Knowing the Crosby pressure relief valves

Posted by tedmark on May 30th, 2014

In the oil and gas industry, where pressure can build up in a system due to any reason, there is a very essential requirement of a relief valve. This valve helps to limit or reduce the pressure inside the vessel, and hence is an indispensable safety tool. Most pressure relief valves are spring operated, unlike other valves which could have a manual lever. There are several manufacturers of the pressure relief valves, the topmost being the Kunkle pressure relief valve and the Crosby pressure relief valves. As the valve is essential in providing complete protection, there are various elements that play a part in knowing if it is the perfectly fitting valve. These are the proper sizing, selection, manufacture, assembly, test, installation and maintenance.

The Crosby pressure relief valves are manufactured in accordance with a controlled Quality Assurance Program which meets or exceeds all requirements. Since pressure relief valves are safety devices, there are several codes and standards written to control their design and application. Crosby is the premier supplier of both direct spring operated and pilot operated pressure relief valves. The basic spring operated pressure relief valves are designed to meet the needs for a simple, reliable and system actuated device to provide overpressure protection. The Crosby Orifice pressure relief valve is the extension of the API 526 standard designs for air, steam, gas and the vapor applications.

The benefits of this model are that these have the broadest product being offered in the industry. Moreover, with less discharge lines and inlet connections, this product line has less maintenance costs. These can be applied for use in turbine exhausts, gas service at low pressure in refineries, chloride reactors that use polyvinyl, and also the moisture separators in the nuclear plants, among other applications. Similarly, the Kunkle pressure relief valve has several industrial and commercial applications, including steam, air, liquid including cryogenics, and non-hazardous gases.

The pilot operated models of the Crosby pressure relief valves have several advantages in select applications. An advantage of the pilot operated pressure relief valves is that the larger valve sizes come at a reduced cost. The large spring and associated envelope of spring operated valves are replaced by a small pilot, thus reducing the mass and cost of the valve. Generally, pressure relief valves can be used with either of the incompressible or compressible fluids, based on design, application or adjustment.

Valves like the Kunkle pressure relief valve must be selected by those who have complete knowledge of the product and the requirements of the system where the valve’s going to be installed. Selections should not be made on assumed conditions and incomplete information. The selection and sizing of the pressure relief valve is the responsibility of the system engineer and the user of the equipment that is to be protected. With regards to manufacturing, the pressure relief valve must be designed in such a manner, with compatible materials. They must also be designed to operate in a consistently smooth and stable manner on a variety of fluids and fluid phases.

There are several types of pressure relief valves like the kunkle pressure relief valve and the Crosby pressure relief valves. Make sure to choose the one that suits your needs best.