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This section provides an overview for pressure relief valves as well as their applications and principles. Also, please take a look at the list of 1 pressure relief valve manufacturers and their company rankings.
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A pressure relief valve, also known as a residual pressure exhaust valve, is a valve designed to effectively release the residual pressure within a fluid system.
Typically employed in systems such as pressure vessels and pipelines, this mechanical component addresses the concept of residual pressure, which generally refers to the presence of remaining pressure or hydraulic force. When there is residual pressure in a fluid system carrying liquids or gases, the fluid within the system may continue to flow. Releasing residual pressure is crucial, especially for maintenance-related safety considerations, as it can impact the safe handling of equipment.
The use of a pressure relief valve allows for the safe release of pressure within the system. Consequently, these valves are frequently adopted in facilities where safety is a top priority.
However, it is paramount for pressure relief valves to function correctly. In cases of blockage, failure to completely release residual pressure may occur, emphasizing the need for regular inspections and maintenance. Visualizing internal pressure alongside instruments such as pressure gauges enhances safety.
Pressure relief valves serve as crucial devices used in various industrial sectors.
Steam generated in boilers and heating systems is supplied at high pressure. Even after processes are halted, there is a possibility of excessive steam pressure remaining in the piping. When maintaining such piping, pressure relief valves are often employed to exhaust excess steam pressure, reducing the system pressure to atmospheric levels. This prevents damage to equipment and pipelines, ensuring operational safety.
In hydraulic units like hydraulic presses, hydraulic pressure may linger after the operation concludes. If piping is opened in this state, there is a risk of dangerous high-temperature oil injection. A pressure relief valve exhausts excess hydraulic pressure, restoring the system to a safe state.
In air pressure systems, when devices or actuators that were in operation come to a stop, air may remain within the equipment. This can lead to unexpected movements of the equipment that has supposedly stopped. Using a pressure relief valve allows for the safe venting of pressure within the equipment after operation, stabilizing system operation.
While pressure relief valves come in various types, many use a 3-port valve configuration. They typically consist of a valve body, handle, and valve element.
The valve body is commonly made of metal or alloys and is designed for attachment to piping via threading or flanges. It has a structure with one inlet port and two outlet ports.
The handle, attached to the valve body, is the component used to operate the valve element. In the case of electric or pneumatic operation, electromagnetic coils or cylinders may be attached. By manipulating the handle, the position of the valve element can be controlled, regulating the exhaust of fluid.
The valve element is the component that controls the movement of fluid. By contacting the seat on the valve body, it seals and prevents fluid leakage. The operation of the valve element determines whether the outlet ports are connected to the inlet port or if exhaust occurs.
When choosing a pressure relief valve, several factors need to be considered.
The size of the pressure relief valve must match the inner diameter of the piping where it will be installed. Choosing a valve that fits the pipe diameter ensures proper flow rates and improves system efficiency.
For proper valve operation, it needs to withstand the maximum pressure. Exceeding the maximum operating pressure is hazardous, potentially causing equipment damage or forceful fluid leakage. The selected pressure relief valve should operate effectively within the maximum pressure range.
Considering the type of fluid and its chemical characteristics, selecting the appropriate material is crucial. Corrosive fluids require materials with high corrosion resistance. Common materials include stainless steel, brass, and iron.
The valve's operating mode, manual or automatic, must be chosen. Manual operation involves human control to open and close the valve, while automatic operation uses electric, pneumatic, or hydraulic actuators for control.
The temperature of the fluid being handled dictates the proper selection of the valve. If the fluid temperature exceeds the allowable temperature, it may cause malfunction. Special attention is required, especially when dealing with high-temperature fluids like steam.
*Including some distributors, etc.
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Hornung GmbH is a manufacturer of pressure gas technology products established in 2010 and based in Neu-Isenburg, Germany. The company primarily produces pressure gas control valves for ultra pure gasses and technical gasses such as argon, butane, and extinguishing gasses. It also offers CNC-machined turning and milling components, as well as complete electromechanical assemblies tailored to customer specifications. The company chiefly serves clients in the industrial processing sector, such as those in refinery and wastewater treatment operations.
Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Germany
|
1 | 100.0% |
40 products found
40 products
Los Asian Co., Ltd.
320+ people viewing
Last viewed: 9 hours ago
Standard Response
■ Product overview ・ Classic or modular lockout L-O-X® valve ・ Filter, integrated filter/regulator, lubricator with metal bowl ・ DM1 Series with...
10 models listed
Los Asian Co., Ltd.
360+ people viewing
Last viewed: 3 hours ago
Standard Response
■ Product overview ・ Classic or modular lockout L-O-X® valve ・ Filter, integrated filter/regulator, lubricator with metal bowl ・ Category 2, PLC...
10 models listed
Nippon Dick Co., Ltd.
300+ people viewing
Last viewed: 8 hours ago
Standard Response
5.0 Company Review
4 models listed
CKD
20+ people viewing
Last viewed: 3 hours ago
Standard Response
■Summary This is the industry's smallest class residual pressure release valve that has obtained ISO13849-1 safety standard certification. ■Spool ...
CKD
20+ people viewing
Standard Response
■Summary This is the industry's smallest class residual pressure release valve that has obtained ISO13849-1 safety standard certification. ■Spool ...
Nakajima Koki Co., Ltd.
150+ people viewing
Last viewed: 7 hours ago
■Features ・Can be used with G series F.R.L combination (bracket installation) ・Can be used as a manual 3 port valve. ・Improved visibility of ope...
7 models listed
Nakajima Koki Co., Ltd.
220+ people viewing
Last viewed: 4 hours ago
■Features Achieve system safety performance. Slow air supply, which gradually increases the initial pressure of the pneumatic system, and rapid air...
7 models listed
