Dwyer Instruments SERIES P3 Catalog Page

[19.05]

3/4

SERIES P3

POLYPROPYLENE FLOW SWITCHES

Fixed Set Points from 0.25 to 2.0 GPM, 3/8” NPT or “Quick Disconnect” Adapters

1 [25.4]

ACROSS FLATS

[19.05]

3/4 ACROSS FLATS

1 [25.4]

Ø7/16

[Ø11.11]

4-15/64 [107.55]

4 [101.6]

11/16 HEX [17.46]

3/8 NPT TYP

Flow Switches,

Shuttle/Piston

The Series P3 Polypropylene Flow Switches t almost any piping requirements with

compatible liquids. Choose the inlet and outlet port to be 3/8˝ male NPT or 1/4˝ male

“Quick Disconnect” then select a quick disconnect acetal adapter for straight through

ow or with a shut off valve.

FEATURES/BENEFITS

• Piston design incorporates a hermetically sealed SPST magnetic reed switch

• Easy integration to existing piping with a

variety of tting options

• Selectable shut off valve will stop line ow

when the adapter is removed from the switch

• Economical design

MODEL CHART Model Connection Actuation Set Point P3-31 P3-32 P3-33 P3-34 P3-35 P3-41 P3-42 P3-43 P3-44 P3-45

3/8˝ NPT 3/8˝ NPT 3/8˝ NPT 3/8˝ NPT 3/8˝ NPT

Quick disconnect Quick disconnect Quick disconnect Quick disconnect Quick disconnect

0.25 GPM (.95 LPM)

0.50 GPM (1.89 LPM)

1.0 GPM (3.79 LPM)

1.5 GPM (5.68 LPM)

2.0 GPM (7.57 LPM)

0.25 GPM (.95 LPM)

0.50 GPM (1.89 LPM)

1.0 GPM (3.79 LPM)

1.5 GPM (5.68 LPM)

2.0 GPM (7.57 LPM)

APPLICATIONS

• Pure water equipment

• Filter life monitoring

• Heat exchangers

• Cooling applications

SPECIFICATIONS Service: Compatible liquids. Wetted Materials: Housing:

Polypropylene; Piston: PPS composite; Spring: 316 SS; O-ring: Fluorocarbon. Temperature Limits: 0 to 212°F (-18 to 100°C). Pressure Limits: 125 psig (8.6 bar) @ 70°F (21°C), 50 psig (3.4 bar) @ 212°F (100°C).

Accuracy: 20% of set point. Repeatability: ±1%. Switch Type: SPST, NO.

ADAPTERS Model Connection P3-801

Quick disconnect straight through 1/4˝ NPT

P3-802

Quick disconnect straight through 1/4˝ BSPT

P3-804

Quick disconnect straight through 3/8˝ BSPT

P3-807

Quick disconnect straight through 1/4˝ ID tubing

P3-901

Quick disconnect straight through 1/4˝ NPT w/shut-off valve

P3-902

Quick disconnect straight through 1/4˝ BSPT w/shut-off valve

P3-907

Quick disconnect straight through 1/4˝ ID tubing w/shut-off valve

Electrical Rating: .08 A @ 120 VAC. Electrical Connection: 24˝ (60.96 cm),

polymeric wire leads, 22 AWG.

Process Connection: 3/8˝ male NPT or 1/4˝ quick disconnect.

Mounting Orientation: Any position. Set points shown are based on vertical, inlet down position. Required Filtration: 100 microns or better. Weight: 5 oz (0.14 kg).

DWYER INSTRUMENTS, INC. |

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