Valves

Inexpensive Safe Water Tapped by Correcting Control Valve Output

Articles

Inexpensive Safe Water Tapped by Correcting Control Valve Output

The error output from a control valve can come from a variety of sources: uncontrolled input pressure, uncontrolled input flow rate, inaccurate orifice size or turbulent flow through the system which causes irregularity of flow rates through the system.

Automation Controls General Valves Water/wastewater

February 23, 2015

Solenoid Valve Technology for Upstream Oil and Gas Heating Equipment

Articles

Solenoid Valve Technology for Upstream Oil and Gas Heating Equipment

Low-temperature stainless-steel fuel shutoff valves are typically used for on/off control of fuel gas within gas fuel trains in process heating system burners.

Automation General Valves

February 17, 2015

The Rationale Behind Valve Characteristics

Articles

The Rationale Behind Valve Characteristics

Back in the “early days,” we were taught that, to properly control flow, we should select a linear valve characteristic when the valve controls more than 25% of the piping system pressure drop at full flow.

Automation Controls General Valves

December 15, 2014

Advanced Machine Tools Keep Production Costs in Check

Articles

Advanced Machine Tools Keep Production Costs in Check

The valve landscape has changed over the past few decades—instead of über-high volumes of simple valves, many buyers and makers of valves are increasingly aiming for low-to-medium volumes of complex, high-precision valves made from exotic materials.

General Thought Leadership Valves

August 4, 2014

New API Standard for Globe Valves

Articles

New API Standard for Globe Valves

While the American Petroleum Institute (API) and other organizations published a variety of valve standards covering gate, ball, check, butterfly and plug valves for decades, the first for globe valves came out in 2013.

General Quality/Compliance Thought Leadership Valves

June 24, 2014

Pressure Seal Standards Update

Articles

Pressure Seal Standards Update

The EPA has been reducing the allowable fugitive emissions on valves in the last few years.

General Quality/Compliance Thought Leadership Valves

April 28, 2014

Improve Ethylene Conversion: Critical Control Valves for Cracked Gas Processing

Articles

Improve Ethylene Conversion: Critical Control Valves for Cracked Gas Processing

Maximum ethylene production requires several conditions: a highly saturated feedstock, high coil outlet temperature, low hydrocarbon partial pressure, short residence time in the radiant coil, and rapid quenching of the cracked gases.

General Valves

March 17, 2014

Using Advanced Sealing Technologies to Prevent Fugitive Emissions

Articles

Using Advanced Sealing Technologies to Prevent Fugitive Emissions

With valves accounting for 60 percent of all non-compliance, conventional valve packing will not be an acceptable emissions solution by itself moving forward.

General Valves

August 20, 2013

The Intriguing Story of the Pressure Seal Valve

Articles

The Intriguing Story of the Pressure Seal Valve

In a quest for more efficient power generation, power plants in the 1930s pushed the pressure-temperature envelope.

Thought Leadership Valves

August 12, 2013

Forensic Engineering Tracks Valve Failures

Articles

Forensic Engineering Tracks Valve Failures

Due in part to the condominium boom, there have been a large number of suite HVAC unit isolation brass ball valve failures reported in fan coil or heat pump based heating/cooling systems high rise buildings.

General Valves

July 29, 2013

Trends in Independent Valve Pressure Testing

Articles

Trends in Independent Valve Pressure Testing

Before the industry slowdown of 2008, end users performed third-party pressure testing of valves for use in critical service according to the acceptance criteria of ASME B16.34, API-598, API-6D, etc.

MRO Quality/Compliance Thought Leadership Valves

June 6, 2013

Offshore High Pressure Relief Valve

Articles

Offshore High Pressure Relief Valve

Oil wells drilled in deep waters typically face many difficulties with pressure, especially as the wells are placed on the bottom of the ocean floor.

General Supply Chain Valves

April 16, 2013