Body is brass or nickel-plated brass. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

For corrosion resistance in wet conditions and harsh environments, these valves have a 303 stainless steel body. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

With a 316 stainless steel body for exceptional corrosion resistance, these valves are often used in wet conditions and harsh environments. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

Commonly used with high-volume blowers, compressors, and air-powered conveyors, these valves quickly relieve a large amount of air in systems with a pipe size of 2 or greater. All meet ASME Code Section VIII for use with air and inert gas pressure vessels.

These valves meet ASME Code Section I for use with steam power boilers requiring pressure relief above 15 psi.

Choose these valves for small steam-heating boilers requiring pressure relief between 5 psi and 12 psi.

Protect your water-heating system with these valves that meet ASME Code Section IV for hot water heaters and boilers.

Our only valves that meet ASME Code Section VIII for use with cryogenic pressure vessels. They are for use with argon, carbon dioxide, helium, hydrogen, methane, nitrogen, and oxygen.

These valves are commonly used with pumps in low-pressure water systems.

Change set pressure without guesswork—the adjustment screw is marked in 25 psi increments for making pressure adjustments without a gauge.

Less than a quarter of the height of standard pressure-relief valves, these are often installed on tanks in low-clearance areas.

A finely threaded adjustment screw lets you make precise set pressure adjustments.

Cleaned and bagged for oxygen service and other high-purity applications, these valves are built to withstand the extreme cold of liquid carbon dioxide, liquid nitrogen, and liquid oxygen.

These valves are often used with catalysts, pH buffers, and electroplating solutions.

For a longer service than cast iron valves, these have a durable bronze body and a 303 stainless steel seal.

Threads below the adjustment knob and an included panel-mount nut allow you to add these valves to your instrument panel.

These valves have a vented relief port to exhaust discharge directly.

Also known as fusible plugs, these discs have a metal core that melts at a set temperature to exhaust discharge directly.

A padlock locks the handle of these valves in the shut-off position so you can disconnect air tools safely.

Also known as blocking valves, these valves allow airflow while an air signal is applied to the air pilot. When the signal stops, the valve closes, trapping air in the system.

Prevent accidental start-up when servicing equipment.

Prevent accidental start-up when servicing equipment.

Prevent accidental start-up when servicing equipment.

To set the pressure, unscrew the cap and turn the adjusting screw.

An external nut lets you adjust the pressure without disassembling the valve.

Often used in tubing systems with low-flow drinking water faucets and fixtures, this valve meets NSF/ANSI 61 and has compression fittings that bite down on hard metal and plastic tubing for a secure seal. It blends hot and cold water to automatically maintain a set outlet temperature.

Commonly used in washdown applications, these systems include a temperature-regulating valve with an internal check valve and vacuum breaker to prevent backflow, two ball valves for manual control of the water supply, a dial thermometer that displays the outlet temperature, and a hose rack for storage.

Often used with large water heaters and other applications with flow rates greater than 25 gpm.

Solder to copper tubing.