The most basic option for air and inert gas applications.

These valves have a bronze body for durability and a long service life. 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.

Change set pressure to suit your application—this valve includes four interchangeable color-coded springs with different set pressure ranges.

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

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.

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.

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.

Design a valve specifically for your process media and set pressure. Choose from a valve for air, inert gas, water, hydraulic oil, fuel oil, gasoline, or diesel fuel and a set pressure.

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

These valves are often used in hydraulic and lubrication systems.

Thicker walls and a 304 stainless steel seal make these valves tougher than brass pressure-regulating valves.

For a longer service life than brass and cast iron valves, these have a durable bronze body.

Use this valve in light duty water systems with garden hose thread (GHT) connections.

Excellent performance at low pressures.

Often used on dispensers, humidifiers, and fountains, these valves have a 316 stainless steel body that can stand up to deionized water and corrosive conditions.

Withstand more than six times the inlet pressure of standard pressure-regulating valves.

Change outlet pressure without using a gauge—turn the dial to adjust the outlet pressure in 5 or 10 psi increments.

Often used for oxygen service and other high-purity applications, these valves are cleaned and bagged to meet CGA G-4.1 standards to prevent contamination.

A 316 stainless steel body provides exceptional corrosion resistance in wet conditions and harsh environments.

Withstand inlet pressures up to 3,500 psi.

Regulate pressure in air and inert gas systems from your instrument panel—these valves have threads below the adjustment knob and come with a panel-mount nut.

Maintain contaminant-free standards in clean room environments. These valves come cleaned and bagged to Fed. Spec. Class 100 and ISO Class 5 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection.

Reduce contaminants in gases used in research sample systems, emission monitoring systems, chromatography, and other high-purity applications. These valves have a 316 stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination.

Designed for nitrogen gas purging in air conditioning, refrigeration, and plumbing systems.

Commonly used in TIG welding where gas flow/coverage is a concern.

Compression fittings bite down on hard metal and plastic tubing for a tighter seal than push-to-connect fittings.

A plastic body and fluoroelastomer seal stand up to harsh chemicals.

A 316 stainless steel body provides exceptional corrosion resistance in wet conditions and harsh environments.

For a longer service life than cast iron valves, these have a durable bronze body.

Designed to reduce contaminants in high-purity applications using hydrogen and methane gas, these valves have a stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination.

These valves meet NSF/ANSI 61 for use in drinking water systems.

Designed for oxygen service and other high-purity applications, these valves can withstand the extreme cold of liquid argon, liquid carbon dioxide, liquid nitrogen, and liquid oxygen.

Regulate air, gas, and liquid pressure on food, beverage, and pharmaceutical lines with these valves—they’re 3-A certified to meet sanitary design standards.

These valves have a cast iron body.

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.

Install these discs within the bolt circle of ANSI Class 150 flanges.

A lighter and more corrosion-resistant alternative to metal vacuum-regulating valves.

For precise control over your vacuum level, these valves have ±0.1% accuracy.

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

Set a specific pressure and these valves will maintain it.

Set a specific pressure and these valves will maintain it by diverting excess fluid to a tank.

Quickly vent exhaust air to the atmosphere or divert it to another place in your system to speed up the movement of equipment. The 90° elbow shape allows you to install them in tight spaces. Also known as quick exhaust valves.

A muffler reduces exhaust noise. Valves allow airflow into your equipment and then quickly dump exhaust air to the atmosphere without routing it back through a directional control valve to speed up the movement of equipment. Also known as quick exhaust valves.

Choose the pressure range you need. When these valves receive an air signal, they quickly dump exhaust air to the atmosphere without routing it back through a directional control valve to speed up the movement of equipment. They're often used with air compressors that require continuous operation. Also known as quick exhaust valves.

Prevent accidental start-up when servicing equipment.

Prevent accidental start-up when servicing equipment.

Prevent accidental start-up when servicing equipment.

Also known as Monday-morning valves, these valves slowly introduce pressure to reduce surge damage during start-up.

Also known as Monday-morning valves, these valves slowly introduce pressure to reduce surge damage during start-up.