• Adjustable Set Point Range:
    • Increasing: 20 to 5000 psig, 137.9 to 34473.7 kPa, 1.4 to 345 bar
    • Decreasing: 10 to 4520 psig, 69.0 to 31164.3 kPa, 0.68 to 312 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, 690 bar
  • Wetted Materials:
    • Pressure Port: 1/4" FNPT Aluminum
    • Piston: 400 Stainless Steel
    • O-Ring: Buna N, Teflon
  • Relay: SPDT or DPDT
  • UL, CRN, CE Mark, General Purpose
The above description encapsulates the entire product series. Specifications for individual configurations may vary depending on the selection chosen.
read more...

6 Models In Stock

604P12
604P12
$129.00 While Supplies Last
  • Base Model
  • 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

    604P12
  • Process Connection

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

    Buna-N/Teflon
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    UL, CE, CRN
604P15
604P15
$169.00
  • 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

    604P15
  • Process Connection

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

    Buna-N/Teflon
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    UL, CE, CRN
604P21
604P21
$169.00
  • Base Model
  • psig
    • Increasing 300 to 3000
    • Decreasing 180 to 2780
  • kPa
    • Increasing 2068.5 to 20684.3
    • Decreasing 1241.1 to 19167.4
  • bar
    • Increasing 20.7 to 207
    • Decreasing 12.4 to 192
  • Base Model

    604P21
  • Process Connection

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

    Buna-N/Teflon
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    UL, CE, CRN
604P31
604P31
$169.00
  • Base Model
  • psig
    • Increasing 2500 to 5000
    • Decreasing 2220 to 4520
  • kPa
    • Increasing 17236.9 to 34473.8
    • Decreasing 15306.4 to 31164.3
  • bar
    • Increasing 172 to 345
    • Decreasing 153 to 312
  • Base Model

    604P31
  • Process Connection

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

    Buna-N/Teflon
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    UL, CE, CRN
604PJ31
604PJ31
$175.00
  • CSA (J)
  • psig
    • Increasing 2500 to 5000
    • Decreasing 2220 to 4520
  • kPa
    • Increasing 17236.9 to 34473.8
    • Decreasing 15306.4 to 31164.3
  • bar
    • Increasing 172 to 345
    • Decreasing 153 to 312
  • Base Model

    604P31
  • Process Connection

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

    Buna-N/Teflon
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    CSA
604PM15
604PM15
$214.00
  • 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

    604P15
  • Process Connection

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

    Buna-N/Teflon
  • Output

    DPDT
  • Electrical Contacts

    Silver
  • Manual Reset

    None
  • Agency Approvals

    UL, CE, CRN

Selected Configuration

Model #:

604P12

Price:
$129.00 USD
Availability:
In Stock (50+)
Min. Qty:
5 Items

Configuration

reset configuration

Agency Approvals

Available agency approvals listed below, CSA is a non standard option.
  • CE
  • CRN - Alberta
  • CRN - British Columbia
  • CRN - Manitoba
  • CRN - N.W. Territories
  • CRN - Saskatchewan
  • CSA
  • cUL
  • EMC Directive
  • LVD
  • PED
  • RoHS
  • UL

NACE & NIST

  • NACE

Environmental Protection

  • NEMA 4, 13 / IP65, 66
  • Non-Hazardous Area

Set Point - Increasing

Set Point Ranges below describe the adjustable increasing range of the entire series, for specific ranges by model click desired unit of measurement below.
MODEL 604P 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psi
Proof
(Test)
Pressure

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

psi
Decreasing
Pressure

psi
Model
604P*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 P12 Aluminum
400 Stainless Steel
Buna N
3000 5000 170 - 1400 90 - 1230 80 - 170 P15
5000 7500 300 - 3000 180 - 2780 120 - 220 P21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 P31

Operating & Ordering Data:
MODEL 604P 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
604P*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-82 P12 Aluminum
400 Stainless Steel
Buna N
20700 34500 1170 - 9650 620 - 8480 550-1170 P15
34500 51700 2070 - 20700 1240 - 19200 830-1520 P21
51700 69000 17200 - 34500 15300 - 31200 1930-3310 P31

MODEL 604P 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
604P*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68 - 0.83 P12 Aluminum
400 Stainless Steel
Buna N
207 345 11.7 - 96.5 6.2 - 84.8 5.5 - 11.7 P15
345 517 20.7 - 207 12.4 - 192 8.3 - 15.2 P21
517 690 172 - 345 153 - 312 19.3 - 33.1 P31

  • 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 range by model click desired unit of measurement below.
MODEL 604P 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psi
Proof
(Test)
Pressure

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

psi
Decreasing
Pressure

psi
Model
604P*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 P12 Aluminum
400 Stainless Steel
Buna N
3000 5000 170 - 1400 90 - 1230 80 - 170 P15
5000 7500 300 - 3000 180 - 2780 120 - 220 P21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 P31

Operating & Ordering Data:
MODEL 604P 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
604P*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-82 P12 Aluminum
400 Stainless Steel
Buna N
20700 34500 1170 - 9650 620 - 8480 550-1170 P15
34500 51700 2070 - 20700 1240 - 19200 830-1520 P21
51700 69000 17200 - 34500 15300 - 31200 1930-3310 P31

