Valve Marking – What Are Your Options?

Valve marking is an important part of your facilitty’s pipe safety. Valve marking enables employees and visitors to identify which valves are associated with specific pipes. This is important if a pipe has a leak, is being repaired or needs to be emptied, for example.

There are various products you can use for valve marking. One of the best choices is a metal valve tag. Metal valve tags are durable, and therefore a great way to label pipes and other equipment in harsh environments.


Aluminum tags are tough and durable for repeated use. These tags do not bend and will not rust, even if they are scratched. Aluminum tags can also withstand temperatures of 1500° F. And, if you want to color code your valves, some companies sell color-coded aluminum tags that are precision engraved to ensure the wording won’t wear off.


Brass tags are a more economical valve marking option. Similar to aluminum tags, brass tags will not bend or break. But, they can only withstand temperatures of 1200° F.

Stainless Steel

Stainless steel tags are rust resistant and can stand up to highly corrosive environments or extreme weather conditions. These tags can withstand extreme temperature of 2700° F.

Plastic tags are also a viable option for valve marking. Plastic tags can be an economical and easy-to-use option for valve and machine marking. Unlike metal tags, plastic valve tags offer you the option to write right on them, versus spending extra money on engraving.


Self-fastening tags allow placement of a tag on valves and equipment without the need for fasteners or tools. Self-fastening tags are flexible, yet durable for high performance. They also resist dirt, grease and moisture. These tags are available in stock legends such as “Do not close this valve” or OSHA-required headers. They even come blank so you can choose your own message.

Economy Plastic

Economy plastic tags are made of thin plastic that can be attached to valves or machines with virtually any type of fastener. Economy plastic tags are not overly durable, so they may not be the best choice for making valves exposed to harsh conditions.

Heavy-Duty Plastic

Heavy-duty plastic tags are made of thicker plastic so they can withstand tougher use. Heavy-duty plastic tags are a more durable, tear-proof tag as compared to economy plastic tags. Like most plastic tags, you can have them custom worded or simply write right on them.

Write on

Most plastic tags can be easily written on for quick valve marking. Some write-on tags come pre-numbered with space to write a personalized label, while others come completely blank for full customization.