Pressure

P74 Series



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P74 Series

Differential Pressure Switch P74 Series

Differential Pressure Switch

 

The Model P74 Differential Pressure Switch measures the difference in pressure exerted upon its two sensing elements in the building automation application. It operates an SPDT switch at the differential pressure set point. With these differential pressure switches, the set point may be adjusted without removing the cover and it is visible on a calibrated scale.


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QtyModelDescriptionIn StockList PriceInternet Price
P47AA-13C STEAM PRESSURE LIMIT CONTROL INFO529.02423.22
P47AA-1C STEAM PRESSURE LIMIT CONTROL INFO460.49368.39
P47BA-1C STEAM PRESSURE LIMIT CONTROL INFO456.81365.45
P70NA-1C LOW PRESSURE CONTROL INFO380.46304.37
P74BA-1 8-70# SPST OPEN ON DECREASE In Stock382.75306.20
P74EA-8C SPDT LOW PRESS. DIFF. CONTROL In Stock357.00285.60
P74FA-1C DIFF PRESSURE SW 1/4INM FLARE In Stock335.97268.78
P74FA-10C PRESSURE CTRL; RANGE 2-26 PSI; DIFF 1.5+/-1.2 PSI In Stock369.38295.50
P74FA-5 PENN DIFF PRESS SW W/1/4INFNPT In Stock330.62264.50
P74JA-2 DIFF PRESS CONTROLLER 1/4M FTG In Stock634.23507.38

Accessories

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Features
  • Brass bellows
  • Completely enclosed contact mechanism
  • Externally adjustable with visual setpoint scale
  • Universal mounting bracket supplied
  • Heavy-duty elements withstand high overrun pressure
  • For air, oil, or other liquids
  • One-year warranty
Specifications

Relay Type :

P74(EA,FA) : SPDT, Red-C-->Yel-N.O. @SP Pressure rise

P74JA : SPDT, Floating, C (red)-->NO (Yellow) on Prsr increase

Relay Rating :

P74EA : Copper snap acting contacts, 16 A @ 120 VAC

P74FA : Copper snap acting contacts, 6 A @ 120 VAC

P74JA : Floating copper contacts, 1A @ 24 VAC

Setpoint: External Adjustment Wheel

P74(FA,JA): 8 to 60 psid (50 to 400 kPa)

P74EA 2: to 30 psid (14 to 207 kPa)

Differential :

P74FA : Fixed 1.5 psid (10 kPa)

P74EA : Fixed 3.5 psid (24 kPa)

P74JA : Fixed 2.5 psid (17 kPa)

Repeatability : ±1% over full range

Reset : Automatic reset by differential

Visual Indication :Internal setpoint plate

Sensor Type : Brass bellows diaphragm

Operating Pressure Range :

P74(FA, A) : 8 to 60 psid (50 to 400 kPa)

P74EA : 2 to 30 psid (14 to 207 kPa)

Overpressure : (Burst) 180 psid (1241 kPa)

Max Operating Pressure : (Proof) 120 psid (830 kPa)

Operating Temperature : 32° to 104℉ (0° to 40℃)

Operating Humidity : 10 to 90% Non-condensing

Wetted Parts: Brass

Media Compatibility :Water, Glycol, Oil and Inert dry air

Process Connection: 1/4″ FNPT or 1/4″ flare fitting (See ordering)

Wiring Terminations : 3 Screw terminals, 16 AWG max (Red=Com-1, Yel=NO-2, Blu=NC-3)

Mounting : 2 holes 0.20″ dia, and supplied bracket

Enclosure Rating :NEMA 1, Steel and baked enamel

Dimensions : 3.98″W x 6.5″H x 2.1″D, (10.1 x 16.5 x 5.3 cm)

Weight: 2.4 lb (1.1 Kg)

Warranty : 1 year

Download Additional Data

document   Catalog Page
document   Installation Guide
document   P74 Series Datasheet