Maric Flow Control Valve

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Maric Flow Control Valves provide a fixed constant flow rate irrespective of pressure differential across the valve over a wide range. Precision Series (differential range 140-1,000 kpa) offers to control the stated flow range with +/-10% and high pressure models HP1 (differential range 140-1,500 kpa) or HP2 (170-2,000 kpa) +/-20% accuracy.

The principle is simple…the bodies are made to rigid engineering standards in DR Brass, Chromed Brass, Gunmetal, PVC or 316SS and are fitted with a control rubber in either Nitrile (std), EPDM (opt) or Viton (opt). As the pressure differential increases, the control rubber deforms to restrict the flow rate to the pre-set setting (which is also stamped on the valve body). For larger flow rates than cannot be handled by 2” screwed valves, wafer type valves are available up to 12” (multiple control rubbers can be inserted into machined recesses in the plate)

This type of flow control device is automatic (self acting), self cleaning and maintenance free and is available in the following materials and flow ranges (refer to data sheet for all flow rates available for each valve type and size).

DR Brass & Chromed Brass (screwed)
¼”→ 2” F x F BSPP, numerous flow ranges between 0.4 LPM → 342 LPM
½” → 1” F x M or M x F BSPP, numerous flow ranges between 0.4 LPM → 114 LPM

316ss (screwed)
¼”→ 2” F x F BSPP, numerous flow ranges between 0.4 LPM → 233 LPM
¼” (F x M), ½” & 1” F x M or M x F BSPP, numerous flow ranges between 0.4 LPM → 114 LPM

PVC (screwed)
¼”→ 2” F x F BSPP, numerous flow ranges between 0.4 LPM → 342 LPM

Gunmetal or 316ss (wafer type for Table D flanges)
1”→ 12” numerous flow rates from 0.4 LPM to 8,854 LPM