Diaphragm multi-function pump control valve-Shen Gao Valve Group Co., LTD

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Diaphragm multi-function pump control valve

Model: JD745X
Nominal diameter: DN40 ~ 1600mm
Nominal pressure: PN1.0 ~ 2.5MPa
Suitable medium: water, oil, water, sewage
Temperature: 0 ~ 80 ℃
Flange Standard: GB / T17241.6, GB / T9113
Test standards: GB / T13927, API598

First, the multi-function pump control valve Structural features
Multi-function pump control valve by the main valve and control valve and take over the system, the valve body with a DC valve, the main valve control chamber for the diaphragm or piston double control room structure, Control room than the general increase of a hydraulic control valve, an increase of the main valve control functions, to achieve a slow opening of the pump outlet, fully open, slow closing, cut-off and other multi-functional control, a valve, a regulation of the pump Multi-outlet control.
The product takes over the control system using the valve control, by setting the opening of the control valve can be easily achieved the need for various control parameters, such as the opening of the main valve speed, slow closing speed and so on.

Second, the principle of multi-function pump control valve
When the pump starts, the pressure acting on the main valve plate below the control room and the lower chamber, the pressure to open the main valve, the control room after the water chamber slowly through the control valve B To the outlet, the main valve slowly open. Setting the opening of the control valve results in a proper main valve opening speed. When the pump stops working, the water pressure at the inlet decreases rapidly, most of the opening is quickly closed under dead weight and spring pressure to prevent the water from flowing back. The remaining opening degree is controlled by the combination of the water pressure in the upper chamber and the water pressure in the lower chamber Slowly shut down, slow down the closure of the formation of a buffer to prevent the pressure surge.
Set the control valve A, B opening and opening ratio can be a suitable valve opening and closing speed.

Third, the multi-function pump control valve working characteristics
1, to prevent the water hammer effect is good, the slow open, check the closure speed, slow closing, etc. to eliminate water hammer technology integration, to prevent the pump does not hammer and stop the pump back and water hammer Water supply pipe and pump damage.
2, easy to operate, no need to reprovision the valve with electronic control system, the valve with the pump to open and stop automatically and in order to complete the control function. By setting the valve opening degree can get the appropriate control parameters.
3, the valve body with a full channel, DC, streamlined design. Small hydraulic loss, energy-saving effect.

four,Multifunctional pump control valve function and purpose
The valve is installed at the pump outlet, the order to achieve a slow opening, full open, closed fast, slow closure and other functions.
This product is used in high-rise building water supply system and other water supply system of the pump outlet pipeline, to prevent and reduce the water hammer on the pipeline when the water hammer start and stop to prevent water back to protect the pump to maintain pipeline safety.

Five, multi-function pump control valve main technical parameters

Nominal pressure (Mpa)	Shell test pressure (MPa)	Seal test pressure (MPa)	Regulating range (MPa)	Slow closing time (S)	Minimum working pressure (MPa)	Suitable media	Medium temperature (℃)
1.0	1.5	1.1	0.09-0.8	3-60 (adjustable)	≥0.07	water	0-80

Sixth, multi-function pump control valve main parts and materials

Part Name	Parts and materials
Body valve cover	WCB
Valve seat disc	Copper alloy / 2Cr13
O-ring seals	Nitrile rubber
Valve stem	2Cr13
spring	50CrVA
Cylinder piston (piston type)	2Cr13
Diaphragm (diaphragm type)	Cloth fabric nitrile rubber
Regulating valve ball valve	Copper alloy
filter	stainless steel

Seven, multi-function pump control valve parts list:
1, the main valve 2, the flow control valve 3, the filter

Eight, multi-function pump control valve connection size

DN	L	H	D (mm)			D1 (mm)			b (mm)			D2 (mm)			n-Φd
DN	mm	mm	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6	PN2.5
40	240	270	150	150	150	110	110	110	18	18	18	88	88	84	4-17.5	4-17.5	4-18
50	240	270	165	165	165	125	125	125	20	20	20	102	102	99	4-17.5	4-17.5	4-18
65	270	340	185	185	185	145	145	145	20	20	22	122	122	118	4-17.5	4-17.5	8-18
80	300	400	200	200	200	160	160	160	22	22	24	133	133	132	8-17.5	8-17.5	8-18
100	350	440	220	220	235	180	180	190	24	24	24	158	158	156	8-17.5	8-17.5	8-22
125	400	460	250	250	270	210	210	220	26	26	26	184	184	184	8-17.5	8-17.5	8-26
150	480	500	285	285	300	240	240	250	26	26	28	212	212	211	8-22	8-22	8-26
200	500	640	340	340	360	295	295	310	28	30	30	268	268	274	8-22	12-22	12-26
250	605	690	395	405	425	350	355	370	28	32	32	320	320	330	12-22	12-26	12-30
300	700	820	445	460	485	400	410	430	28	32	34	370	370	389	12-22	12-26	16-30
350	800	950	505	520	555	460	470	490	30	36	38	430	430	448	16-22	16-26	16-33
400	900	1400	565	580	620	515	525	550	32	38	40	482	482	503	16-26	16-30	16-36
450	1000	1580	615	640	670	565	585	600	32	40	42	532	550	548	20-26	20-30	20-36
500	1100	1600	670	715	730	620	650	660	34	42	44	585	585	609	20-26	20-33	20-36
600	1300	1815	780	840	845	725	770	770	36	48	46	685	685	720	20-30	20-36	20-39
700	1400	2040	895	910	960	840	840	845	40	54	50	800	800	820	24-30	24-36	24-42
800	1500	2350	1015	1025	1085	950	950	990	44	58	54	905	905	925	24-33	24-39	24-48
900	1700	2606	1115	1125	1185	1050	1050	1090	46	62	58	1005	1005	1028	28-33	28-39	28-48
1000	1900	2765	1230	1255	1320	1160	1170	1210	50	66	62	1110	1110	1140	28-36	28-42	28-56
1200	2050	2950	1455	1485	1530	1380	1390	1420	56	52	70	1330	1328	1350	32-39	32-48	32-55
1400	2200	3180	1675	1685	1755	1590	1590	1640	62	58	76	1530	1530	1560	36-42	36-48	36-60
1600	2400	3400	1915	1930	1955	1820	1820	1860	68	64	84	1750	1750	1780	40-48	40-55	40-60

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