Pressure sustaining grooved valve with electric control and plastic pilot

Description

Hydraulic control valve used to maintain upstream pressure value constant. When the incorporated 3/2 solenoid receives the order for opening the valve opens only when the inlet pressure reaches a preset level by means of a three way plastic sustaining pilot incorporated. This valve controls the inlet pressure and maintains it above the preset pressure without being affected from upstream flow and pressure variations.

When upstream pressure value is lower than the preset pressure value, the valve closes completely.

Applications

Upstream pressure control.
Pump system protection against excessive demand.

Available models

2”, 3” and 4”

Dimensions / Pressure loss

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Description

References and dimensions
Product codeValveLHWKg.
892420+4993102″2031281284,5
892430+4993103″2311651728,2
892440+4993104″28320020412,4

Codes of valves with high pressure diaphragm AP, for valves with low pressure diaphragm BP, please consult. Valves with 24 VAC NO solenoid. Other voltages, please consult

Minimum working pressure
ValveLow PressureHigh Pressure
1″1/20,30,7
2″0,30,7
2″ 1/20,30,7
3″0,50,9
4″0,51,0

 

Solenoids
ConnexionsWaysFunctionOrificeBody MaterialVoltage*Wires
1/8″”3NO,NC1,2;1,6Reinforced Nylon24 VAC; 9-12 Latch2
1/8″; 1/4″3NO,NC1,2;1,6;2,0Brass24 VAC; 110 VAC; 9-12 Latch2

 

MAXIMUM PRESSURES:

Plastic Body: Protection Class IP66
FunctionOrificeACDCDC Llatch
NC1,211911
1,6656
NO1,2121212
1,6888

 

Brass Body: Protection Class IP65
FunctionPowerOrifice
1,21,62,0
NCADC201510
AC/8W DC/10W301714
AC/5,5W201510
AC/2,5W DC/5,5W DC/3,5W16109
NOADC201511
AC/8W DC/10W221712
AC/5,5W201511
AC/2,5W DC/3,5W18128

 

Head loss, fully opened valve (mca)
Flow (m3/h)
Valve5101520253035404550556065708090100125150
1″1/20,080,350,821,502,403,514,856,428,2210,25
2″0,080,350,821,502,402,804,856,428,2210,25
2″ 1/20,050,300,601,200,681,853,954,906,107,759,0010,15
3″0,040,120,250,440,500,681,311,702,132,623,153,734,355,036,518,189,0810,03
4″0,030,110,220,350,680,500,881,091,331,581,852,132,432,753,424,164,957,159,66
Bold: Advised flow rates