Privacy Statement
Skip Ribbon Commands
Skip to main content
  • Product Info
  • Literature


Provide operating control and automatic high limit protection for vapor heating systems with pressures up to 4 psi (8 kPa). All models have Microswitch snap switches to open or close a circuit on a pressure rise.


  • Stainless steel diaphragm for use with liquids, air, noncombustible gases, ammonia, oxygen, distilled water and similar media.
  • Provide SPDT switching.
  • Clear plastic cover allows observation of the pressure settings.
  • Mount using hexagonal fitting with 1/4 in. NPT internal threads for direct mounting to the 14026 (steel) or 50024585-001 (brass) Steam Trap (siphon loop).
  • Ground Screw terminal.

Product Specifications

Provide operating control and automatic limit protection for pressure systems with pressures up to 4 psi (8 kPa)
Dimensions (in.)
5 1/8 in. high x 4 1/2 in. wide x 4 1/2 in. deep.
Dimensions (mm)
130 mm high x 114 mm wide x 114 mm deep.
1/4 in. NPT internal thread or surface mount through back of case
Approvals, Underwriters Laboratories Inc.
Listed: File No. MP466, Guide No. MBPR
Approvals, Canadian Standards Association
Certified: File No. LR1620, Guide No. 400-E-O
Electrical Connections
Screw terminals
Contact Ratings
120 Vac Switch Contact-- 8.0 AFL, 48.0 ALR, 10.0 A resistive; 240 Vac Switch Contact-- 5.1 AFL, 30.6 ALR, 5.0 A resistive
Operating Temperature Range (F)
-35 F to +150 F
Operating Temperature Range (C)
-37 C to +66 C
Approvals, Swiss RE
Sensor Element
Stainless Steel diaphragm
Operating Range (psi)
0 to 4 psi
Operating Range (kPa)
0 to 28 kPa
Differential Pressure Range (psi)
2 to 16 oz/in2
Differential Pressure Range (kPa)
0.9 to 6.9 kPa
Differential Type
Switch Operation
Auto recycle
Switching Action
SPDT make R-W, break R-B on pressure rise
Pipe Connection
Main or High Pressure--1/4 in. NPT internal thread
There is no literature attached to this product, please try another material search. If you believe that there should be literature for this product, please contact Customer Care for website support.