Jd745X Diaphragm Type Multifunctional Water Pump Control Valve

• Customization: Available
• Media: Water
• Nominal Pressure: 0.6 ~ 4.0 MPa
• Model NO.: GAJD745X
• Nominal Diameter: 50~ 1000 mm
• Structure: Diaphragm Type with Double Chamber
• Connection: RF Flanged
• Applicable Medium: Water, Oil and Other Non-Corrosive Medium
• Applicable Temperature: Below 80 Deg C
• Flange Standard: Jb/ANSI/DIN/JIS
• Test and Inspection Standard: GB/T13927 API598
• Application: Outlet of Water Pump
• Function: as a Non-Return Valve and Avoid Water Hammer
• Transport Package: Wooden Case
• Specification: CE, SGS
• Trademark: Goole, ODM, OEM
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481804090
• Production Capacity: 50000PCS/Year

Product Description

JD745X Diaphragm Type Multifunctional Water Pump Control Valve

Product Description

1. Product Introduction

The super hydraulic control valve we made can be divided into Diaphragm type and Piston type. Both are composed by a main valve, a pilot valve, matching tube, fittings and some other components. According to the different working purposes, function and places, only by changing the pipeline assembly of the pilot valve and the fittings to form a complete control system, different valves with different working performances can be resulted.

Structure Principle

2. Structure

This valve has the following two types: Diaphragm type and Piston type. Both are  composed by main valve,  regulator, pilot tube, filter, etc.
 

Specification

 3. Specifications

PN (MPa)	Shell Test(MPa)	Seat Test (MPa)	Minimum Operation Pressure (MPa)	Slow Closing Time (S)	Applicable Temp. (ºC)	Applicable Medium
1.0	1.5	1.0	0.07	3-120	0-80	Water
1.6	2.4	1.6
2.5	3.75	2.5
4.0	6.0	4.4

Product Features

4. Features & Working Performance

 4.1 Features:
  This product is Y Type Structure with Double Chamber Operator. While working, it has following advantages: Half-straight flow direction, Large flowing rate, Low Pressure loss, Steady Open and close, No Pressure Fluctuation, etc. Double Chamber Operation Apparatus can be disassembled as a whole, which is easy for inspection. Diaphragm is made of Nylon Reinforced Rubber, which makes it has long service life. Valve Disc sealing gasket can be removed, which is convenient for maintenance.
 4.2 Working Performance:
  Multifunctional Pump Control Valve can be installed in the system pipelines or the outlet of the pump. While normal working, the inlet side medium push the main valve disc lift, then the medium flows into the middle chamber through the flowing regulator, which makes the valve open quickly. When the valve stop working, the outlet side medium flows into the upper chamber through the regulator, the operator will move downwards and make the main and pilot valve disc move downwards, thus the valve can be closed quickly or slowly and avoid the backwards flowing of the medium.

Product Details

Diaphragm Type

No.		Parts Name	Material
Diaphragm Type	Piston Type
1	1	Body	CI / CS / DCI
2,13	2,14	Filter	Brass
3	3	Regulator	Brass
4	11	Stem	S.S
5	8	Diaphragm/Gland	NBR / DCI
6	11	Bonnet	CI / CS / DCI
7	9	Slow Closing Disc	S.S

Piston Type

No.		Parts Name	Material
Diaphragm Type	Piston Type
8	10	Spring	Alloy
9	4	Main Valve Disc	DCI
10	12	Seat	Brass / S.S
11		Diaphragm Seat	CI / CS / DCI
12	13	Regulator	Brass
	5	Sleeve	S.S
	6	Sleeve Seat	CI / CS / DCI
	7	Piston	DCI

 

