Doering's line of needle valves includes models for shut off and flow control applications. These valves come in a wide array of sizes with housings in 1/8", 1/4" or 3/8" porting.

Mans Flow Control is a valves manufacturer specializing in needle valves specifically for industrial gas, water and air applications. These valves are created with 316 stainless steel or carbon steel metals. Size come in a range range of 1/4 to one inch and pressure rated to ten thousand psi. Mans Flow Control needle valves are rated up to twelve hundred degree Fahrenheit.

Circle Valve Technologies, Inc. is a distributor for a variety of valve manufacturers. Available products include needle valves such as the 2800 series forged body union bonnet needle valves specially designed for sever duty applications, featuring stem backseat and operational temperature range up to 700ºF.