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02/13/2003 16:50 19163729894 SHIELD. NAPREP E co. PAGE 05 -30,DPW 61 SO OVERFILL PREVENTION VALVES The OP'N 51SC CverSil preVenticn Valve is designed to orevent the overfill of underground storage tanks by providing a positive shut-ofl of product delivery.The shut-off valve s an integral part of the drop tube used for gravity idling.The OPW 61 SO allows easy installation(without breaking concrete)and requires no special manholes. The OPW 6150 s a two-stage shut-ort valve. When the liquid;evej rises to about 9511 of tank capacity, the valve mecnan sm s released, ciosing automatically with the ,low.This reduces the Flow rate to approximately 5 opm through a bypass valve The ooemicr may'hen stoo`.fie illirg :recess and disconnect and drain:he deiivery rose.As song as :he,igwc exceeds the 95%levet, the valve will close automatically each time delivery is attempted. If the delivery is not stopped and the liquid rises to about 981,10 of tank capacih/, the typass valve closes coVeteiy.No additionai liquid can flow into the tank until the level drops below a reset point. Models of the 61SO are available to meet virtually any UST application including two-point, coaxial,Poopeted coaxial and remote fill. The 81SO-3000 provides Iwo-point overfill protection for 3"riser pipes,and the 61SO-1000 and 61SO-100C(CARS)feature a grooved-tube design for use with tank gauging systems. Methanol and CARS(vapor-tight)approved models are also available. The OPW 61 SO is approved by the New York City Fire Department. (Approval#4902) IMPORTANT In order to prevent product spillage from the Underground Storage Tank(UST),properly maintained delivery equipment and a proper connection at the tight-MI adaptor are essential. Delivery personnel should be managed and trained to inspect delivery elbows and hoses for damaged and missing pans.They should always make certain there is a positive connection between the adaptor and elbow.If delivery equipment is not property maintained,or the elbow is not securely coupled to the adaptor, a serious spill may result when the OPW 61SO closes,causing a hazard and environmental contamination. NOTE: The OPW 61SO is designed for use on tight-fill gravity drop applications only. Do not use for pressure fill applications. Features: • Simple,Easy and Quick Installation- ♦ No Pressurization of The Tank- Certifications AY City Fire No excavation or special manholes Operates directly from liquid level, and Listings CARR Department required. •Will Accept a Di Gauging.p petiole for Gau 'n 61S0 Series Initial Approval •Economical•Costs a fraction of • Retrofits Directly-For both new and Certifir.21lon 44902 expensive,complicated and difficult existing tanks with 3'or 4'fill risers, Letter Oct 83 to install valves, OpdaW Approval • Quick Drain Feature-Automatically •Fumishod Complete-Supplied with drains Dose when head pressure is Latter 19744 _ new upper and lower drop tubes, relieved StSoFt Aoprovaf mounting hardware and thorough letterago-5 insfructions for quick job site time. *Best Flow Rate in The Industry.' •Compile"Automatic Approvalmatic Operation•No letter 492.8 prechecks to perform,no resets,and no 'rest witnessed by Bowser-tomer,Inc.,an — overrides to be broken or abused. independent laboratory. Results available upon realest. Advantages of Overfill Prevention Materials Compaired to Overfill Warning Systems. Valve body:cast aluminum •Completely Automatic Operation- ♦Speeds Delivery Operations- Float:nttriie rubber,closed cell foam Does not rely on the alertness or speed Product flows unimpeded into the tank Valve:aluminum of response of the delivery attendant, until the hose"kick'that accompanies Seals:niton for certainty of overfill prevention, the valve shut-off provides a clear Upper&lower Drop Tube:aluminum ♦Keeps the Top of LIST"Dry,"per signal that the liquid has reached the Plastic parts:acetal EPA Requlremenfs-Eruninating shut-off level, Hardware:stainless steei possible leaks at loose bung fitUrgs • Simple and Inexpensive Instaltation- and the need for double containment In both two-point and coaxial fill on vent lines. applications,no additional excavation, ♦Does Not Rely on Pressure in the manholes or vent piping are required. UST to Stop Flow-Allowing faster fill tines and reducing spill risk.