MODEL 604P 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
604P*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68 - 0.83 P12 Aluminum
400 Stainless Steel
Buna N
207 345 11.7 - 96.5 6.2 - 84.8 5.5 - 11.7 P15
345 517 20.7 - 207 12.4 - 192 8.3 - 15.2 P21
517 690 172 - 345 153 - 312 19.3 - 33.1 P31

  • 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 range of the entire series, for specific values by model click desired unit of measurement below.
MODEL 604P 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psi
Proof
(Test)
Pressure

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

psi
Decreasing
Pressure

psi
Model
604P*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 P12 Aluminum
400 Stainless Steel
Buna N
3000 5000 170 - 1400 90 - 1230 80 - 170 P15
5000 7500 300 - 3000 180 - 2780 120 - 220 P21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 P31

Operating & Ordering Data:
MODEL 604P 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
604P*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-82 P12 Aluminum
400 Stainless Steel
Buna N
20700 34500 1170 - 9650 620 - 8480 550-1170 P15
34500 51700 2070 - 20700 1240 - 19200 830-1520 P21
51700 69000 17200 - 34500 15300 - 31200 1930-3310 P31

MODEL 604P 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
604P*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68 - 0.83 P12 Aluminum
400 Stainless Steel
Buna N
207 345 11.7 - 96.5 6.2 - 84.8 5.5 - 11.7 P15
345 517 20.7 - 207 12.4 - 192 8.3 - 15.2 P21
517 690 172 - 345 153 - 312 19.3 - 33.1 P31

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

Proof Pressure

Proof Pressure below describes the range of the entire series, for specific values by model click desired unit of measurement below.
MODEL 604P 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psi
Proof
(Test)
Pressure

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

psi
Decreasing
Pressure

psi
Model
604P*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 P12 Aluminum
400 Stainless Steel
Buna N
3000 5000 170 - 1400 90 - 1230 80 - 170 P15
5000 7500 300 - 3000 180 - 2780 120 - 220 P21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 P31

Operating & Ordering Data:
MODEL 604P 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
604P*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-82 P12 Aluminum
400 Stainless Steel
Buna N
20700 34500 1170 - 9650 620 - 8480 550-1170 P15
34500 51700 2070 - 20700 1240 - 19200 830-1520 P21
51700 69000 17200 - 34500 15300 - 31200 1930-3310 P31

MODEL 604P 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
604P*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68 - 0.83 P12 Aluminum
400 Stainless Steel
Buna N
207 345 11.7 - 96.5 6.2 - 84.8 5.5 - 11.7 P15
345 517 20.7 - 207 12.4 - 192 8.3 - 15.2 P21
517 690 172 - 345 153 - 312 19.3 - 33.1 P31

  • 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 desired unit of measurement below.
MODEL 604P 1/4" Aluminum Pressure Port & 400 Stainless Steel Piston
Maximum
System
Pressure

psi
Proof
(Test)
Pressure

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

psi
Decreasing
Pressure

psi
Model
604P*
Wetted
Parts
2000 3000 20 - 200 10 - 188 10 - 12 P12 Aluminum
400 Stainless Steel
Buna N
3000 5000 170 - 1400 90 - 1230 80 - 170 P15
5000 7500 300 - 3000 180 - 2780 120 - 220 P21
7500 10000 2500 - 5000 2220 - 4520 280 - 480 P31

Operating & Ordering Data:
MODEL 604P 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
604P*
Wetted
Parts
13800 20700 140 - 1380 68 - 1290 68-82 P12 Aluminum
400 Stainless Steel
Buna N
20700 34500 1170 - 9650 620 - 8480 550-1170 P15
34500 51700 2070 - 20700 1240 - 19200 830-1520 P21
51700 69000 17200 - 34500 15300 - 31200 1930-3310 P31

MODEL 604P 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
604P*
Wetted
Parts
138 207 1.4 - 13.8 0.68 - 12.9 0.68 - 0.83 P12 Aluminum
400 Stainless Steel
Buna N
207 345 11.7 - 96.5 6.2 - 84.8 5.5 - 11.7 P15
345 517 20.7 - 207 12.4 - 192 8.3 - 15.2 P21
517 690 172 - 345 153 - 312 19.3 - 33.1 P31

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

Process Connection - Threaded

  • 1/4" Female NPT

Switch Type

  • DPDT
  • SPDT

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     6 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
  • 15 A at 125/250/480 Vac Resistive, 0.4 A at 125 DC, 0.2 A at 250 DC
  • 5 A at 125/250 Vac Resistive, 5 A at 28 Vdc, 0.5 A at 125 Vdc

Electrical Contacts

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

Electrical Connectors

  • Terminal Strip - Internal

Enclosure/Body Material

  • Aluminum

Process Connection Material

  • Aluminum

O-Ring Material

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

Diaphragm Material

  • None

Piston Material

  • Stainless Steel, 400 Series

Standard Features

  • Internal Case Ground
  • Weatherproof