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antic pressure safety valve sustaining surge water pipe

Antic pressure safety valve sustaining surge water pipe

Connection Ends
Flange to BS EN 1092-2:1997
Temperature Range
0℃- 80℃
Coating
Fusion Bonded Epoxy Coating in accordance with ANSI/AWWA C550
Working Pressure
PN10/PN16
Price
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Enterprise Strength
  • Mike Valve always keeps in mind the principle that 'there are no small problems of customers'. We are committed to providing quality and considerate services for customers.
Company Advantages
1. Mech Valve pressure safety valve has passed prescribed tests before delivery. These tests cover appliance characteristics, energy efficiency, energy consumption, and electrical safety.
2. The product is not likely to wrinkle. It has been processed with an anti-crease finishing agent to increase the fibers' elasticity and crease recovery performance.
3. Some of our customers say it is reliable in dissipating thermal energy. They can even feel the continuous heat air flow across its fins.
4. The product only consumes a little power energy with high water use efficiency. People say the operating cost of this product is much lower than the desalination equipment.
Statement


SK730X Pressure Relief & Sustaining Valve is a diaphragm type of hydraulic control valve driven by the hydraulic pressure within the piping system. One prominent feature of the valve is, it can serve as pressure relief valve and sustaining valve at the same time. As pressure relief valve, it releases the high pressure before the valve out of the piping system for protection of the pipes and the equipments when the pressure exceeds its pre-set value; As pressure sustaining valve, it maintains the water pressure above certain set value for guarantee of water supply to upstream area.

Features


Operational principle

antic pressure safety valve sustaining surge water pipe-1

SK730X Pressure Relief & Sustaining Valve is controlled by pressure relief/sustaining pilot valve and equipped with pressure relief/sustaining pilot valve, needle valve, mini strainer and ball valve, etc.

As Pressure relief valve, the valve is connected with branch pipe and directed to lower pressure area or drainage ditch. In normal working conditions, water flow enters the upper cavity room (2) through needle valve (1). When the pressure before the pilot valve (3) is lower than its pre-set value A, the pilot valve will remain closed and the water that enters the upper cavity room drives the membrane down and closes the disc and the basic valve. The pilot valve opens when the pressure before the valve exceeds its pre-set value and the pressure accumulated in the upper cavity room gets released. Under the pressure from the inlet opening, the disc of the basic valve opens. In this way the pressure within the piping system will be maintained under the pre-set value A.

As pressure sustaining valve, the valve is connected in series with the main pipe and serves to maintain the pressure before valve above the set value B. Under normal conditions, water flow comes continuously from the inlet opening to the upper cavity room (2) of the basic valve through the needle valve (1); When the pressure before the pilot valve (3) is lower than its pre-set value, the pilot valve will remain closed and the water that enters the upper cavity room drives the membrane down and closes the disc and the basic valve for accumulation of pressure till equals to the set value B. The pilot valve opens when the pressure before the valve exceeds its pre-set value and the pressure accumulated in the upper cavity room gets released. Under the pressure from the inlet opening, the disc of the basic valve opens to allow water flow. In this way the pressure within the piping system will be maintained under the pre-set value B.


Property and advantages

• Driven by pressure of pipe system, work automatically with energy of pipe system to achieve energy conservation and environment protection.

• Controlled by the pilot valve, lower energy consumption, achieve accurate pressure reducing results, have function of stabilizing pressure after the valve.

• Dual cavity design, with functions of fully opening and fully closing. Slow shut causes no pressure fluctuation, and the diaphragm with support is well protected.

• Have internal orifice, connect bottom cavity and outlet of the basic valve, make sure stability of reaction to keep stability of pressure after the valve, avoid any vibration and noise.

• Channel with straight-flow, slight friction loss, no eddy flow and turbulent flow, cut down the damage of cavitation.

• Long pitch orientation design for stem move, stable and no gap resistance.

• Balanced automatically, big gap design on connection of disc and stem, disc is free on the vertical flat against stem, it can balance the tolerance from machining and sealing surface. Good connection without leakage. Achieve functions of both reducing dynamic pressure and reducing static pressure.

