Low Temperature O2 N2 Safety Release Valve
Products Description
Item | Parts name | Function |
| 1 | Valve body | Main pressure-containing parts |
| 2 | Seat | Quality pressure-bearing part, main sealing part |
| 3 | adjust Ring | Adjust reseating pressure, relieving pressure and opening height. |
| 4 | Backlash plate | When medium discharge, it act reaction force, improve disc lift force |
| 5 | Spring | The main parts of safety valve pressure adjusting |
| 6 | adjust screw | Adjust set pressure |
| 7 | locking nut | To prevent the screw loose |
| 8 | Rod | Transfer the spring force to disc or backlash plate |
| 9 | lever | Manuel relief |
| 10 | bonnet | Connecting parts, spring cavity, enclosed safety valve pressure-bearing part |
| 11 | spring set | Spring supporter |
| 12 | radiator | high temperature valve, lower spring cavity temp. |
| 13 | guide sleeve | Guide and locate valve disc |
| 14 | disc | Opening, sealing main parts |
| 15 | set screw | Prevent adjusting ring loose. |
Spring type safety relief valve works through adjusting spring force to prevent medium pressure and realize sealing purpose. Under the condition of spring force greater than medium's normal pressure, valve disc is at the close state, when medium pressure exceeds the set pressure, the spring is compressed, and lead the disc sealing faces separated, the valve open automatically, and relief pressure; When medium pressure reduced to normal pressure, the valve disc go back to valve seat under the spring force, disc sealing faces and valve seat sealed again, the valves close automatically.
Sealing face's accuracy and cleanness of Valve disc and valve seat direct related to valve's tightness.
In the range of spring pressure, the valve set pressure can be changed by rotating the adjust screw.
Change the seal pressure relief angle and lifting force by rotating the adjust ring to achieve suitable reseating pressure, relief pressure and disc's open height. Low temperature safety valve
Low temperature valves are widely used in medium Natural gas, liquefied gas, liquid oxygen, liquid ammonia, liquid hydrogen and liquid nitrogen in -29º C~-196 º C
Valve material selection: LCB, 304, 316, Monel etc.; Spring type is decided by medium. All valve parts are at -196 º C subzero treatment for 24hours.
Low temperature safety valves are installed on low temperature, ultra-low temperature equipment and storage tank, tanker; The valve is low temperature resistant, good sealing, reliable and open sensitive, assured the cryogenic equipment safety work. If the medium is toxic or inflammable, choose the bellows valves.
Safety reflux valve (return valve; Reverse flow valve)
Usage
Reflux valves install at the liquid reflux pipe of LPG tank pump outlet. When the front pump pressure greater than rated value, safety reflux valve reduce pressure & back flow.
Structure
Safety reflux valve include flange parallel type (picture 4) and right-angle type (picture 2). Disc sealing material is PTFE (picture 5), good sealability. Valve open and close function is realized by the inlet and outlet different pressure.
Working principle
When inlet pressure is greater than outlet pressure of 0.5MPa, spring is compressed, and valve open automatically. When inlet pressure is less than outlet pressure of 0.5MPa, the valve get closed automatically by spring moving.
Vacuum negative pressure safety valve
Main application
Vacuum negative pressure safety valve is mainly used in negative pressure system.
Safety valve model selection
Working pressure and medium temperature decide valve's temperature range and nominal pressure; Valves set pressure which define the spring pressure class, medium type and working temperature decide the valve material and structure; Safety valves relieving capacity decide the valve's orifice area
Company Information:1. CYY Energy is professional instruments, semi trailer, cylinder, storage tank, pump, air separation plant, LNG plant, cryogenic storage system and gas relevant equipments supplier. We provide the best service obsess over customer's demand. We believe our purpose is to create value for the customer. CYY Energy has advanced technical design ability, mature project management system, consummate and close-in after-sales service. Our production is widely used in steel, metallurgy, oil, chemical industry, machinery, environmental protection, electronic industry, medicine etc. So far, we have successfully delivered our equipments to all around the China, South-East Asia, Middle East, South America and Latin America. We have fostered a good company image all around the world.
2. Our products including CNG steel cylinder for vehicle, High pressure seamless steel gas cylinders, Fire-fighting cylinders, Accumulator shell and other cylinder products. The high pressure seamless steel gas cylinder can produced according to the standard such as ISO11439, ISO9809, JIS B8241, NZS5454, EN1964, DOT3AA, IS7285,GB17258,GB5099 and so on. CYY's products serve a wide application in automotive, chemical industries, firefighting, petro industries, energy, metallurgy, electronics, aerospace, nuclear energy and scientific research institute.
3. CYY has equipped with most advanced two pipe production lines with strongly technology, advance equipment and complete means on inspection. Our company can produce the max outside diameter of the pipe is 406mm. the annually capacity of CYY can be more than 350,000 cylinders and it will reach more than 1,000,000 cylinders after the new five production lines have been finished
4. CYY production and management are carried out by ISO9000 Quality Management System strictly and keep a good quality.
5. There are various kinds of gas cylinders for your choice and we can also design and manufacture any new type gas cylinder according to customers' requirement.
CYY Mission:Supply the best Cryogenic Equipment and the relative services according to the customer's needs In the global market, which create famous brand for customers and keep the healthy development of the company and value added.