Check the listing for details. Replacement for F93B-1C Air Volume Control for Deep Wells and Water Tank System. Condition: New. Listed at 33.90 USD. Replace for F93B-1C Air Volume Control for Deep Wells and Water Tank System, for tank at least 9" diameter, with 1/4" Tap 【Control Air Volume】This air volume control is designed to control the amount of air in the residential storage tank of a deep well water system, help keep the air and water volume at a balanced level while using deep well pumps. Suitable for deep wells over 25 feet (7.6 m) in depth. The control has a 1/4" gauge tap for installing pressure gauge to test the inner pressure, main body thread 1-1/4" pipe. Replacement for #F93B-1C. 【How To Work】Generally, when the tank level drops/airflow increases, the control opens the bleed valve, releasing excess air inside the tank with up to 100 psig (690 kPa), automatically maintaining the amount of air inside the tank of the deep well water system. Also, to avoid excessive air release, the control is designed with a minimum pressure relief valve to prevent the air pressure inside the tank from falling below 25 psig (172 kPa). 【Anti-Corrosion & High Pressure Resistance】Made of premium material for durability and high performance. Hard brass internal components and connecting rod for greater corrosion resistance and rust resistance. Durable plastic housing, anti-wear, accurate size and specification, suitable for your deep well and water tank system. The red plastic float is pressure tested, long lifespan. 【Easy Installation】Use thread sealing tape to wrap the 1-1/4" NPT thread on the control, overlap the tape by half its width to form two layers, and continue to where the thread ends at the large end. Use a wrench to screw the control into the tank opening located at approximately 2/3 of the way up. Please NOTICE!!! that the tank must be at least 9 inches (229 mm) in diameter to allow room for float operation before purchasing. 【100% Satisfaction Guarantee】We aims to provide you the best products and services. We support 30 days returns and 12 months warranty. Please feel free to contact us if you have any question. CONTACT US: If you meet any problem after receiving our product, please feel free to contact us. We will try our best to solve your problem. SHIPPING POLICY: Orders will be ship out within 1-2 business days after payment has cleared. Orders from Saturdays, Sundays or holidays will process on next business day and will be ship within 24 hours. Please allow 10-30 days for international deliveries. Some shipments could take longer subject to your local customs authorities. RETURE & WARRANTY: 1 We accept 30 days return guarantee for all Items If you are unsatisfied with something you bought from us, you may send it back within 30 days of receipt, and we shall be happy to exchange or refund. 2 Leave a message note in returned box quoting your item(s) ID and buyer ID. 3 All returned products must be in their original condition and packaging. Unfortunately, if products have been assembled or modified, we cannot take them as returns. 4 It is important that we know when your return is expected. Please save your return tracking number or post receipt, and email it to us. We need this in case there are any issues during transit. 5 Refund will only be issued upon our receipt of the returned parcel. Please allow 2 working days for us to process with your return. ABOUT REPLY: If you have any questions, please feel free to email our service specialists 24 Hours a Day, 7 Days a Week, and we will reply you ASAP. If no response within 24 Hours, please check the spam of mail box or kindly re-send it to us. ABOUT FEEDBACK: Please contact us before leaving Netural or Negative feedback if you are not satisfied our service or products. Good communication is helpful for both of us to resolve any problems and issues. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. If you are satisfied with our service, please kindly leave us a 5-star feedback. Thanks💖!