Pentair Valves & Controls is expanding its Anderson Greenwood pressure relief product range with the launch of an improved design of its pilot-operated pressure relief valve (POPRV) model for LNG storage in on- and offshore applications.

The Anderson Greenwood 9300H offers LNG operators a key advantage by increasing flow capacity by 30%, enabling the design and construction of larger storage tanks, without the need to increase valve sizes. In addition, the compact new model minimises equipment footprint, which is especially critical for LNG vessels where space is limited.

The valve’s increased robustness and durability also provide significant savings on overall maintenance costs, as it requires less frequent and easier repair services.

As the size of LNG storage tanks is increasing, valve flow capacity needs to meet these growing requirements for optimum performance. Additionally, the special requirements of LNG storage applications make it necessary for valve equipment to accurately maintain the pre-set pressure and resolve any events that occur outside of these configurations.

Pentair’s Anderson Greenwood 9300H valve design overcomes these two key challenges in LNG storage applications. By providing increased flow, the valve can efficiently and quickly relieve pressure without the need to increase its size, offering LNG carrier owners and plant operators design flexibility. This is a vital advantage in LNG pressure protection applications, where cost-effectiveness, operational efficiency and maintenance are crucial to reducing unplanned operational downtime.

The 9300H model comes in sizes from 2 x 3 inches to 12 x 16 inches, with sturdy body casting and simplified trim design for easier maintenance. Its pilot, mounted directly on the valve cap, provides a lower and more compact valve profile and increases its sturdiness for more stable flows.

This shorter body design is fully versatile and can accommodate both on- and offshore storage requirements. In addition to its increased flow capability, the new valve handles a large temperature range and features a self-draining body and low sensitivity to back pressure within the exhaust piping. The valve also significantly reduces the possibility of leakage by enhanced seating forces and improved seat design.

Jean-Paul Boyer, senior regional product manager EMEA, Pressure Management Group at Pentair Valves & Controls comments, “The changes in the LNG market have led ship and plant managers and their suppliers to increase tank sizes for bigger flow capacity and performance. However, the need for small and reliable equipment still remains the same. Pentair’s valve expertise addresses the industry requirements of operators and end users with the Anderson Greenwood 9300H POPRV.”

“We have carried out extensive testing to develop a valve design that evenly distributes more flow and contains pressure under varying conditions, without increasing its size. We bring extensive application experience in the LNG sector, which enables us to improve and optimize critical valve technology. Working closely with our customers, we continue to support future developments in LNG and put the needs of LNG vessel designers, builders and operators at the forefront of what we do.”