Products

Pressure Maintenance/Relief Valve

China Pressure Maintenance/Relief Valve, Find details about China Flow Control Valve BS, Flow Control Valve Hydraulic from Pressure Maintenance/Relief Valve

Model NO.
ST-KZ0003
Material
Alloy
Type
Sleeve
Trademark
SHSUOTE
Transport Package
Wooden Carton/Pallet
Specification
DN50~DN250
Origin
Shanghai
Model NO.
ST-KZ0003
Material
Alloy
Type
Sleeve
Trademark
SHSUOTE
Transport Package
Wooden Carton/Pallet
Specification
DN50~DN250
Origin
Shanghai
ST-KZ003 Pressure maintenance/relief valve
 
Pressure Sustaining/Relief Valve is a hydraulically operated, pilot- controlled, modulating valve designed to maintain constant upstream pressure within close limit. This valve can be used for pressure relief, pressure sustaining, and back pressure function in a by-pass system. In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges. Operation is completely automatic and pressure settings maybe easily changed by adjusting screw on top of the pilot.

02.Main parts&material
No.PartMaterialChina stardard
1bodyductile ironQT450-10
2bonnetductile ironQT450-10
3Seat ringstainless steelZG1Cr18Ni9
4Yokeductile ironQT450-10
5Stemstainless steel20Cr13
6Springstainless steel1Cr18Ni9
7DiaphragmrubberNBR+Reinforced nylon
8Ball seatrubberNBR
9Pipe fittingbrass/stainless steelHPb59-1/0Cr18Ni9
10Pilot Relief ValvebrassHPb59-1

03.Features
001.Hydraulic control, no external driving force.
002.The main valve has only one moving part and the failure rate is low.
003.Diaphragm structure, no friction, high control sensitivity.
004.The pressure behind the valve does not change with the change of the pressure in front of the valve.
005.The pressure behind the valve does not change with the change of system flow;
006.Good static pressure reduction effect;
007.Wide range of pressure regulation after valve;

04.Dimensions
DNLØDØKHN-ØdØB
PN10PN16PN25PN10PN16PN25PN10PN16PN25PN10PN16PN25
502301651651651251251251774-Ø194-0194-019Ø99Ø99Ø99
652901851851851451451452024-Ø194-0198-019Ø118Ø118Ø118
803102002002001601601602198-Ø198-Ø198-019Ø132Ø132Ø132
1003502202202351801801902438-Ø198-Ø198-Ø23Ø156Ø156Ø156
1254002502502702102102202438-Ø198-Ø198-Ø28Ø156Ø156Ø156
1504802852853002402402503338-Ø238-Ø238-Ø28Ø211Ø211Ø211
2006003403403602952953104288-Ø2312-Ø2312-Ø28Ø266Ø266Ø274
25073040540542535035537047812-Ø2312-Ø2812-Ø31Ø319Ø319Ø330
30085046046048540041043053812-Ø2312-Ø2816-Ø31Ø370Ø370Ø389
*35098052052055546047049055016-Ø2316-Ø2816-Ø34Ø429Ø429Ø448
NOTE:
1. *DN 125/350 use same internal as DN100/300
2. AISI 304 factory standard material, consult factory for AISI 316 material

05.Execution standard
Design standardCJ/T219, JB/T10674
Connection standardGB/T17241.6
Face spacing standardGB/T12221
Inspection testing standardGB/T13927

06.Technical parameters
Nominal diameterDN50~DN250(2"~10") PN10
DN50~DN250(2"~10") PN16
DN50~DN200(2"~8") PN25
Nominal pressure0.3MPa~1.7MPa
1.7MPa~2.1MPa
Operating temperature0°C~85°C
Seal test1.1PN
Shell test1.5PN
Suitable mediumWater

07.Operating principle
The relief/holding valve is composed of the hydraulic control valve main valve and relief guide valve, controlling the opening and closing of the main valve through the opening and closing of the guide valve.
The relief guide valve is connected to the front end of the main valve through a copper pipe to sense the pressure in the front end.When the pressure at the front end is greater than the set pressure value of the valve, the pressure relief guide valve is opened and the upper chamber of the main valve is drained outward to open the pressure relief valve.When the pressure at the front end is less than the set pressure value of the valve, the pressure relief guide valve will be closed and the upper chamber of the main valve will stop draining water to the outside, so that the main valve will gradually close and achieve zero leakage.The valve setting pressure value can be adjusted through the adjusting screw on the relief guide valve.


2.Factory tour
Pressure Maintenance/Relief Valve
Pressure Maintenance/Relief Valve
Pressure Maintenance/Relief Valve
Pressure Maintenance/Relief Valve
Pressure Maintenance/Relief Valve


3.FAQ

Q1.How about your delivery time?
A. Commonly, it is 5-10 days if in enough stock. It will takes about 20-30 days after receiving the deposit, the delivery time depends on the items and the order quantity.

Q2: Are you trading company or manufacturer ?
A: We are a manufacturer of hydraulic control valve,gate valve,butterfly valve,check valve,pressure reducing valve and other valve parts for Water plant, secondary water supply, municipal pipe network, reservoir, garbage treatment plant, subway and other industries in municipal engineering;Petrochemical, steel plant, power plant, shipbuilding and paper-making, bio-pharmaceutical, etc

Q3: Can you produce according to our own drawings?
A: Yes, please send your own drawing draft to us.OEM items are welcome.
 
Q4: Do you provide samples ? is it free or extra ?
A: Yes, we'd like to offer the sample for free charge but the freight will be on your charge. 

Q5: Do you have agent or representative abroad?
 A: We don't have any agents abroad up to now. If you have interests to join us as agent and enjoy more discounts.Just feel free to contact us then we can discuss more details.
 
Q6: Can we print the LOGO on products?
A: Yes, the OEM is available with the permission of our customers.
 
Q7. what is your payment term?  
A: T/T or L/C,if you want any other way,please contact us.
 
Q8: what is your main market?
A:Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe,  North America, South America, and so on.
 
Q9: If products have some quality problem, how will you deal with?
A: We will be responsible for all the quality problems.
 
Q10: What can I get from cooperating with SUOTE VALVE?
A:  1. Special valves, with customized service.
     2. Timely production and delivery, time is money. 
     3. Market protection service, long term business strategy. 

More info pls just feel free to contact:
Shanghai Suote Valve Co., Ltd.
   
  
 
 
 

 
 
 

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