 NEW PRODUCT: Super Quick Exhaust (SQE) Valves for Enhanced Remote Closure and Multi-Control Shuttling
Enhanced Remote Closure
The SQE valve is available in 1/8" FNPT openings-SQE1 or 1/4" FNPT openings-SQE2.
A number of authorities having jurisdiction have complained that occasional storage locations take too long to shutdown the internal valves and ESV's when the remote shutdown systems are activated. GEC offers a product called a Super Quick Exhaust Valve (SQE), manufactured byHumphrey Valves.
The SQE valve speeds up the discharge rate of a pneumatic actuation system. Let's look at a pneumatic system that consisted of 300 feet of tubing with 9 actuators and included two 3-way shutdown control toggle valves in the system. One was located at the bobtail bulkhead and one at the exit fence about ninety feet away. The toggle at the bulkhead was closing all the valves in about 15 seconds which was acceptable; however it was taking 55 seconds to close when activated at the fence control valve.
By utilizing an SQE2 (1/4") super quick exhaust valve and installing it near the inlet side of the bulkhead toggle; after installation when re-tested the 3-way shutdown toggle at the fence closed all the actuators in 10 seconds. When you recharge the pneumatic system it automatically resets itself.
The SQE valve provides a very affordable (<$30) and enhanced pneumatic shutdown system providing rapid closure of ESV's and internal valves. The installation is simple by using two of quick connect tubing fittings and cutting the tubing to install.
Important Note: Since NFPA 58 (2008 ed), 6.10 (2) limits the size of tubing that can be used on a pneumatic control system to 3/8" outside diameter, shutdown times will be extensive with lengthy runs of tubing on a large installation. The use of several SQE(s) may be warranted on an as-needed basis, since most tubing used is ¼" OD.
Additional Note: Some AHJ have required only one remote shutdown station; but in accordance with NFPA 58 (2008 ed), section 5.12.4 (3) if you are installing ESV's with Actuators (not cable or pneumatic releases), you may be required to provide a pneumatic shutdown station at the ESV location to meet paragraph (3) that requires manual shutoff at the installed location (espeically if they are installed on top of tanks or in inaccessible areas or without manual closure capability). If the ESV was being installed for cable closing or pneumatic release closing you would not need a pneumatic shutdown station at the ESV because you have access to closing by using the handle manually. But, when you install an actuator; you lose manual control of the valve except through the remote control station.
Multi-Control Shuttling:
The SQE valve can also be utilized as a SHUTTLE VALVE in addition to a super quick exhaust valve. "What is a shuttle valve? Have you ever had an installation with multiple bulkheads where you wanted to have individual control of the storage tank internal valves and individual bulkhead ESV's from each bulkhead? If so, by utilizing a shuttle valve you can control internal valves or ESV's from multiple locations without hindering each other's operation.
For example, a customer with two bulk storage tanks incorporating two internal valves in each tank and two bulkheads with two ESV's at each bulkhead; can prevent operation of valve closure at the remote bulkheads when one transport completes unloading/loading. The concern is when a bobtail would load at a different bulkhead while a transport was already unloading at the first bulkhead. You do not want the transport driver to shutdown the master remote shutdown and close the tank internal valves while the bobtail driver is still loading his bobtail creating a safety issue by running the pump dry with no liquid supply from the tanks. To prevent this from occurring you can utilize separate 3-way control valves at each bulkhead and still have a master remote control shutdown to meet the regulatory requirement (at least 25' not more than 100' from the liquid transfer point).
Multi-Control Shuttling #2 Example:
Another application for a SQE valve as a Shuttle valve is a bulk storage site with a bulkhead but also has a cylinder filling station that is supplied from one of the storage tanks. By installing separate 3-way control valves at the bulkhead and cylinder station you can use a SQE to control the internal valves on the storage tank that supplies the cylinder pump. This will allow you to be able to 1) shut down all ESV's and internal valves from the Remote station, 2) The control valve at the bulkhead will shutdown the bulkhead ESV's and all internal valves on all tanks UNLESS the control valve for the cylinder pump is open, then the cylinder filling supply tank internal valve will remain open until that control valve or the Master remote control valve is closed. 3) if the master remote is open and the cylinder pump control is opened it will open only the internal valve on the pump supply tank.
GEC offers the SQE 1 & SQE 2 valves for both super quick exhaust closing of pneumatic control systems as well as for multi-control shuttling of storage or dispenser applications. To order or request more information on SQE valves contact our customer service or sales representatives. The SQE valves are also available through our "virtual warehouse" online ordering system. | 
GEC offers listed, appliance cutoff valves with non-displaceable valve members. GEC valves are manufacturered by Jomar and are CGA, AGA, and UL listed for LP gas up to 600 psig/-40 degrees F to 300 degrees F. They are available in a number of sizes with flare by flare, flare by NPT, and NPT by NPT thread connections.
