Why choose us
Rich Product Range
Our company can produce different types of motorboat hulls, motorboat front bumpers, motorboat rear bumpers, screw gaskets, motorboat throttles, motorboat hoses, sliding bearing shells and more.
Wide Sales Area
Our products cover nearly 30 provinces and cities in China and are exported to North America, South America, Oceania, Europe, Asia-Pacific, etc.
Customizable
In addition to providing standard spare parts for various models of Sea-Doo ships, we also provide spare parts of other brands, and provide customized design and manufacturing services according to customer requirements; providing standard spare parts and OEM/ODM services to hundreds of customers.
Leading Service
We have many years of industry experience and a complete production management, quality supervision, sales service operation system. Whether you are looking to purchase marine spare parts or steering gear parts, just email your requirements and we can customize the product for you.
What is Pressure Relief Valve Connector
A pressure relief valve (PRV) is a type of safety-related component used in the pipeline or with vessels in pneumatics. Relief valves are used to limit the amount of compressed air pressure in a system so that it doesn’t build up above a pre-set level and cause damage to machinery or people. These types of valves are therefore used to stop over-pressurization, where air pressure exceeds the maximum allowed for that system.
●Pressure relief valves are less expensive.
●The pressure relief valve resets itself.
●Pressure relief valves can also be used to check the receiver pressure.
●It is impossible for a pressure relief valve to malfunction.
A Pressure Relief Valve Is Comprised Of Three Functional Elements
VALVE ELEMENT (poppet valve)
Most commonly, pressure relief valves employ a spring loaded “poppet” valve as a valve element. The poppet includes an elastomeric seal or, in some high pressure designs a thermoplastic seal, which is configured to make a seal on a valve seat. In operation, the spring and upstream pressure apply opposing forces on the valve. When the force of the upstream pressure exerts a greater force than the spring force, then the poppet moves away from the valve seat which allows fluid to pass through the outlet port. As the upstream pressure drops below the set point the valve then closes.
SENSING ELEMENT (piston or diaphragm)
Piston style designs are often used when higher relief pressures are required, when ruggedness is a concern or when the relief pressure does not have to be held to a tight tolerance. Piston designs tend to be more sluggish, compared to diaphragm designs due to friction from the piston seal. In low pressure applications, or when high accuracy is required, the diaphragm style is preferred. Diaphragm relief valves employ a thin disc shaped element which is used to sense pressure changes. They are usually made of an elastomer, however, thin convoluted metal is used in special applications. Diaphragms essentially eliminate the friction inherent with piston style designs. Additionally, for a particular relief valve size, it is often possible to provide a greater sensing area with a diaphragm design than would be feasible with a piston style design.
THE REFERENCE FORCE ELEMENT (spring)
The reference force element is usually a mechanical spring. This spring exerts a force on the sensing element and acts to close the valve. Many pressure relief valves are designed with an adjustment which allows the user to adjust the relief pressure set-point by changing the force exerted by the reference spring.
There are three main differences between pressure relief valves and pressure safety valves: purpose, operation, and setpoint.
Purpose
The purpose of a relief valve is to keep the pressure in a system within set limits to prevent overpressure. Safety valves have a fail-safe purpose to protect people, the environment, and property.
Operation
Pressure relief valves open proportionally to the pressure increase above the setpoint. The valve closes gradually. Safety valves will pop open immediately upon the system pressure reaching the setpoint.
Setpoint
The setpoint (response pressure) is the pressure at which the valve starts opening. The setpoint is usually set below overpressure conditions and above the working pressure level. Safety valves open a small amount before the pressure reaches the setpoint and pop open at the setpoint or a specified value after the setpoint. Relief valves start opening at the setpoint.
Design
Basic safety valves and relief valves have nearly identical designs. They have a spring-supported disc that rests on a seat to keep the valve close until system pressure reaches the valve’s set pressure. The spring can be non-adjustable, or it can be adjustable to change the valve’s set pressure.
How Does a Pressure Relief Valve Work
PLVs are used to safeguard compressed air systems against over-pressurisation. They achieve this through the release of surplus pressure.
The force generated by pressure acting against the seat of the valve opens it through spring tension. The manual action of rotating the control handle provides the ability to increase or decrease levels of tension within the spring. In turn, this adjusts the amount of pressure needed for the valve to open.
In the event that pressure rises higher than a pre-set level, the excess pressure can be eased via a spring-loaded mechanism. This will open as a result of the high pressure, in comparison to the defined level. When the excess has been relieved from the system, the pressure will drop to its former levels. This will close the relief valve again.
