SENTRY Pulsation Dampeners

 

SENTRY Pulsation Dampeners & Surge Suppressors remove hydraulic shock and vibration, enhancing all-around performance and reliability of fluid flow applications.

 

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 & Surge Suppressors remove virtually all hydraulic shock, enhancing all-around performance and reliability of fluid flow in industrial and chemical transfer applications.

 

SENTRY BENEFITS:

 

• 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
• 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 FEATURES:

 

• 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 applications

SENTRY Pulsation & Surge Control

 

SENTRY Inlet Stabilizers improve liquid flow to the inlet side of any pump, extending the service life of all inlet system components.

 

Positive displacement (PD) pumps contain an inlet valve that alternatively opens and closes, creating an acceleration and deceleration of fluid into the pump.

 

The patented "J" Model Inlet Stabilizer works to minimize these pressure fluctuations and acceleration head losses by preventing fluid column separation at the pump's inlet. This improved flow to the pump's inlet effectively extends the service life of all inlet system components.

 

INLET STABILIZER BENEFITS:

 

• Ensure complete chamber fill, extending component service life
• Protect pumps, valves, diaphragms, and pistons from excess stress and strain
• Protect inlet components from vibration and fatigue
• Ensures accuracy of inlet side gauges
• Prevent premature system component failure
• Prevent cavitation
• Prevent gauge damage due to vibration
• Extend diaphragm life in all diaphragm pumps

 

INLET STABILIZER FEATURES:

 

• Improved inlet flow conditions
• Patented control unit allows you to adjust for pressure or vacuum settings
• Regulates for suction lift or positive inlet pump conditions
• Available in 10 cu in (.16L) to 10 gallons (37.85L) sizes
• All standard models available from stock
• Bodies available in a full range of chemically resistant materials
• U.S. Patent #6,089,837

SENTINEL Diaphragm Seals

 

SENTINEL Diaphragm Seals protect and isolate all forms of system instrumentation from hazardous and corrosive process fluids.

 

Without 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 FEATURES:

 

• 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

BACK PRESSURE VALVES

 

SENTINEL diaphragm back pressure valves are designed to enhance the performance of pumping systems by applying a continuous back pressure to the system pump, while also acting as an anti-syphon valve. Robust construction ensures reliability in the rigorous service of municipal and industrial applications. Wetted materials include: PVC, CPVC, PP, PVDF, PTFE, 316 SS, A 20 and Hastelloy C. Available sizes: 1/4" - 4" depending on model.

 

FEATURES:

 

• High Reliability / Low Cost
• Compact Size for OEM Applications
• Adjustable 10 - 150 psi
• Optional 350 psi Rated Valve
• Anti-Siphon Function
• Robust, Machined Construction
• Vulcanized PTFE/EPDM Diaphragm
• Wide Range of Materials

 

SENTINEL diaphragm back pressure valves apply positive discharge pressure to a metering pump system to prevent siphoning and eliminate varying dosage rates caused by fluctuating downstream pressure. The diaphragm is held against the valve seat by an internal spring. When the preset pressure is exceeded, the diaphragm is forced up and system fluid flows through the valve to the injection point. The valves are preset for 50 psi, however they are field adjustable from 10 - 150 psi via the adjustment screw. Installation should be as close to the injection point as possible to prevent system line drainage, and it is most important that all pumping system equipment such as pulsation dampeners and pressure gauges are between the pump and back pressure valve.

 

PRESSURE RELIEF VALVES

 

SENTINEL diaphragm pressure relief valves are designed to protect pumping systems from over pressure damage caused by defective equipment or a blockage in the pump system line. Robust construction ensures reliability in the rigorous service of municipal and industrial applications. Wetted materials include: PVC, CPVC, PP, PVDF, PTFE, 316 SS, A 20 and Hastelloy C. Available sizes: 1/4" - 4" depending on model.

 

FEATURES:

 

• High Reliability / Low Cost
• Compact Size for OEM Applications
• Adjustable 10 - 250 psi
• Optional 350 psi Rated Valve
• 3 Port, 2 Port & 90° Configuration
• Robust, Machined Construction
• Vulcanized PTFE/EPDM Diaphragm
• Wide Range of Materials

 

SENTINEL diaphragm pressure relief valves operate when the pressure in the pumping system exceeds the preset pressure of the valve. The diaphragm is held against the valve seat by an internal spring. When the preset pressure is exceeded the diaphragm is forced up and the system fluid flows out the relief port, back to the system fluid tank or to the suction side of the pump. The valves are pre-set at 50 psi, however they are field adjustable from 10 - 150 psi, (optional 350 psi) via the adjustment screw. The relief valve should be set approximately 15 psi higher than the system pressure. Installation should be made as close to the pump as possible, without any valves or accessories between the relief valve and the pump. Consult your pump manufacturer for recommendations.