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Series-P8
Brass High Pressure Flow Switches, 0.25-2.0 GPM, Industrial Use
- Integrates a one-piece magnetic PPS composite piston to handle pressure up to 1500 psi
- Less susceptible to clogging than other high in-line pressure switches with 100 micron filtration
Product Overview
- Accuracy ± 20 %
- Accuracy Detail ± 20% of set point
- Electrical Connection Pigtail Leads
- Filter 100 μ or better
- Mounting Orientation Vertical Lead wires Down
- Operating Temperature, Max 275 °F
- Operating Temperature, Min -20 °F
- Port 1 Size 3/8 in
- Port 1 Type NPT Male
- Port 2 Size 3/8 in
- Port 2 Type NPT Male
- Measurement Pressure Type Gauge
- Sensor Material Brass; PPS composite, Stainless Steel, Fluorocarbon
- Series ID Series-P8
- Switch Rating 0.17A@120Vac,0.08A@240Vac,0.13A@120Vdc,0.06A@240Vdc
- Switch Type SPST NO
- Weight 0.17 kg
- Wire Gauge 22 AWG
Supported Applications
The Dwyer Series P8 High Pressure Brass Flow Switches are designed for flow detection in liquid systems. The series is documented for use in industrial cleaning equipment and high pressure lubrication systems.
Operating Conditions & Performance
These switches operate within a process temperature range of -20 to 275°F (-28 to 135°C) with a maximum operating pressure rating of 1500 psi (103.4 bar). The measurement range spans from 0.25 to 2.0 GPM (0.95 to 7.57 LPM), depending on the specific model selected.
Performance specifications include a set point accuracy of ±20% and require filtration of 100 microns or better for liquid media containing particulate or debris. The switches feature an SPST, NO electrical output with ratings up to .4 A AC at 30 VAC and .3 A DC.
Configuration Options
The Series P8 is available in five distinct models (P8-11 through P8-15), each configured for a specific actuation set point:
- P8-11: 0.25 GPM (.95 LPM)
- P8-12: 0.50 GPM (1.89 LPM)
- P8-13: 1.0 GPM (3.79 LPM)
- P8-14: 1.5 GPM (5.68 LPM)
- P8-15: 2.0 GPM (7.57 LPM)
Wetted materials consist of a brass housing, PPS composite piston with epoxy, 316 SS spring, and Fluorocarbon O-ring. Electrical termination is provided via No. 22 AWG, 24" (61 cm) polymeric leads.
Key Product Differences
The primary variation across the series is the actuation set point flow rate defined by the model number suffix. The data sheet specifies a brass housing for this high-pressure configuration; however, related documentation notes that Dwyer In-Line Flow Switches P8 Models are available with stainless steel housings in other configurations.
Set points shown on specification charts are based on a vertical mounting position (inlet port down) using water at +70°F. Some variation in set point actuation will occur if the switch is installed in other orientations or used with liquids of different specific gravities due to ambient temperature changes.
PDFs & Manuals
