SENTINEL Diaphragm Seals from Blacoh Fluid Control

SENTINEL,Diaphragm,Seals,Blacoh,Fluid,ControlWithout proper protection, hazardous and corrosive process fluids regularly contaminate and damage system instrumentation. The strength and durability of Sentinel Diaphragm Seals protect and isolate all forms of system instrumentation for a minimum of three years...guaranteed.*

SENTINEL Benefits:

  • Protect and isolate all forms of system instrumentation from hazardous and corrosive process fluids
  • Ensure gauge and switch accuracy
  • Smooth out erratic pressure surges
  • Extend the life of pressure instrumentation
  • Protect gauges from freezing and slurries
  • Receive accurate and consistent readings when working with corrosive or solids-laden fluids
  • Replace expensive gauges with low cost utility gauges

SENTINEL Benefits:

  • Three year guarantee on diaphragms and seal bodies
  • Accuracy of ±2% full deflection or better
  • Pressure ranges up to 1000 PSI (68.95 BAR)
  • 1/4" (6.35mm) up to 3/4" (19.05mm) inlet ports
  • All standard models available from stock
  • Bodies available in a full range of chemically resistant materials
  • Custom models available

SENTINEL Diaphragm Seals
SENTINEL Diaphragm Back Pressure Valves
SENTINEL Diaphragm Pressure Relief Valves


Protect & isolate all forms of system instrumentation





Available in a variety of chemically resistant materials

Sentinel "Revolution"
All-PVC construction and threaded housings are ideal for corrosive environments


Sentinel "Flow-Thru"
Prevents clogging of viscous process fluids