SENTINEL Injection Quills are designed to safely and efficiently disperse chemicals into process pipelines. Chemicals are injected directly and evenly into the center of the process flow away from the pipe wall and where flow velocity is highest. This direct injection into the center of the flow avoids chemical contact with pipe walls and ensures more even mixing with the process fluid. The integral spring-loaded check disk prevents backflow of pressurized process fluid into the chemical feed when the pump is off or the chemical feed is disconnected.

The start and stop action of positive displacement pumps rapidly accelerates and decelerates fluid in motion resulting in pulsations observed as pressure spikes. Pulsation dampeners absorb the energy of these pressure spikes by accumulating and then releasing process fluid when the pump is on its suction stroke. By keeping the fluid in motion, dampeners eliminate vibration and the pulsing, inconsistent flow caused by pulsation.

Blacoh SENTRY Surge Suppressors use compressed gas separated by a bladder from process fluid to suppress hydraulic surge or water hammer caused by quick-closing valves, back surge, and pump start-up/shut-down. Without suppression, shock waves created will continue to oscillate back and forth until dissipated by friction or system component failure.

The inlet valve on positive displacement pumps alternately opens and closes creating acceleration and deceleration of fluid flow to the pump, causing alternating drops in pressure and pressure spikes in the inlet piping. Installed at the pump’s inlet, the Inlet Stabilizer acts as an accumulator to store fluid and release it back into the line as needed. Virtually all acceleration head loss is eliminated because the pump draws fluid from the dampener and not the pipeline, avoiding the risk of cavitation and ensuring complete chamber fill on each inlet stroke of the pump.

SPILLSTOP is a fully pneumatic device that attaches directly to the exhaust of an AODD pump. When the pump’s diaphragm fails, process fluid that would have been expelled out through the pump’s exhaust is captured in the SPILLSTOP’s housing receptacle. The contained fluid raises the internal float to automatically shut down the failed pump. SPILLSTOP can also be equipped with an optional warning alarm whistle, pneumatic-to-electric switch to power warning lights or connect to a SCADA panel, and additional pump shutoff valves for multiple pumps, high suction tank applications, and/or backup pump startup.

Without proper protection, process fluids regularly contaminate and damage inline instrumentation. SENTINEL Diaphragm Seals, also referred to as gauge guards or gauge isolators, employ a chemically resistant diaphragm to isolate and protect system instrumentation from corrosive process fluids, freezing and slurries.

Pressure relief valves are designed to protect pumping systems from over pressure damage caused by defective equipment or blockage in the pump system line. 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 of the relief port, back to the system fluid tank or to the suction side of the pump.

SENTINEL Back pressure valves are designed to enhance pumping system performance by applying a continuous back pressure to the pump, while also acting as an anti-syphon valve. Diaphragm back pressure valves apply positive discharge pressure to a metering pump system to improve the consistency of dosage rates by shielding the pump from 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.

SENTINEL Calibration Columns, also referred to as calibration cylinders, provide a simple and accurate method for measuring and calibrating pump flowrates in chemical dosing applications. Calibration columns are installed on the suction line of the pump with the top of the column vented back to the supply tank or drain. Using isolation valves, the column is filled with process fluid from the supply tank and drawn down in a timed, one minute test. The fluid remaining in the column at the end of the test is measured on the column’s graduated scale in both milliliters/minutes (mL/min) and US gallons/hour (US GPH).

Certain chemicals commonly used in metering and dosing applications are prone to outgassing. Other chemicals produce hazardous vapors that can escape the system at pump startup. A metering pump that has been off for a period of time can lose its prime and won’t pump fluid due to gas in the pump and discharge line. In all of these situations, gasses and vapors in a pumping system must be properly vented. Degassing valves are typically installed on a T-connection at the highest point in the piping system with the discharge port piped back to the supply tank or other safe location. In applications using chemicals that typically outgas, degassing valves can be installed on both the inlet and discharge side of the pump for maximum venting.

The Blacoh pulsation dampener designed exclusively for use with AODD pumps in 316 stainless steel with a PTFE-backed diaphragm for maximum compatibility. Featuring a unique automatic air control that reduces air consumption to save on energy costs.

SENTINEL Normally Closed Shutoff Valves offer an excellent high flow coefficient and a low pressure drop that equates to overall faster and smoother fluid flow. Valves are pneumatically controlled and use an internal piston to allow or prevent air or fluid flow. The normally closed valve opens when air pressure is applied to the pneumatic control port.