Blacoh Sentry Pulsation Dampeners

SENTRY Pulsation Dampeners use a compressed gas separated by a bladder from the process fluid like a shock absorber. During the pump's discharge stroke, fluid pressure displaces the bladder, compressing the trapped gas. During the pump's next cycle, fluid flow stops momentarily causing expansion of the compressed gas, forcing the bladder to push accumulated fluid back into the discharge line. This fills the void created by cycle shift and dampens pulsation up to 99%.

• Protects pumps, piping, valves, fittings, meters and in-line instrumentation from damaging pulsations, cavitation, thermal expansion, hydraulic shock and water hammer.
• Prevent destructive pressure surges caused by pump startup and shutdown.
• Prevent hydraulic shock resulting from emergency valve closure and other equipment shutdown.
• Prevent agitation, foaming, splashing and degradation of product.
• Ensure accuracy, longevity and repeatability of flow meters and gauges.
• Ensure a smooth, steady flow in metering and chemical injection processes.
• Ensure uniform and continuous application in spraying and coating processes.
• Ensure proper measurement, flow and filling applications of food and pharmaceutical products.
• Ensure consistent flow when dosing, blending or proportioning process additives.
• Ensure a smooth transfer of viscous or abrasive fluids.

Positive displacement pumps contain an inlet valve that alternately opens and closes, creating an acceleration and deceleration of fluid into the pump. Sentry Inlet Stabilizers minimize these pressure fluctuations and acceleration head losses by preventing fluid column separation at the pump's inlet. The patented* "J" Model air control allows for pressure or vacuum settings and is adjustable for suction lift or positive inlet pump conditions.

• Protect pumps, valves, diaphragms and pistons from excess stress and strain.
• Protect inlet system components from vibration and fatigue.
• Prevent premature system component failure and cavitation.
• Prevent gauge damage due to vibration.
• Ensure steady inlet flow conditions to extend diaphragm life.
• Ensure complete chamber fill to maximize component service life.
• Ensure accuracy of inlet side gauges.

Sentry Pulsation Dampeners, Surge Suppressors and Inlet Stabilizers come in a full range of chemically resistant materials for even the most corrosive applications. The simple, reliable design allows for quick installation and easy in-line maintenance. All Sentry housings are made in the USA, and each unit is tested at design pressure or higher to assure proper function and leak-free operation.

• Positive displacement pump discharge sizes from 0.125" to 6" (3.18mm to 152.4mm)
• Temperature ranges from -60°F to +400°F (-51°C to +204°C)
• Pressure ranges up to 4,000 psi (276 bar)
• Custom models available up to 100 gallons (378.5L) and 25,000 psi (1,724 bar)
• Sanitary and flow-through models available for biotech, pharmaceutical and food industries