Standard Group

Surge Suppressors

Positive Displacement (PD) pumps create pulsation and hydraulic shock due to the reciprocating nature of their stroking action, potentially damaging the entire pumping system.

Blacoh's SENTRY® Pulsation Dampeners and Surge Suppressors remove virtually all hydraulic shock, enhancing all-around performance and reliability of fluid flow in industrial and chemical transfer applications.

  • Sizes available for all positive displacement pumps with discharge sizes from 1/8" (3.18mm) to 6" (152.4mm).
  • Simple, reliable design and quick installation.
  • Easy in-line maintenance.
  • Pressure ranges up to 4000 PSI (276 BAR) available from stock.
  • Temperature ranges from -60°F to +400°F (-51°C to +205°C) available from stock.
  • Custom models available up to 100 gallons (378.5L) and 25,000 PSI (1724 BAR).
  • Bodies available in a full range of chemically resistant materials.
  • Bladders available for even the most corrosive application.
  • Whether a piston, plunger, air diaphragm, peristaltic, gear, or diaphragm metering pump, a SENTRY Pulsation Dampener placed at the pump's discharge will produce a near steady fluid flow up to 99% pulsation and vibration free.
  • Revolution Pulsation Dampener.
  • New CPVC construction and threaded housings are ideal for corrosive environments.
  • XP Pulsation Dampener.
  • Designed for high-pressure applications up to 4000 PSI (276 BAR).
  • 2.5 Gal. Aluminum Pulsation Dampener.
  • Low-cost, high-quality Pulsation Dampener for 2" aluminum air diaphragm pumps.
  • Socket Weld Series.
  • Available in PVC and CPVC from 1/2" to 2” connections for hard to seal chemicals like sodium hydrochlorite.
  • Protects pipes, valves, fittings, meters, and in-line instrumentation from destructive pulsations, surges, cavitation, thermal expansion, and water hammer.
  • Creates steady and continuous flow when dosing, blending or proportioning additives.
  • Ensures accuracy, longevity, and repeatability of in-line meters.
  • Enables uniform application of material in spraying and coating systems.
  • Reduces product agitation, foaming, splashing and degradation of product.
  • Provides liquid energy storage for emergency valve closure and other equipment shutdown.
  • Reduces overall energy cost with continuous flow, rather than start/ stop flow.
  • Operates as a reservoir for make-up fluid.
Sentry Pulsation Dampeners

Finish Thompson Inc.
Stanflo - Centrifugal
Stanflo - Submersible