The company has added a new 1 by 1-1⁄4 in., straight through, ammonia relief valve to its 5300 Series. Standard pressure settings are available in 150, 250, and 300 psi, and other settings are available as well. Other features include a stainless steel body, stainless steel piston, and a seat made of Teflon®.

—Henry Technologies

Melrose Park, IL