Pump Control Valves

700X Features

700X pump control valve is installed at the pump's outlet in high building and other feeding system to prevent fluid flowing backwards. Before the pump stops, the valve closes 90% or so ahead to prevent water hammering and water hitting at the pump's instant stop; after the pump completely stops, the valve closes fully to prevent fluid flowing backwards at the outlet of the pump to protect the pump and prevent it from turning backwards due to backward flow of the fluid. This is necessary protection equipment for the pump. It is flow-line designed and it can open or close to electric-magnetic valve's pilot. It is safe to use and it is easy to install and to maintain this kind of valve.

1. Needle Valve 2. Check Valve 3. Stroke Switch 4. Solenoid Valve 5. Check Valve

JD745X Features

JD745X pump control valve is mounted on the water pumps outlet pipeline of the high buildings and other water supply systems to prevent of the mediums back-flow and the water hammer and water shock.
JD745X pump control valve has good effect of water hammer removal. Integrating the technical principles of water hammer removal by means of slow open, quick close and slow close, so as to prevent of the water hammers at both pump start and stop.
Easy operation. The valve will open or close automatically as per the operation procedures of the pump, once operates the On-Off button of the pumps motor.
Good effect of energy saving. The valve body is designed as full-path straight-flow type, resulting in small pressure loss, big flow, small volume and light weight.

Diaphragm actuated
1. Strainer 2. Small Ball Valve 3. Strainer 4. Small Ball Valve

Piston actuated
1. Strainer 2. Small Ball Valve 3. Strainer 4. Small Ball Valve

Technical Parameters

Nominal Pressure: 1.0, 1.6, 2.5MPa
Shell test pressure: 1.5, 2.4, 3.75MPa
Sealed test pressure : 1.1, 1.76, 2.75MPa
Suitable temperature: 80
Suitable medium: water, Sewage

Materials

No.	Part	Material
1	Plug	Alloy Bronze
2	Body	Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
3	Seat	2Cr13 / SS 304 / SS 316
4	O-Ring	NBR
5	O-Ring	NBR
6	O-Ring Retainer	Cast Iron
7	Stem	2Cr13 / SS 304 / SS 316
8	Disc	Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
9	Diaphragm	Rubber
10	Diaphragm washer	Cast Iron
11	Nut	Alloy Bronze
12	Ball valve	Alloy Bronze
13	Spring	Stainless steel
14	Cover	Cast Iron (GG25, HT200) / Ductile Iron (GG40, QT)
15	Pilot socket	Alloy Bronze
16	Solenoid valve	Alloy Bronze
17	One-way valve	Alloy Bronze
18	On/Off
19	Yoke	Steel
20	Limitation piece	Alloy Bronze
21	Plug	Alloy Bronze
22	Metering	2Cr13
23	One-way valve	Alloy Bronze
24	Needle Valve	Alloy Bronze
25	Nut	Steel
26	Screw	Steel
27	Ball valve	Alloy Bronze
28	Pressure Gauge
29	Connection Pipe	Alloy Bronze

Dimensions

700X

DNmm		20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700	800
L		180	180	180	203	203	235	280	360	400	455	585	650	800	860	915	980	1075	1230	1300	1450
PN10	D	105	115	135	145	160	180	195	215	245	280	335	390	440	500	565	615	670	780	895	1010
	D1	75	85	100	110	125	145	160	180	210	240	295	350	400	460	515	565	620	725	840	950
PN16	D	105	115	135	145	160	180	195	215	245	280	335	405	460	520	580	640	705	840	910	1020
	D1	75	85	100	110	125	145	160	180	210	240	295	355	410	470	525	585	650	770	840	950
PN25	D	105	110	135	145	160	180	195	230	270	300	360	425	485	550	610	660	730	840	955	1070
	D1	75	85	100	110	125	145	160	190	220	250	310	370	430	490	550	600	660	770	875	990
H		342	342	342	395	395	405	430	510	560	585	675	730	760	840	910	1070	1135	1270	1460	1640
H1		247	247	247	278	278	298	313	350	365	420	450	470	490	526	570	610	665	725	865	975

JD745X

DN	L	D			D1			n-d			H
		1.0Mpa	1.6 (Mpa	2.5 Mpa	1.0Mpa	1.6 Mpa	2.5 Mpa	1.0Mpa	1.6 Mpa	2.5 Mpa
50	205	165	165	165	125	125	125	4-18	4-18	4-18	293
65	216	185	185	185	145	145	145	4-18	4-18	8-18	328
80	250	200	200	200	160	160	160	8-18	8-18	8-18	364
100	320	220	220	235	180	180	190	8-18	8-18	8-22	418
125	365	250	250	270	210	210	220	8-18	8-18	8-22	481
150	415	285	285	300	240	240	250	8-22	8-22	8-26	543
200	500	340	340	360	295	295	310	8-22	12-22	12-26	673
250	605	395	405	425	350	355	370	12-22	12-26	12-26	792
300	698	445	460	485	400	410	430	12-22	12-26	12-30	927
350	787	505	520	555	460	470	490	16-22	16-26	16-30	957
400	914	565	580	620	515	525	550	16-26	16-30	16-33	1188
450	978	615	640	670	565	585	600	20-26	20-30	16-36	1218
500	978	670	715	730	620	650	660	20-26	20-33	20-36	1256
600	1150	780	840	845	725	770	770	20-30	20-36	20-39	1600
700	1300	895	910	960	840	840	875	2430	24-36	24-42	1750
800	1450	1015	1025	1085	950	950	990	2433	24-39	24-48	1900

Typical Installation

700X

J745X