This guide covers the most important questions posed by facilities managers in your industry. If the answer to your question isn’t thoroughly covered here, please contact the Clay & Bailey team. We look forward to assisting you with your project.
Email sales@claybailey.com to order any of our products.
Your credit card will not be charged until your items are ready to ship. We will send you an email notification of the charge.
We accept VISA, Mastercard, Discovery, and American Express.
Yes, for in stock items, we can offer same-day shipping for a $100 fee. Call us at (800) 821-6583 to determine if your item is in stock.
All returns require our written permission. When permission to return materials is granted, all transportation charges are to be prepaid and a normal 25% handling charge will be assumed by the customer. Credit will be issued based on purchase price. All material must be in first-class salable condition, and credits will reflect a deduction for any original freight allowance. In special cases, we reserve the right to increase the percentage of handling charges. We do not purchase surplus inventories.
Clay & Bailey products have a one-year warranty from the invoice date. Get our complete warranty here.
Yes, upon credit approval, we will invoice upon request for any orders totaling $50 net or more.
Yes. AST and UST products are available on our storage tank products page, which covers all energy industry components, including those used for tank safety, access, and more.
Our primary manufacturing expertise is in 319 aluminum, which is cast in our in-house foundry.
Get our complete price list and literature here. Spec sheets are included on the product page for each individual component.
Specific product listings include installation instructions: anodes, overfill prevention valves. Download these instructions by clicking one of the links above, or by visiting the Storage Tank Line products page and selecting the product.
We manufacture for the petroleum industry, including oil fields, businesses that require an uninterrupted power supply, Department of Transportation (DOT) fuel transports, municipal utilities, agriculture, and more. However, our capabilities lend themselves to much more. If your industry requires custom product development, contact Clay & Bailey.
Clay & Bailey’s state-of-the-art machining, fabrication, and casting technology offers product development for a wide range of clients and industries. View our custom product development services to learn more about how we can design and build high-quality components for your industry.
Yes, our Kansas City, Missouri foundry can accommodate your custom aluminum castings.
An overfill prevention valve (OPV) is a mechanical safety device installed inside the fill pipe of an aboveground storage tank (AST) or underground storage tank (UST) that automatically stops product flow as the tank approaches capacity and shuts off completely before overfill.
The valve relies on a float to stop product flow. As liquid rises, the float lifts a poppet into the flow path, slowing the product (typically fuel) to a trickle and signaling personnel to stop the pump. If they don’t catch this signal, the valve closes fully, catching the product in the delivery hose before it overflows.
OPVs are a common method of meeting overfill prevention requirements under EPA 40 CFR 280.20(c), EPA 40 CFR 112.8(c)(8), NFPA 30, NFPA 30A, and PEI RP 600.
Electrical overfill protection systems use optic, thermistor, or float sensors wired to a control unit that automatically shuts down a pump or closes a motorized valve when liquid reaches a setpoint. They’re standard on equipment like tank truck loading racks and in bulk petroleum storage facilities, engineered to standards like IEC 61511 and API 2350.
For most storage tanks themselves, including generator day tanks, ASTs and USTs, agricultural and commercial bulk storage, a mechanical overfill prevention valve (OPV) is the primary line of defense. OPVs are float-driven, fail-safe, and operate without power, making them a reliable choice for backup-power applications and any tank where there may not be reliable electricity.
A complete overfill protection system uses several integrated components to prevent spills during product transfer. EPA regulations under 40 CFR Part 280 reference these elements as part of compliant AST and UST installations.
Manway size is determined by the tank’s purpose, access, and structure. For most aboveground and underground storage tanks, common sizes range from 16–40 inches in diameter.
A 24-inch manway is the standard for human entry, allowing a worker to enter and exit per OSHA requirements. Smaller 16- to 20-inch manways are used for inspection, sampling, and equipment access. Larger 30- to 40-inch manways accommodate equipment, mixers, and emergency exits. It’s an engineering best practice to ensure manway size is not too large relative to the size of the tank to prevent structural failure.