• Ductile iron castings with nodularity higher than 90%, foundry in house with advanced melting technology and strict quality control system, testing reports and testing bars can be supplied with order. Records and testing bars maintained for one year in the factory.

• Good corrosion resistance, with stainless steel, copper alloy, rubber made from DuPont and other rust- resisting material, fusion bonded epoxy coating both for interior and exterior surface of the basic valve. All the characteristics in accordance with ANSI/AWWA C550 and other international specifications like WRAS, NSF61.


antic pressure safety valve sustaining surge water pipe-2
SK730X


Notes for installation and debugging

• All the Pressure Reducing Valves have been finished initial debugging tests before delivery. Further dubugging test is also suggested during using according to different working conditions. After the pipe system becomes stable, please loose the adjusting screw on the top of pilot valve to the top- most position.

After the pipe system becomes stable, please loose the lock nut under adjusting screw, open the ball valve or needle valve (1) slightly, when pressurize, adjust the adjust screw on pressure relief pilot valve and fasten the lock nut when it achieves pressure required. Pay attention that when adjust pressure relief pilot valve, clockwise is for increasing pressure and anti-clockwise is for reducing pressure.



Basic Parameters



Pressure

Symbol

Unit

Norminal Pressure

 

 

 

PN10

PN16

PN25

 Set Pressure

Ps

MPa

 ≤0.83

≤1.33

≤1.7

Set Pressure Difference

 

 

Ps<0.5: ±0.014 MPa; Ps≥0.5: ±3%Ps

Open/Close Pressure Difference

 ΔPb

 

 Ps<0.3: 0.06MPa; Ps≥0.3: 20%Ps

Discharge pressure

 Pd

 

 ≤1.2Ps


Typical installation illustration


antic pressure safety valve sustaining surge water pipe-3

Common problems and proposed solutions


Common Problems

Proposed Solutions

 

The pressure of pipe system is lower than set-pressure, the valve dose not close.

a.Check if any sundries on the sealing surface of basic valve or pilot valve.

b.Check if any damage on the sealing surface of basic valve or pilot valve.

c.Check if any damage or fatigue on spring of basic valve or pilot valve.

d.Check if any damage or fatigue on diaphragm of basic valve or pilot valve.

The pressure of pipe system is higher than set-pressure, the valve dose not open.

1.Check if ball valve (4) is closed, if yes, please open it.

2.Check if any blocks in basic valve or on stem of pilot valve, if yes, please remove the block or change new stem.

3.Check if lock nut and adjust screw were adjusted wrongly, please try to repeat all the actions.


Company Features
1. Shenzhen Mech Valve Trading Co., Ltd.'s sales volume keeps rising year by year.
2. Our factories have highly specialized and dedicated professionals who have 5 to 25 years of experience in their respective fields of expertise.
3. Our company values are "passion, responsibility, innovation, determination, and excellence." By living up to these values, and bringing them into our day-to-day work, we achieve our ultimate aim of satisfying our customers. Our company is socially responsible for our performance. For example, our overall goal is to achieve the lowest potential CO2 emission. We follow ethical and legal business practices. Our company supports our volunteer efforts and provides charitable contributions so that we can actively participate in the civic, cultural, environmental and governmental affairs of our society.
Every Mech is professionally designed by our experienced design team. With a strong light penetration ability, this product guarantees a safe drive
When designing Mech , the design team invests plenty of time in market research and designs a product that is more superior than others. The product comes in various light colors
Premium raw materials: Mech is made of high quality raw materials. They are supplied by our reliable partners who have signed contracts and established cooperation relationship with us for over years. With a low output voltage, it's safe to use
Mech shows the outstanding performance, after years of improvement in the production process. The production process is managed in an efficient manner and therefore this product is produced at a quick rate. The product comes in various light colors
Excellent craftsmanship: Mech is crafted with excellent craftsmanship which is a result of talents and skills. Its superior craftsmanship makes it high quality. Thanks to built-in its heat dissipation device, the product features high conversion efficiency
The product is very durable. Made of hard materials, it is less likely to be affected or destroyed by any surrounding element. This product can illuminate in every direction with a steady 360-degree viewing angle
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