Product Parameters

5. Main External Dimension 

DN	L	H	D				D1				n-d
			1.0 MPa	1.6 MPa	2.5 MPa	4.0 MPa	1.0 MPa	1.6 MPa	2.5 MPa	4.0 MPa	1.0 MPa	1.6 MPa	2.5 MPa	4.0 MPa
50	205	270	150	150	150	150	110	110	110	110	4-17.5	4-17.5	4-18	4-18
65	209	270	165	165	165	165	125	125	125	125	4-17.5	4-17.5	4-18	4-18
80	240	340	185	185	185	185	145	145	145	145	4-17.5	4-17.5	4-18	8-18
100	292	400	200	200	200	200	160	160	160	160	4-18	8-18	8-18	8-18
125	330	440	220	220	235	235	180	180	190	190	8-18	8-18	8-22	8-22
150	370	500	285	285	300	300	240	20	250	250	8-23	8-23	8-26	8-26
200	450	640	340	340	360	375	295	295	310	320	8-23	8-23	12-26	12-30
250	500	690	395	405	425	450	350	355	370	385	12-23	12-26	12-30	12-33
300	600	820	455	460	485	515	400	410	430	450	12-23	12-26	16-30	16-33
350	650	950	505	520	555	580	460	470	490	510	16-23	16-26	16-33	2+-36
400	700	1400	565	580	620	660	515	525	550	585	16-26	16-30	16-36	16-39
450	780	1580	615	640	670	685	565	585	600	610	20-26	20-30	20-36	20-39
500	800	1600	670	715	730	755	620	650	660	670	20-26	20-33	20-36	20-42
600	930	1815	780	840	845	890	725	70	770	795	20-30	20-36	20-39	20-48
700	1030	2040	895	910	960		840	840	875		24-30	24-36	24-42
800	1100	2350	1015	1025	1085		950	950	990		24-34	24-35	24-48
900	1200	2606	1115	1125	1185		1050	1050	1090		28-34	28-39	28-48
1000	1300	2765	1230	1255	1320		1160	1170	1210		28-36	28-42	28-56

Notification

6. Assemble Notification

 6.1 The best assemble direction of the multifunctional pump control valve is horizontal assembling.(i.e. the Bonnet is upwards)
 6.2 Check the medium flowing direction before assembling so as to avoid wrongly assembling.
 6.3 Clean the pipelines before assembling and a strainer needs to be applied in front of the valve, which will avoid the impurity affect the working performance and will prevent the damage of the product.
 6.4 If the working temperature is below 0, heat insulation materials need to be used.
 6.5 There must be enough space to assemble the Multifunctional Pump Control Valve. And the control valve needs to applied behind the check valve. The details can be referenced the assembling drawing.
 
7. Notifications

 7.1 Check the condition of the pilot valve, matching pipes and fittings before operation.
 7.2 Check if the regulator on the pilot valve and matching pipes can work flexibly.
 7.3 Maintain the pipelines after operating the system for some time.
 
8. Testing Methods

 8.1 Open the globe valve 3,12 ( 3, 13 of the Piston type.)
 8.2 Let the pump start working and check if the inlet and outlet pressure is normal.
 8.3 Let the pump stop working and check if there is water hammer and if the pump act reversely.
 8.4 If the water hammer is big, then need to open less of the globe valve.
 8.5 If the pump acts reversely, then need to open more of the globe valve
 
9 Malfunction maintenance

Problem	Inspection Item	Inspection Methods	Maintenance methods
Main valve can't open	1. Pressure is too low	Check if the pressure is low	Strengthen the pressure
	2. Adjusting stem is out		insert the adjusting stem
	3. Globe Valve closed		Open the globe valve
	4. Pipelines blocked	Lower pipelines	Remove the blocks
Main valve can't be closed tightly	1. Diaphragm or O-ring is damaged	Open the bonnet and take out the damaged diaphragm or piston	Change the diaphragm or O-ring
	2. Piston is too tight		Downwards the adjusting stem, and then return it when the piston can move flexibly
	3 Globe valve closed		Open the globe valve
	4. Backwards water pressure is too low	Check the water pressure	Strengthen the pressure

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