OVERVIEW 1. Pressure-Sustaining-Reducing valve - RS Ensures that the upstream pressure does not fall below the pre-set pressure, as well as safeguarding against the downstream exceeding the required pressure. Basic, double-chambered, hydraulic valve with multi-directional ball valve, a 3-way, C pilot, model A, and a 3-way C pilot, Model B. Normally closed (N.C) or normally open (N.O). Also ensures steady regulation at low flow rates including zero flows, without need for a by-pass. Precise regulation (maximum deviation of 0.7 psi /0.5 m). High regulation ratios (see table in the Technical Data sheet). Wide range of flow rates (see table in the Technical Data sheet). Remote control possible (Hydraulic or electric). A 2" pressure relief valve must be installed after the valve to safeguard against line failures (e.g. stones). An air relief valve must be installed after the valve and care taken to vent the air from the line for stable functioning of the system. An orifice can be installed in the groove coupling for operation at high regulation ratios. For guidance, call our Applications Department. Three pressure ranges are available: low tension spring (0-20 psi/0-1.5 bar), medium (standard) tension spring (7 psi / 0.5 to 220 psi / 16 bar), and high tension spring (20-340 psi/1.5 to 24 bar). 2. Pressure-Reducing valve with Flow Rate Regulation - RF Maintains a pre-set downstream pressure while limiting the flow rate to the required value. Basic hydraulic double-chambered valve, with multi-directional ball valve, 3-way Model A, C-pilot, and a 3-way Model D, C-pilot, and orifice upstream or downstream of the valve. Normally closed (N.C). It is recommended to install the orifice about 20" / 0.5 m before the valve so as to prevent fluctuations in the downstream pressure. Steady regulation also at low flow rates, including zero flow, without need for a by-pass. Accurate pressure regulation (maximum deviation of 0.7 psi / 0.5 m). Precise flow rate regulation with maximum deviation of 4.4 GPM/ 1m3/hr. High regulation ratios (see table in Technical Data sheet). Wide range of flow rates (see table in Technical Data sheet). It is recommended to install an external control filter, in addition to the existing flushing in-line filter, which is an integral component of M1 valves. Remote control (hydraulic or electric) possible. Install a 2" pressure relief valve after the valve to guard against line failures (e.g. stones). Install an air relief valve after the valve and take care to vent the air from the line for stable functioning of the system. Three pressure ranges are available: low tension spring (0-20 psi/0-1.5 bar), medium (standard) tension spring (7-220 psi / 0.5 to 16 bar), and high tension spring (20-340 psi / 1.5 to 24 bar). 3. Pressure-Sustaining valve with Flow Rate Limiting -SF Maintains upstream pressure while limiting the flow rate to below the required value. Basic hydraulic double-chambered valve, with multi-directional ball valve, 3-way C-pilot, Model B, and a 3-way C-pilot Model D and orifice downstream of the valve. Normally closed (N.C). Stable regulation also at low flow rates, including zero flow, without need for a by-pass. Accurate pressure regulation (maximum deviation of 0.7 psi / 0.5 m). Precise flow rate regulation maximum deviation of 4.4 GPM / 1m3/hr. High regulation rates (see table in Technical Data sheet). Wide range of flow rates (see table in Technical Data sheet). It is recommended to install an external control filter, in addition to the existing flushing in-line filter, an integral component of M1 valves Remote control (hydraulic or electric) possible. Three pressure ranges are available: low tension spring (0-20 PSI/0-1.5 bar), medium (standard) tension spring (7-220 PSI / 0.5 to 16 bar), and high-tension spring (20-340 PSI/1.5 to 24 bar). 4. Pressure-Sustaining-Float Valve (Two-level) - SV Maintains upstream pressure while filling or emptying the reservoir to between the required levels. Basic, double-chambered, hydraulic valve with multi-directional ball valve, a C pilot, and 4-way float valve. Normally closed (N.C) or normally open (N.O) valve. For N.C control, two 6-mm tubes are required, one for control from the pilot to the valve, the other for control from the float valve to the reservoir valve. For N.O control, three 6-mm tubes are required, one for control from the pilot to the valve, the second for control from the float valve to the reservoir valve, and the third to feed the valve. The N.C valve on an increase in the reservoir water level vents the control tubes and the valve closes; on the drop of the float, the float pressurizes the control tubes and opens the valve in accordance with the pressure-sustaining pilot. The N.O valve on an increase in the reservoir water level pressurizes the control tubes and the valve closes; on the drop of the float, the float vents the control tubes and opens the valve according to the pressure-sustaining pilot. Wide range of flow rates (See table in Technical Data sheet). A stilling device should be installed around the float to restrain the wave effects. An external pilot filter should be installed, in addition to the existing flushing in-line strainer, which is an integral component of all M1 valves. Remote control (hydraulic or electric) possible. In installations where the downstream pressure is low, it is recommended to install an orifice in the Quikcoup coupling downstream of the valve to maintain a positive valve pressure. The closure can be restrained. 5. Pressure-Sustaining Float Valve (Pre-set Level) - SV Maintains the upstream pressure while filling or emptying the reservoir to its pre-set level. Basic, hydraulic, double-chambered valve, with multi-directional ball valve, C-pilot, Model B, restrictor or needle valve and 2-way plastic or metal float. Normally open (N.O). A tube is required to control the pressure from the pilot to the float. When the reservoir water level rises, the float reduces the passage, the pressure in the control tube rises, and the valve closes; when the float drops, the valve vents the control tube and opens the valve according to the pressure sustaining pilot. Wide range of flow rates (see table in Technical Data sheet). A stilling device should be installed around the float to restrain the wave effects. An external control strainer should be installed, in addition to the existing flushing in-line straining, which is an integral component of M1 valves. Remote control (hydraulic or electric) possible. In installations with low downstream pressures, it is recommended to install an orifice in the Quikcoup coupling downstream of the valve to maintain a positive valve pressure. 6. Pressure-Sustaining Pump Valve (Booster) - BS The valve maintains a minimum pressure at the pump outlet and fully opens when the line fills up; this prevents the pump from operating at low pressure during the filling of the line. When the supply voltage fails, the valve closes immediately and prevents return flows. Basic, hydraulic, double-chambered valve, with multi-directional ball valve, C-pilot, and 2 solenoids. Wide range of flow rates (see table in Technical Data sheet). A signal causes the valve to operate as a pressure-sustaining valve; when the pressure increases above the pre-set pressure, the valve opens fully. Voltage cutout results in valve closure. Operating voltage: according to solenoid specs. For typical installation, see Installation of pressure-sustaining valves.

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 | The Valve |  | on-off valves |  | P. Reducing valves |  | P. Sustaining valves |  | P. Relief valves |  | Flow Control valves |  | Pump valves |  | Reservoir valves |  | Combined Applications |  |  Description  |   | Cvalves Specifications |   | Designer working Frame |   | Valve Icons |   | Technical Data |   | Connections Devices |   | On-Off valves |   | Pressure Reducing valves |   | Pressure Sustaining valves |   | Pressure Relief valves |   | Flow Control valves |   | Flow Control valves |   | Reservoir valves |   | Combined Applications |