• Adjustable Set Point Range
    • Increasing: 20 to 5000 psig, 137.9 to 34473.7 kPa, 1.4 to 344.7 bar
    • Decreasing: 10 to 4520 psig, 69.0 to 31164.3 kPa, 0.68 to 311.6 bar 
  • Deadband: Approximately 10 to 480 psi, 69.0 to 3309.4 kPa, 0.68 to 33.1 bar
  • System Pressure (Maximum): 2000 to 7500 psig, 13789.51 to 51710.6 kPa, 138 to 517 bar
  • Proof Pressure: 3000 to 10000 psig, 20684.27 to 68947.5 kPa, 207 to 690 bar
  • Wetted Materials:
    • Pressure Port: 1/4" FNPT Aluminum
    • Piston: 400 Stainless Steel
    • O-Ring: Buna N, Teflon
  • Relay: SPDT or DPDT 
  • UL, CSA
    • Explosion Proof - Class 1, Div/Zone 1, Groups A, B, C and D
  • CRN, CE Mark, Dual Seal
The above description encapsulates the entire product series. Specifications for individual configurations may vary depending on the selection chosen.
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646PE15
646PE15
$388.50 $311.00 19% off While Supplies Last
  • Base Model
  • psig
    • Increasing 170 to 1400
    • Decreasing 90 to 1230
  • kPa
    • Increasing 1172.2 to 9652.6
    • Decreasing 620.6 to 8480.5
  • bar
    • Increasing 11.7 to 96.5
    • Decreasing 6.2 to 84.8
  • Base Model

    646PE15
  • Process Connection

    1/4"-18 Female NPT Aluminum
  • O-Ring

    Buna-N
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    UL, CSA, CE, CRN, Dual Seal
646PEY12
646PEY12
$528.36 $351.00 33% off While Supplies Last
  • ATEX (Y)
  • psig
    • Increasing 20 to 200
    • Decreasing 10 to 188
  • kPa
    • Increasing 137.9 to 1378.9
    • Decreasing 69 to 1296.2
  • bar
    • Increasing 1.4 to 13.8
    • Decreasing 0.68 to 12.9
  • Base Model

    646PE12
  • Process Connection

    1/4"-18 Female NPT Aluminum
  • O-Ring

    Buna-N
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    ATEX

Selected Configuration

Model #:

646PE21

Price:
$319.00 USD
Availability:
In Stock (4 left)
Min. Qty:
5 Items

Configuration

reset configuration

Agency Approvals

Available agency approvals listed below, ATEX/GOST is a non-standard option.
Dual Seal is not included with models 646PE21 and 646PE31.
  • ATEX
  • CE
  • CRN - Alberta
  • CRN - British Columbia
  • CRN - Manitoba
  • CRN - N.W. Territories
  • CRN - Saskatchewan
  • CSA
  • cUL
  • Dual Seal
  • EMC Directive
  • LVD
  • PED
  • RoHS
  • RTN
  • UL

NACE & NIST

  • NACE

Set Point - Increasing

Set Point Ranges below describe the adjustable increasing range of the entire series, for specific ranges by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psig
Proof
(Test)
Pressure

psig
Adjustable Set Point Range Deadband
Approximate
psi
Model Number & Wetted Parts
Increasing
Pressure

psig
Decreasing
Pressure

psig
Model
646PE*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
3000 5000 170 - 1400 90 - 1230 80 - 170 PE15
5000 7500 300 - 3000 180 - 2780 120 - 220 PE21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure 
kPa
Proof
(Test)
Pressure 
kPa
Adjustable Set Point Range Deadband
Approximate
kPa
Model Number & Wetted Parts
Increasing
Pressure 
kPa
Decreasing
Pressure 
kPa
Model
646PE*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
20700 34500 1170 - 9650 620 - 8480 550-1170 PE15
34500 51700 2070 - 20680 1240 - 19160 830-1520 PE21
51700 69000 17240 - 34470 15310 - 31160 1930-3310 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure
 
bar
Proof
(Test)
Pressure
 
bar
Adjustable Set Point Range Deadband
Approximate
bar
Model Number & Wetted Parts
Increasing
Pressure
 
bar
Decreasing
Pressure
 
bar
Model
646PE*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68-0.83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
209 345 11.7 - 96.5 6.2 - 84.8 5.5-11.7 PE15
345 517 20.7 - 206.8 12.4 - 191.6 8.3-15.2 PE21
517 690 172.4 - 344.7 153.1 - 311.6 19.3-33.1 PE31