Pressure relief valves are designed to prevent a system over-pressurisation. The action of quickly exhausting air out of the vessel or tank makes them highly useful. As a result, they are a necessity for both safety reasons and ensuring the dependable running of air compression systems.
Pressure relief valves are built from durable materials due to the demanding job they perform. Common materials include stainless steel, bronze, and cast iron. These materials are selected for their strength, durability, and resistance to corrosion. After all, you don’t want your valve rusting or failing when you need it most.
Key components of a pressure relief valve include the main valve (or disc), the seat, the spring, the bonnet, and, in some models, the bellows. Each component plays a specific role in the valve’s operation. For instance, the main valve controls the flow of process fluid, while the spring provides the force needed to keep the valve closed under normal conditions.
Proper installation is crucial for a pressure relief valve to function effectively. Here are some key considerations:
Location: Install the valve at the highest point in the system or on the pressurized vessel. Pressure relief valves operate based on the static pressure of the fluid, which is highest at the lowest point in the system.
Connections: Ensure the inlet side of the valve is connected to the system and the outlet side is open to the atmosphere or connected to a discharge pipe. The piping should not restrict the flow of fluid from the valve.
Orientation: Install pressure relief valves vertically with the bonnet on top. This allows the process fluid to drain from the valve and prevents buildup.
Like any equipment, pressure relief valves require regular inspections and maintenance to ensure they function properly and have a long service life.
Inspections: Check the valve for signs of damage or wear, as well as verify the set pressure and relieving pressure.
Maintenance: This includes cleaning the valve, replacing worn components, and recalibrating the set pressure.
Types of Safety Relief Valves
There are five main types of safety relief valves commonly encountered. These are:
●Conventional Spring-Loaded
●Balanced Spring-Loaded
●Pilot-Operated
●Power-Actuated
●Temperature-Pressure Actuated
★Conventional Spring-Loaded
In a conventional spring-loaded valve, the bonnet, spring, and guide are exposed to the released fluids. If the bonnet is vented to the atmosphere, relief-system back-pressure will decrease the specified pressure. Conversely, if the bonnet is vented internally to the outlet, relief-system back-pressure will increase the set pressure. Due to this design, conventional spring-loaded valves are suitable for non-corrosive services and situations where back-pressure is less than 10% of the set point.
★Balanced Spring-Loaded
A balanced spring-loaded valve features a system that protects the bonnet, spring, and guide from the released fluids and reduces the effects of back-pressure. The disc area exposed to the atmosphere is precisely equal to the disc area exposed to back-pressure. These valves can be used in corrosive or dirty services and accommodate variable back-pressure.
★Pilot-Operated
A pilot-operated valve is controlled by an auxiliary pressure pilot. The pilot generates a resistance force on the main valve’s piston, while the process pressure passes through an orifice. As the process pressure approaches the set point, the net seating force on the piston increases.
★Power-Actuated
Power-actuated valves are controlled by a source of power such as electricity, steam, or water. These valves release pressure either to the atmosphere or to a container at a lower pressure.
★Temperature-Pressure Actuated
Temperature-pressure actuated valves are controlled solely by external temperature or pressure applied to the inlet side, similar to power-actuated valves.
Design Parameters
There are six basic design parameters to consider when choosing or designing a pressure valve:
Relief Pressure
Relief pressure refers to the amount of potential pressure that the valve can release from the process flow.
Flow Requirements
Understanding the maximum flow rate, flow variables, and port configuration is essential when selecting a relief valve.
Type of Fluid/Gas
An effective safety valve must be capable of containing and controlling fluid or gas flow and release. It is crucial to ensure that the correct body type and seal material are used for the intended application.
Size and Weight
Many applications require valve components that can fit into tight spaces. The valve’s material, mounting options, and thread sizes will also affect its weight.
Materials
Common valve materials include brass, aluminum, plastic, and stainless steel. Each material has its unique benefits, drawbacks, and compatibilities.
Temperature
The material used for a valve component must be compatible with the expected operating temperature of the application. Temperature can affect the functionality of the valve spring and flow capacity.
Shenyang Hengjia Yisheng Trading Co., Ltd. is a professional supplier of watercraft spare parts. Located in Shenyang, a traditional industrial base in Northern China, we integrate strong R&D capability and manufacturing forces to serve customers worldwide. By upholding the concept of "excellent quality, fair price, integrity management" during past years, we've gained a high reputation in the international market by providing our customers with cost-effective products and perfect after-sales service.
FAQ
As one of the leading retrofitting manufacturers and suppliers in China, we warmly welcome you to wholesale high-grade retrofitting for sale here from our factory. All customized products are with high quality and low price.
Pressure Relief Valve Connector,