Johnson Controls P-3800 Reset Volume Controller
The P-3800 Reset Volume Controller regulates the flow of air in Variable Air Volume (VAV) boxes. The P-3800 controls the output volume, between adjustable minimum and maximum limits, in response to a reset signal from a thermostat or some other master controller. The P-3800 is available in two models.
• fully adjustable - reset start point - reset range - minimum and maximum flow set points
• provides controllable flow down to 0.01 in. WG velocity pressure
• reset range adjustable 0.15 to 1.6 in. WG
• isolated diaphragm design accepts any sensing line
• fits most competitors’ mounting brackets
• provided with barbed fittings on all ports
• includes a replaceable filter/orifice assembly
• constant reset span
Select a link under the "item" tab below to order.
| Control Pressure | 1 to 20 psig (7 to 138 kPa) | |
| Set Point | Adjustable 3 to 18 psig (21 to 124 kPa) | |
| Accuracy | ±1 PSI (±7 kPa) | |
| Maximum System (In) Pressure | 10 in. WG | |
| Ambient Temperature Limits | -20 to 140°F (-30 to 60°C) | |
| Connections | Barbed Fitting for 1/4 in. O.D. Polyethylene Tubing | |
| Barbed Fitting for 5/32 or 1/4 in. O.D. Polyethylene Tubing | ||
| Mounting | Bracket Supplied | |
