Dwyer Instruments SERIES P2 Catalog Page

®

SERIES P2

FLOW SWITCH

Ideal for Air and Post-Filtered Water Applications, Fixed Set Point, FDA Compliant

1

[25.40]

25/32

[19.84]

FLOW

4-5/16 [109.54]

The Series P2 Flow Switch utilizes a piston-type design for both air and pure water
applications. The switches have preset actuation points from 0.05 to 1.0 GPM for
water and 25 CFH to 5 CFM for air. The P2 is comprised of PPE & PS (polyphenylene
ether and polystyrene) housing and piston and 316 SS spring and stop pin.

FEATURES/BENEFITS

• Piston design incorporates a hermetically sealed SPST magnetic reed switch

• All wetted parts are FDA compliant

• Economical design

APPLICATIONS

• Pure water equipment

• Filter life monitoring

• Heat exchangers

• Cooling applications

SPECIFICATIONS
Service: Compatible liquids or gases.
Wetted Materials: Housing: PPE & PS

(polyphenylene ether and polystyrene);
Piston: PPE & PS and epoxy; Spring and
stop pin: 316 SS.
Temperature Limits: 0 to 212°F (-18 to
100°C).
Pressure Limits: 150 psig (10.3 bar) @
70°F (21°C); 50 psig (3.4 bar) @ 212°F
(100°C).

Switch Type: SPST, N.O.

MODEL CHART
Model Media Actuation Set Point Model Media Actuation Set Point
P2-11

Liquids

P2-12
P2-13
P2-14

.05 GPM (.19 LPM)

Liquids

.25 GPM (.95 LPM)

Liquids

.50 GPM (1.89 LPM)

Liquids

1.0 GPM (3.79 LPM)

Electrical Rating: .17 A @ 120 VAC,
.08 A @ 240 VAC, .13 A @ 120 VDC,
.06 A @ 240 VDC.

Electrical Connection: 22 AWG, 18˝

(45.7 cm), PVC lead wires.

Process Connection: 1/4˝ male NPT.
Mounting Orientation: Any position. Set

points shown are based on vertical, inlet
down position.
Required Filtration: 50 microns or
better.

Weight: 2 oz (.06 kg).

P2-15
P2-16
P2-17
P2-18

Gases @ 5 psi
Gases @ 5 psi
Gases @ 5 psi
Gases @ 5 psi

.42 CFM (11.9 LPM)

1.0 CFM (28.3 LPM)

2.5 CFM (70.8 LPM)

5.0 CFM (141.6 LPM)