  • bar: 1.4 to 345
  • kPa: 137.9 to 34,474
  • psig: 20 to 5,000

Set Point - Decreasing

Set Point Ranges below describe the adjustable decreasing range of the entire series, for specific ranges by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psig
Proof
(Test)
Pressure

psig
Adjustable Set Point Range Deadband
Approximate
psi
Model Number & Wetted Parts
Increasing
Pressure

psig
Decreasing
Pressure

psig
Model
646PE*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
3000 5000 170 - 1400 90 - 1230 80 - 170 PE15
5000 7500 300 - 3000 180 - 2780 120 - 220 PE21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure 
kPa
Proof
(Test)
Pressure 
kPa
Adjustable Set Point Range Deadband
Approximate
kPa
Model Number & Wetted Parts
Increasing
Pressure 
kPa
Decreasing
Pressure 
kPa
Model
646PE*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
20700 34500 1170 - 9650 620 - 8480 550-1170 PE15
34500 51700 2070 - 20680 1240 - 19160 830-1520 PE21
51700 69000 17240 - 34470 15310 - 31160 1930-3310 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure
 
bar
Proof
(Test)
Pressure
 
bar
Adjustable Set Point Range Deadband
Approximate
bar
Model Number & Wetted Parts
Increasing
Pressure
 
bar
Decreasing
Pressure
 
bar
Model
646PE*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68-0.83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
209 345 11.7 - 96.5 6.2 - 84.8 5.5-11.7 PE15
345 517 20.7 - 206.8 12.4 - 191.6 8.3-15.2 PE21
517 690 172.4 - 344.7 153.1 - 311.6 19.3-33.1 PE31

  • bar: 0.68 to 312
  • kPa: 69.0 to 31,164
  • psig: 10 to 4,520

Adjustment Type

  • Field Adjustable

System Pressure

System Pressure below describes the system pressure range of the entire series, for specific values by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psig
Proof
(Test)
Pressure

psig
Adjustable Set Point Range Deadband
Approximate
psi
Model Number & Wetted Parts
Increasing
Pressure

psig
Decreasing
Pressure

psig
Model
646PE*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
3000 5000 170 - 1400 90 - 1230 80 - 170 PE15
5000 7500 300 - 3000 180 - 2780 120 - 220 PE21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure 
kPa
Proof
(Test)
Pressure 
kPa
Adjustable Set Point Range Deadband
Approximate
kPa
Model Number & Wetted Parts
Increasing
Pressure 
kPa
Decreasing
Pressure 
kPa
Model
646PE*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
20700 34500 1170 - 9650 620 - 8480 550-1170 PE15
34500 51700 2070 - 20680 1240 - 19160 830-1520 PE21
51700 69000 17240 - 34470 15310 - 31160 1930-3310 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure
 
bar
Proof
(Test)
Pressure
 
bar
Adjustable Set Point Range Deadband
Approximate
bar
Model Number & Wetted Parts
Increasing
Pressure
 
bar
Decreasing
Pressure
 
bar
Model
646PE*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68-0.83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
209 345 11.7 - 96.5 6.2 - 84.8 5.5-11.7 PE15
345 517 20.7 - 206.8 12.4 - 191.6 8.3-15.2 PE21
517 690 172.4 - 344.7 153.1 - 311.6 19.3-33.1 PE31

  • bar: 138 to 517
  • kPa: 13,790 to 51,711
  • psig: 2,000 to 7,500

Proof Pressure

Proof Pressure below describes the proof pressure range of the entire series, for specific values by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psig
Proof
(Test)
Pressure

psig
Adjustable Set Point Range Deadband
Approximate
psi
Model Number & Wetted Parts
Increasing
Pressure

psig
Decreasing
Pressure

psig
Model
646PE*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
3000 5000 170 - 1400 90 - 1230 80 - 170 PE15
5000 7500 300 - 3000 180 - 2780 120 - 220 PE21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure 
kPa
Proof
(Test)
Pressure 
kPa
Adjustable Set Point Range Deadband
Approximate
kPa
Model Number & Wetted Parts
Increasing
Pressure 
kPa
Decreasing
Pressure 
kPa
Model
646PE*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
20700 34500 1170 - 9650 620 - 8480 550-1170 PE15
34500 51700 2070 - 20680 1240 - 19160 830-1520 PE21
51700 69000 17240 - 34470 15310 - 31160 1930-3310 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure
 
bar
Proof
(Test)
Pressure
 
bar
Adjustable Set Point Range Deadband
Approximate
bar
Model Number & Wetted Parts
Increasing
Pressure
 
bar
Decreasing
Pressure
 
bar
Model
646PE*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68-0.83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
209 345 11.7 - 96.5 6.2 - 84.8 5.5-11.7 PE15
345 517 20.7 - 206.8 12.4 - 191.6 8.3-15.2 PE21
517 690 172.4 - 344.7 153.1 - 311.6 19.3-33.1 PE31

