Contact me! Get more product information.

en English▼
X
af Afrikaanssq Albanianam Amharicar Arabichy Armenianaz Azerbaijanieu Basquebe Belarusianbn Bengalibs Bosnianbg Bulgarianca Catalanceb Cebuanony Chichewazh-CN Chinese (Simplified)zh-TW Chinese (Traditional)co Corsicanhr Croatiancs Czechda Danishnl Dutchen Englisheo Esperantoet Estoniantl Filipinofi Finnishfr Frenchfy Frisiangl Galicianka Georgiande Germanel Greekgu Gujaratiht Haitian Creoleha Hausahaw Hawaiianiw Hebrewhi Hindihmn Hmonghu Hungarianis Icelandicig Igboid Indonesianga Irishit Italianja Japanesejw Javanesekn Kannadakk Kazakhkm Khmerko Koreanku Kurdish (Kurmanji)ky Kyrgyzlo Laola Latinlv Latvianlt Lithuanianlb Luxembourgishmk Macedonianmg Malagasyms Malayml Malayalammt Maltesemi Maorimr Marathimn Mongolianmy Myanmar (Burmese)ne Nepalino Norwegianps Pashtofa Persianpl Polishpt Portuguesepa Punjabiro Romanianru Russiansm Samoangd Scottish Gaelicsr Serbianst Sesothosn Shonasd Sindhisi Sinhalask Slovaksl Slovenianso Somalies Spanishsu Sudanesesw Swahilisv Swedishtg Tajikta Tamilte Teluguth Thaitr Turkishuk Ukrainianur Urduuz Uzbekvi Vietnamesecy Welshxh Xhosayi Yiddishyo Yorubazu Zulu

Safety Valve

E-mail:dkv@dkvchina.com

Whatsapp：+8613690635385

DKV VALVE

Your trustworthy Safety Valve supplier

DKV VALVE provides high quality safety valve products. Since 1981, the DKV team has been developing and supplying safety valves in China. We offer safety pressure relief valves in stainless steel, cast iron, cast steel, brass and other materials. Please contact us for more information.

Online enquiries, fast responses！

contact us

DKV VALVE

What is safety valve ？

We provide variety of safety valves.

A safety valve is a crucial device for protecting industrial systems and equipment from overpressure. It auto-opens to release excess pressure and closes when pressure is back to a safe level, ensuring the systems and equipment are safe.

At DKV VALVE, we understand the importance of safety valves in maintaining pipeline transportation. Our safety valves have excellent designs and CE, ISO, and TS certifications. When used efficiently, DKV provides quality assurance.

DKV VAVLE

Material of safety valve

Safety valve materials vary. Stainless steel safety valves offer corrosion resistance and durability. Cast iron safety valves are cost-effective and suitable for some general applications. Cast steel safety valves can handle higher pressures and temperatures. Brass safety valves are often used in specific, less corrosive environments, each with distinct characteristics and application scopes.

  • Stainless Steel Safety Valve
  • Cast Iron Safety Valve
  • Cast Steel Safety Valve
  • Brass Safety Valve

Stainless Steel Safety Valve

Cast Iron Safety Valve

Cast Steel Safety Valve

Brass Safety Valve

Stainless Steel Safety Valve

Applicable Scenarios:
It is highly suitable for industries with strict demands on corrosion resistance, such as chemical processing, pharmaceutical manufacturing, food and beverage production, and marine engineering.

Temperature Range:
SS304: -268°C to 425°C.
SS316: With enhanced corrosion resistance, it has a broader applicable temperature spectrum and can withstand more severe temperature and corrosive conditions.

Advantages:
1. Corrosion resistant, it can maintain its functional integrity for a long time even in harsh chemical environments.
2. High toughness, can withstand large pressure differences and mechanical stress.
3. Easy to clean and maintain, meeting the strict hygiene requirements of industries such as food and pharmaceuticals.

Cast Iron Safety Valve

Applicable Scenarios:
Low pressure and low temperature applications.
Light industrial equipment.

Temperature Range:
≤230°C

Advantages:
1. Affordable. It offers an economical solution for applications that do not require high-pressure or high-temperature resistance.
2. Good vibration damping characteristics, which can help reduce noise and vibration within the piping system.

Cast Iron Safety Valve

Applicable Scenarios:
Low pressure and low temperature applications.
Light industrial equipment.

Temperature Range:
≤230°C

Advantages:
1. Affordable. It offers an economical solution for applications that do not require high-pressure or high-temperature resistance.
2. Good vibration damping characteristics, which can help reduce noise and vibration within the piping system.

Cast Steel Safety Valve

Applicable Scenarios:
Suitable for medium and high pressure industrial systems and large processing facilities. Used to handle a variety of media including steam, gas, and liquid.

