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 INFO369.38295.50
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

No accessories found
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

Supply Voltage Not required:

Contact Type (SPST/SPDT) :

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

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

Contact Rating (volts/current):

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

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

P74JA Floating copper contacts, 1A @24 VAC:

5A resistive, 3A inductive @30VDC:

Setpoint (SP) Adjustments (Range-screw/knob) External Adjustment Wheel:

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

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

Differential (Adjustable or not, Range) :

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 (auto or manual) Automatic reset by differential:

Visual Indication Internal SP 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 lbs (1.1 kg):

Approvals UL Listed, CSA:

Warranty 1 year:

Download Additional Data

document   Catalog Page
document   Installation Guide
document   P74 Series Datasheet