Pressure sustaining threaded valve with plastic pilot

Description

Hydraulic control valve used to maintain upstream pressure value constant. The valve opens when the
inlet pressure reaches a preset level by means of a three way plastic reducing pilot incorporated. This valve controls the inlet pressure and maintains it constant 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

1 ½”, 2”, 2 ½”, 3” and 4” BSP (NPT optional)

Dimensions / Pressure loss

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Description

References and dimensions
Product code	Valve	L	H	W	Kg.
892315+499012	1″1/2	180	128	128	4,7
892320+499012	2″	180	128	128	4,5
892325+499012	2″1/2	230	135	128	5,4
892330+499012	3″	240	165	172	8,2
892340+499012	4″	295	200	204	12,4

(Codes of valves with high pressure diaphragm AP, for valves with low pressure diaphragm BP please consult.)

Minimum working pressure
Valve	Low Pressure	High Pressure
1″1/2	0,3	0,7
2″	0,3	0,7
2″ 1/2	0,3	0,7
3″	0,5	0,9
4″	0,5	1,0

Head loss, fully opened valve (mca)
	Flow (m³/h)
Valve	5	10	15	20	25	30	35	40	45	50	55	60	65	70	80	90	100	125	150
1″1/2	0,08	0,35	0,82	1,50	2,40	3,51	4,85	6,42	8,22	10,25
2″	0,08	0,35	0,82	1,50	2,40	2,80	4,85	6,42	8,22	10,25
2″ 1/2	0,05	0,30	0,60	1,20	0,68	1,85	3,95	4,90	6,10	7,75	9,00	10,15
3″	0,04	0,12	0,25	0,44	0,50	0,68	1,31	1,70	2,13	2,62	3,15	3,73	4,35	5,03	6,51	8,18	9,08	10,03
4″	0,03	0,11	0,22	0,35	0,68	0,50	0,88	1,09	1,33	1,58	1,85	2,13	2,43	2,75	3,42	4,16	4,95	7,15	9,66
Bold: Advised flow rates