Stand Alone Alarms -
Rivoira provides visual and acoustic signals. The alarms feature an illuminated green lamp that indicates standard operating conditions, and a lamp and horn check button that allows for self-checking. When one or more alarm signals are triggered, acoustic and visual signals are emitted.
Emergency Shutdown Systems -
Helping you maintain a maximum level of safety is one of our top priorities. To do this, we’ve developed a series of emergency shutdown system controllers that can be used in a wide variety of applications and can be tailored to fit your operations.
Diaphragm & Miniature Needle Valves -
Our valves can be used as the primary on and off control in high purity or corrosive gas systems. With its spring-less design and low-wetted surface area, these valves minimize particle generation and entrapment. Their unique design allows for low torque operation with gas flow in either direction.
We also offer miniature needle valves offered in brass, nickel-plated brass, 316 stainless steel or Monel®. They’re designed for fine flow control in a variety of applications in the chemical and petroleum processing industries, laboratories and hospitals.
Excess Flow Shut-Off Valves -
Our Shut-Off Valves are designed to automatically shut-off a gas line if the flow exceeds a preset limit. The valves are commonly used as a safety device to protect a system from excess flow in the event of equipment failure, or to protect personnel and property in the event of a line rupture. The capability of operating from 10 to 3500 psi allows them to be used in both high and low-pressure applications.
Check Valves & Relief Valves -
Check valves ensure that gases or liquids flow in one direction only. When used on the outlet line of pressure regulators, they prevent back flow of fluids into the regulator. When used in cylinder pigtails, they prevent gas flow from one cylinder into another on the same manifold. They also stop atmospheric air from entering the pigtail and manifold when a cylinder is removed. These check valves are bubble-tight against any backpressure.
Relief valves are commonly used downstream of pressure regulators to protect the regulator, pressure gauge and downstream system from over-pressurization caused by a regulator failure.
Compression Type Tube Fittings -
Compression type tube fittings are the most-commonly used in gas handling systems. Suitable for high-vacuum and high-pressure applications, they require no special tools, soldering or welding for installation, and can be remade repeatedly. They are available in both brass and Type 316 Stainless Steel.
Pipe Fittings -
Pipe fittings are typically used to join components together in a gas handling system, such as a flowmeter to a regulator, or installing a relief valve.
Cylinder Connections -
Cylinder connections are used for connecting various items of a gas handling apparatus. We offer cylinder connections in a wide variety of configurations and materials to fit your application.
High Purity Flexible Hoses -
Our 316 SS high-pressure flexible metal hoses are designed for strong, safe and flexible operation in demanding specialty gas environments. With zero permeation characteristics, these hoses do not allow gas or atmosphere to pass through their walls in either pressure or vacuum applications. These hoses are ideal for flammable, toxic, high purity and small molecule gases.
For oxygen services where particle impingement failure is a concern, Monel® high-pressure flexible metal hoses with Stainless Steel outer braiding is ideal. The SS braid is more economical and allows for higher working pressures than a Monel® braid.
For hoses that are constantly handled and flexed, armor casing protects against kinking, braid abrasion or stress at the end fittings. The smooth surface also provides additional handling protection for operators.
Gas Heaters -
Our gas heater is designed for use with carbon dioxide to prevent regulator freeze-up under high flow conditions. Installed between the cylinder valve and a suitable regulator, the heater warms the gas stream avoiding regulator freeze-up.
Our electric heater is designed for use with nonflammable liquefied compressed gases to prevent regulator freeze-up and to assure uniform temperature under high flow conditions. Connected between the cylinder valve and a suitable regulator, the heater warms the gas stream allowing regulator freeze-up.
The gauges allow you to monitor pressure in your systems or can be used to replace cylinder gauges.
Cylinder, Dewar & Tonner Scales -
Our series of cylinder scales are used to measure the weight of liquefied gases under pressure liquid in a cylinder. Accurate and reliable weight measurement enables the gas measurement system to maintain the high product purity you require.