Temperature Range:
-29°C to 425°C.

Advantages:
Compared to cast iron, it has substantially higher strength and toughness, allowing it to withstand elevated pressures and heavy mechanical loads.

Brass Safety Valve

Applicable Scenarios:
Used in applications where the medium is non-corrosive or only mildly corrosive to brass.

Temperature Range:
≤200℃

Advantages:
1. Corrosion resistance. Suitable for non-corrosive or mildly corrosive media such as water and air.
2. Good thermal conductivity. Conducive to equipment heat dissipation, suitable for temperature-sensitive scenarios.

Brass Safety Valve

Applicable Scenarios:
Used in applications where the medium is non-corrosive or only mildly corrosive to brass.

Temperature Range:
≤200℃

Advantages:
1. Corrosion resistance. Suitable for non-corrosive or mildly corrosive media such as water and air.
2. Good thermal conductivity. Conducive to equipment heat dissipation, suitable for temperature-sensitive scenarios.

DKV VALVE

24-hour manual online service

Let’s build the world together.

contact us

DKV VALVE

Types of safety valves

There are many ways to classify safety valves. According to the structural form, it is classified into lever-type and spring-type. According to the medium displacement, it is classified into fully enclosed type and semi-enclosed type. According to the valve disc opening height, it is classified into micro lift type, medium lift type, and full lift type.

1

Safety valves classified by structure

  • Lever-type Safety Valve： When system pressure rises, medium force on the valve core grows. If its torque exceeds the weight on the lever, the lever turns—the valve core lifts, opening the valve. Pressure drops and the valve closes as weight torque dominates.
  • Spring-type Safety Valve: System pressure acts on the valve core. Once it hits the set spring force, the core lifts against the spring, opening the valve. As pressure falls, spring force prevails, reseating the core to close.
2

Safety valves classified by medium discharge method

  • Fully Enclosed Safety Valve：The fully enclosed safety valve is a sealed unit. When the pressure inside the system exceeds the set value, the valve opens to release the excess pressure. The discharged medium is redirected through a connected pipe to a specific collection or treatment area.
  • Semi-enclosed Safety Valve：The semi-enclosed safety valve also opens when the internal pressure surpasses the set limit. However, it allows part of the discharged medium to escape directly into the atmosphere, while some may be directed through a small outlet for partial containment or redirection.
3

Safety valves classified by medium discharge method

  • Micro – lift Safety Valve：When the system pressure reaches the set pressure, the valve disc of the micro – lift safety valve lifts slightly. This allows a small amount of fluid to be discharged to relieve the pressure until the system pressure drops below the set value and the valve closes.
  • Medium – lift Safety Valve：As the system pressure rises to the set point, the valve disc of the medium – lift safety valve lifts to an intermediate extent. A moderate amount of fluid is released to reduce the pressure. Once the pressure is low enough, the valve returns to its closed position.
  • Full – lift Safety Valve：When the system pressure exceeds the set pressure, the full – lift safety valve’s disc lifts fully. A large amount of fluid is rapidly discharged to quickly bring down the over – pressure. The valve closes when the pressure goes back to a safe level.

DKV VALVE

Safety valve connection method

Safety valves have different connection methods. The threaded safety valve is convenient and suitable for small-diameter valves, providing a simple and compact installation. The flanged safety valve is more robust and commonly used for larger valves or in applications requiring higher pressure resistance and stability.

  • Threaded Safety Valve

A threaded safety valve is designed with screw threads on its inlet and/or outlet. It is suitable for smaller diameter pipes and lower pressure applications. Installation is relatively simple by screwing the valve directly into the pipe fittings, providing a convenient and compact connection solution.

A28W drawings
  • Flanged Safety Valve

A flanged safety valve has flanges on both ends. It is used for higher pressure and larger diameter piping systems. The flanges are bolted together with gaskets in between to ensure a tight seal. This connection type offers strong stability and is easy to disassemble for maintenance or replacement.

A48 drawings
Get In Touch
  • BaoLi Center T41601, Le Cong Town, Shunde District, Foshan City, Guangdong Province, China
  • +8613690635385
  • dkv@dkvchina.com
Find Us
Follow Us
Facebook Youtube

Send us a message

Fill out the form below and we will contact you as soon as possible!

DKV – China Which Has About 40 Years Experience Of Valves, Pipes And Fittings

OUR PRODUCTS

QUICK LINKS

CONTACT US

BaoLi Center T41601, Le Cong Town, Shunde District, Foshan City, Guangdong Province, China

Facebook-f Youtube Whatsapp

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “dkvchina.com”. 

Sign up and get 10% OFF

We will contact you within 1 working day, please pay attention to the email with the suffix “@dkvchina.com”.