Pressure Reducing Valves
PRESSURE REDUCING VALVE S-300: The valve maintains a preset downstream pressure, regardless of upstream pressure or flow-rate fluctuations.
The main valve is controlled by either a 3-way pilot valve (allowing full opening when upstream pressure drops below the required downstream set pressure), or by a 2-way pilot valve (creating minimal pressure differential in open position).

LEAK PEN
The Smallest, Full-Function Water Leak Tester. With Excellent Features: The Leak PEN system offers you total freedom of movement. All thanks to Wagamet Radio Frequency (RF) technology. The integrated radio transponder transmits the audio frequency signal to the wireless headphones. The transmission range varies with the type of application. If you are using the Leak PEN to test fittings which have cast iron jackets, the radio hop shortens to six and a half feet. Outdoors, it has a transmission range of about 65 feet.
The automatic level control prevents transponder overload over a wide input signal range. Leak status: LED display. Resolution: 0 to 10 noise levels. Battery: commercially available 1.5 V alkaline batteries Radio transmission: up to 50 feet. Optional extras: Radio headphones with volume control and fine adjustment for radio link. Leak PEN is also available as a complete pack in a practical carrying case

Doppler
DFM 4.0 Doppler Flow Meter: Measure flow from outside a pipe. The Greyline DFM 4.0 is ideal for "difficult liquids" that would damage regular flow meters - wastewater, slurries, sludge, chemicals, viscous liquids and abrasives. There is no obstruction to flow and no pressure drop. The standard, strap-on ultrasonic sensor fits any pipe 1/2" (12.5 mm) Inside Diameter or larger. The electronics/display enclosure can be mounted nearby.
Use the isolated 4-20mA to transmit flow to remote displays, recorders or controllers. The 3 programmable relays can be used for flow control, pump protection or flow proportionate pulse. Calibration is easy with the built-in 3-key calibrator. Display and totalize flow in your choice of engineering units (gallons, liters etc.)
Sensor cable can be extended up to 500 ft. (152 m) with no loss of signal. The DFM 4.0 can be equipped with intrinsic safety barriers for sensor installation in hazardous rated locations. Other options include high temperature sensors and a built-in 50,000 point Data Logger.
The DFM 4.0 includes a new digital signal processor to filter background noise and interference and to measure flow rates accurately in liquids containing gas bubbles or solids particles.