Pressure Relief Valves
Pressure relief valves, also known as safety relief valves or pressure safety valves, protect vessels or containers in the event of overpressure. This occurs when the pressure inside an enclosed container or equipment exceeds the predetermined or maximum working pressure level. Safety relief valves safeguard containers and provide safety by releasing gas from the over-pressurised container or equipment.
Pressure relief valves regulate fluid systems’ pressure, flow, and temperature. These valves are designed to operate independently, eliminating the need for electric power or compressed air. Additionally, safety relief valves provide an added layer of protection as they are tamper-proof and do not require field maintenance. This makes them ideal for ensuring system safety and minimising downtime.
Ultra-high flow valves are designed for overpressure and vacuum relief applications. They are available in three standard sizes of 1”, 3”, and 8” (25mm, 76mm, and 200mm) and range from 0.5 to 5.0 psi, and can operate in adverse environments such as driving rain, corrosive chemicals, and low and high temperatures.
Two-Way Relief Valve
Two-way relief valves can be used for transit and storage containers and electronic and electro-optics equipment. The tamper-proof valves have standard settings ranging from 0.5 psid to 3.0 psid to reseal the pressure. They have a manual release push-button for equalising the pressure or vacuum differentials to open the container or equipment.
Purge Relief Valve
The purge relief valve provides a tire valve core in minimum-length housing to purge or use in pressurised containers. An air chuck is required to activate the valve. Users can attach the safety wire to the body to secure the cap.
Outward Relief Valve
Outward Relief Valves relieve pressure in electro and electric-optic equipment and standard settings from 0.5 psid to 5.0 psid. They are available in different models such as thread outward relief valve, flange mounted outward relief valve, push-fit outward relief valve, un-threaded glass loaded nylon with splash guard outward relief valve, 10mm diameter push-fit outward relief valve, and 1.5 BSP double thread outward relief valve, etc.
A non-return valve is designed to allow airflow in one single direction and prevent it from coming in the opposite direction. It comes in in-line non-return valve and M16 thread non-return valve models.
Manual Relief Valve
Manual relief valves offer various methods to equalise vacuum differentials or pressure before opening the containers. They are equipped with attaching hardware and can be easily installed on the wall of the case. Some models even come with a safety wire protection feature to prevent the containers from unauthorised openings of the valves. The torque value for the installation is 30 lbs/ins.
Inward Relief Valve
The inward relief valve has a vacuum relief with settings ranging from 0.5 psid to 5.0 psid pressure. As it is tamper-proof, this valve does not require any field maintenance. It comes in eight models, ideal for electronic and electro-optics equipment applications. Some of these let a desiccant cartridge be fitted for adsorbing the moist air in the container or equipment.
High Flow Relief Valve
A high-flow relief valve helps to move high quantities of air automatically and quickly to prevent pressure buildup in applications. It provides pressure and vacuum relief at an opening point of 0.50 psi ± 0.25 psi for fast or explosive decompression. It is best to protect from atmospheric pressure and allow safe application access.
FOOG vent is ideal for preventing the overpressure in the packaging caused by the gassing of a product during and after the process. Users can use the vent to equalise the atmospheric variations. It has a sintered plastic filter to withstand side loads and shocks during filling and transit. It can be mounted into gas tap flanges or bulkhead mounted with an adaptor flange to protect storage bags containing food aggregates and milk powder.
Exhaust & Connection Port
Large containers need equipment for air drying to ensure a contaminant and moisture-free environment. Exhaust and Connection Ports are essential for efficient and seamless operations. Humi Pak offers a self-sealing valve (Connection Port) and a manual relief valve (Exhaust Port). Both ports work together to ensure air circulation inside the container, preventing flowing out.
Relief Valves with Humidity Indicator
Relief valves with humidity indicators are ideal for optical-electronic equipment, moisture-sensitive electronics, or any other device or equipment requiring humidity control in enclosed spaces subject to air transportation. Relief valves with humidity indicators need a single hole for fitting in containers or equipment, and the sensor paper changes colour from blue to pink with an increase in humidity. It is also possible to insert a desiccant cartridge as an additional unit, called a static desiccator, to absorb any additional humidity or moisture from within the equipment.