  • bar: 207 to 690
  • kPa: 20,684 to 68,948
  • psig: 3,000 to 10,000

Operating Temperature

  • -40° to 86° C (-40° to 187° F)

Deadband, Approximate

Deadband below describes the approximate deadband range of the entire series, for specific values by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psig
Proof
(Test)
Pressure

psig
Adjustable Set Point Range Deadband
Approximate
psi
Model Number & Wetted Parts
Increasing
Pressure

psig
Decreasing
Pressure

psig
Model
646PE*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
3000 5000 170 - 1400 90 - 1230 80 - 170 PE15
5000 7500 300 - 3000 180 - 2780 120 - 220 PE21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure 
kPa
Proof
(Test)
Pressure 
kPa
Adjustable Set Point Range Deadband
Approximate
kPa
Model Number & Wetted Parts
Increasing
Pressure 
kPa
Decreasing
Pressure 
kPa
Model
646PE*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
20700 34500 1170 - 9650 620 - 8480 550-1170 PE15
34500 51700 2070 - 20680 1240 - 19160 830-1520 PE21
51700 69000 17240 - 34470 15310 - 31160 1930-3310 PE31

Operating & Ordering Data:
MODEL 646PE 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure
 
bar
Proof
(Test)
Pressure
 
bar
Adjustable Set Point Range Deadband
Approximate
bar
Model Number & Wetted Parts
Increasing
Pressure
 
bar
Decreasing
Pressure
 
bar
Model
646PE*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68-0.83 PE12 Aluminum
400 Stainless Steel
Buna N/Teflon
209 345 11.7 - 96.5 6.2 - 84.8 5.5-11.7 PE15
345 517 20.7 - 206.8 12.4 - 191.6 8.3-15.2 PE21
517 690 172.4 - 344.7 153.1 - 311.6 19.3-33.1 PE31

  • bar: 0.68 to 33.1
  • kPa: 69.0 to 3,309
  • psig: 10 to 480

Process Connection - Threaded

  • 1/4" Female NPT

Environmental Protection

  • Hazardous Area
  • NEMA 13
  • NEMA 4, 7, 9, 13 / IP54, 66

Switch Type

  • DPDT
  • SPDT

Electrical Assembly

  • Hermetic Seal

Electrical Rating

Electrical Characteristics:  
VOLTS AMPERES
SPDT DPDT "M" Dbl Brk"X"
Resistive Resistive Resistive
Silver Contacts
125 AC - 50/60 Hz 15 5 15
250 AC - 50/60 Hz 15 5 15
480 AC - 50/60 Hz 15 - 15
28 DC     2 5 -
125 DC     0.5 0.5 1
250 AC - 50/60 Hz 0.2 - 0.5
Gold Contacts
125 AC - 50/60 Hz 1 Max 1 Max -
30 DC     1 Max 1 Max -
SPDT (Single Pole Double Throw)
A SPDT switching element has one normally open, one normally closed and one common terminal. Three terminals mean that the switch can be wired with the circuit either normally open (N/O) or normally closed (N/C).

DPDT (Double Pole Double Throw)
A DPDT switching element has six electrical terminals. In simple terms, it is two SPDT switching elements operating simultaneously at the same settings. This type of switch can handle two independent circuits without using a relay.

Normally Closed Switching Element
A Normally Closed (NC) Switching Element is one in which the terminals are wired so that current can flow through the switching element until the plunger pin is actuated to open the circuit.

  • 1 A at 125 Vac, 50/60 Hz
  • 11 A at 125/250 Vac Resisitve, 5 A at 28 DC, 0.5 A at 125 DC
  • 15 A at 125/250/480 Vac Resistive 0.5 A at 125 DC, 0.2 A at 250 DC

Electrical - Free Leads

Available selections listed below, free leads are standard.
  • 18" (45 cm) Free Leads
  • 18" (45 cm) Teflon Leadwire

Electrical Contacts

Available electrical contact materials listed below, silver is standard.
  • Gold
  • Silver

Electrical Connectors

Available selections listed below, 1/2"-14 MNPT is standard.
  • 1/2" Male NPT

Electrical Certification

  • ±5%
  • 8-12 Vdc

Enclosure/Body Material

  • Aluminum

Process Connection Material

Available pressure port materials listed below, Aluminum is standard.
  • Aluminum

O-Ring Material

Available O-ring materials listed below, Buna-N is standard.
  • Buna-N
  • Ethylene Propylene
  • Viton

Piston Material

  • Stainless Steel, 400 Series

Manual Reset

  • Manual Reset on Increasing Pressure