silicone, Stainless steel |
| SUPPLY CONSUMPTION | See Graph |
| MAX SUPPLY | 35 PSI (242) kPa) |
| TEMPERATURE RANGE | 40° – 150° F (4° – 66° C) |
| EFFECT OF SUPPLY VARIATION | < 0.02 PSI (0.14 kPa) per 1 PSI (6.89 kPa) supply change when dead-ended |
| REPEATABILITY | < +/- 0.05 PSI (.35 kPa) |
| DRIFT | < .03 PSI (.21 kPa) after 24 hours |
| RECOMMENDED FILTRATION | 5 micron |
| V-4104 SERIES (VACUUM) | |
| MAX SUPPLY | 30″ (760 mm) Hg |
| EFFECT OF SUPPLY VARIATION | < 0.01" (0.254 mm) Hg per 5" (127 mm) supply change when dead-ended |
| REPEATABILITY | < +/- 0.03" (0.76 mm) Hg |
| DRIFT | < .05" (1.27 mm) Hg after 24 hours |
| ALL OTHER SPECIFICATIONS REMAIN THE SAME AS PRESSURE VERSION |
Ordering Information
Note: These regulators require an orifice restrictor in the supply line to perform as specified.
The “P80” and “P85″ barbed fittings are optional. Standard parts have straight ports and are supplied with 1/16″ ID tubing and a 0.007” plain orifice. If ordered with the “P80” or “P85” fittings then those can be made four different ways. Contact eng1@airtrolinc.com to request drawings of the four different options.
See the following page for schematics and drawings of the parts without the barbed fittings: 4103 & 4104-Schematics
