Balancing, Drives & Controls

  • Mounted at high points within your engineered piping system, MetraVents will remove air pockets, providing an inexpensive and positive method to relieve air pressure in the system. Engineered to provide many years of maintenance-free, trouble-free operation, MetraVents will return your investment many times over during the life of your system.
    • Energy savings up to 50% when operating fans and pumps
    • Drives up to 250 hp
    • User-friendly control panel with intuitive interface
    • Reliable control for a wide range of HVAC applications, including special control option in the event of fire
    • Complete system integration with Siemens expertise
    • Ethernet capabilities include BACnet IP and Modbus TCP
    • Environment safe – RoHS compliant
  • Stainless steel internal components withstand corrosion. Cast iron bodies for long, dependable life. Wide range of seat pressures available - up to 250 psig to fit a wide variety of applications.
    • Lead Free Brass Design ◦Brass models ½” through 3” suitable for use in all potable water systems ◾AB1953 Certified
    • Calibrated Accurate Flow Control and Measurement
    • Sizes from ½” – 12” ◦Ball valve style ½” through 4”
    • Multiple End Connections Available ◦Union – Upstream (1/2” – 2”)
    • Flow Range up to 7,200 GPM
    • Pre-Balance Design Capability
    • Integrated Valved Readout Ports
  • Large ports handle high capacities. Wide range of seat pressures available - up to 175 psig. Durable, cast iron bodies provide long service. Stainless steel valve trim, floats and air vents increase service life.
    • Universal design serves the widest variety of applications ◦For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering devices and others
    • 1″ NPT
    • Two electrical knock-outs allows connection from either end
    • Sensitivity adjusting screw makes flow adjustment easy
    • Single pole, double throw snap switch
    • Hardened stainless steel bearings minimize friction
    • Sealed Monel bellows
    • Four stainless steel paddles included -1″, 2″, 3″ & 6″ (25, 50, 80, & 150mm)
  • Sealed Monel bellows Single pole, double throw snap switch Four stainless steel paddles included - 1 in., 2 in., 3 in. and 6 in. (25, 50, 80 and 150mm) Sensitivity adjusting screw makes flow adjustment easy
  • Solid state capacitive sensing device that has two level sense points: pump on and pump off. Available as a stand-alone pump controller rated to operate a pump up to 1hp or as a integral component of a complete system. The stand alone control is available as a piggyback plug, Model OS20PBPR6 or hardwire unit, Model OSS20R6.
  • Engineered in accordance with Section IV of the ASME boiler and pressure code for heating boilers with capacities certified by the National Board of Boiler and Pressure Vessel Inspectors. Offer the highest BTUH ratings available on the market today for valves in their class (790,000 to 5,999,000 BTUH) EPDM diaphragm operated (cast iron models) and diaphragm assisted (bronze models) have an effective area approximately 5 times greater than conventional pop-type relief valves to help overcome the effects of fouling. Low differential between opening and closing pressures helps to prevent conditions under which system water might flash to steam and cause hammering
  • Removes Entrained Air and Suspended Sediment: To protect the system against damage, To provide better heat transfer, To reduce energy costs, To eliminate system noise Centifugal Flow Pattern: Creates low pressure vortex in center of tank, Lowers pressure drop through the tank Models from 2 in. - 36 in.: Cast iron (2 in. through 3 in.) and carbon steel (3 in. through 36 in.) bodies Other body materials available upon request for 3 in. through 36 in. models): NPT (2 in. & 2-1/2 in.), flange, or groove connections available, With or without strainer 304 stainless steel 3/16 in. diameter perforations, 51% open area Designed, constructed, inspected, and stamped per Section VIII, Division 1 of the ASME Code Standard models rated for 125 psi (862 kPa) working pressure. Higher pressures available upon request
  • •Flow Cone (patent pending) eliminates recirculation zones, directing flow toward the pump, improving flow conditioning, and maximizing pump efficiency retention •Space saving elbow design facilitates a close transition between return piping and pump suction, eliminating the need for straight lengths of pipe and separate long radius elbows or reducing elbows. •Full Length straightening vanes assure uniform flow pattern for pump inlet •Large diameter orifice cylinder prevents debris from entering pump suction while maintaining low pressure drop •Fine mesh throwaway start-up strainer assures cleaner, more trouble free system. •Optional pressure/temperature ports permit checking of system conditions and verification of start-up strainer presence. •Completely removable internals for fast and easy maintenance. •Choice of carbon steel or stainless steel internals. •Wide size range from 2”x1½” to 10”x10” •Common installation dimensions compared to previous B&G designs making retrofits easy •Easily removable end cap with reusable o-ring •Plug/Blow down connection permits routine maintenance
  • Combines 3 valves in 1, saving time and money
    • Calibrated balance valve with nameplate and memory stop/button
    • Spring loaded check valve
    • Isolation/Shut-off valve
    Wide range of sizes and connections
    • Straight Pattern Flanged: 2” – 14”
    • Straight Pattern Grooved: 2” – 12”
    • Balanced Straight Pattern Flanged: 3” – 16”
    • Angle Pattern Flanged: 2” – 10”
    • Model 3DV FNPT and Rotatable Flange: 1” – 2”
    Excellent Cv range
    • From 9 to 3,225