U.S. PATENT NO. 4,315,520
4104 Series
Low Flow Pressure & Vacuum Regulators
The 4104 Series is engineered for applications requiring ultra-low output settings and precision low flow. With full-scale ranges as low as 1.5 PSI or 3" Hg, these regulators can maintain settings as low as 1" WC. They also feature pilot input capability, allowing for remote pneumatic control of the output setting.
Technical Highlights
- Constant Bleed, Relieving type
- Hysteresis-free adjustments
- Non-rising stem design
- Accepts pneumatic pilot control
Precision Metrics
- Repeatability: < ± 0.05 PSI
- Low Drift: < 0.03 PSI after 24 hrs
- Wetted: Polysulfone, Silicone, SST
- Rec. Filtration: 5 Micron
Technical Specifications
| Feature | R-4104 (Pressure) | V-4104 (Vacuum) |
|---|---|---|
| Max Supply | 35 PSI (242 kPa) | 30" (760 mm) Hg |
| Supply Variation | < 0.02 PSI per 1 PSI change | < 0.01" Hg per 5" change |
| Repeatability | < ± 0.05 PSI | < ± 0.03" Hg |
| Drift (24 hr) | < 0.03 PSI | < 0.05" Hg |
Ordering Information
[Base Model]
R-4104 (Pres)
V-4104 (Vac)
V-4104 (Vac)
[Range]
PSI: 1.5, 3.5, 10, 20, 30
Hg: 3, 10, 25
Hg: 3, 10, 25
[Adjustment]
W/K (Knob)
W/S (Shaft)
W/OS (Flush)
W/S (Shaft)
W/OS (Flush)
[Ports]
P80 (1/16")
P85 (1/8")
P85 (1/8")
Example: R-4104-10-W/K-P85
(0-10 PSI pressure regulator, with knob and 1/8" barbs)
* Standard units include straight connections for 1/16" ID tubing.