HO/HOV SERIES DESCRIPTION Fike’s HO Rupture Disc is a composite disc consisting of two components, the seal member and a slotted top. In this conguration the slotted top section contains the seal and the seal transmits the pressure load to the top section. The slotted top section controls the burst pressure of the disc and allows the use of uoropolymer as a seal member. In addition to the typical seal materials available, tantalum, titanium or other precious metals may be used when dealing with corrosive media. The HOV Rupture Disc (high operating and vacuum) is constructed the same as the HO Disc with the addition of a vacuum support under the seal member. The HO/HOV is commonly manufactured with a 316 stainless steel top section and vacuum support with an FEP uoropolymer seal member for temperatures up to 400°F (204°C). Alternate seal materials are available, see table on the following page for burst pressure ranges per size and seal material. Alternate top section and vacuum support materials are available as well, such as Nickel, Monel, Hastelloy, Inconel and Tantalum. HOV Disc with Fluoropolymer Seal FEATURES AND BENEFITS • Can operate up to 80% of its marked burst pressure • Conguration requires a smaller amount of precious metal due to the top section controlling the burst pressure • Operates in both gas and liquid applications ACCESSORIES AND HOLDERS HO/HOV Rupture Discs are designed for installation in anges which utilize the standard 30° angular seating arrangement. The HO/HOV utilizes the bolt-type or union-type holders. For more information on the bolt-type holders, please see data sheet R.1.18.01 and for union-type holders please see data sheet R.1.09.01. OPTIONS • Available with PFA uoropolymer liner with a maximum temperature of 500°F (260°C) • Polyurethane 250°F (121°C) and Teon 450°F (232°C) protective coatings also available • Alternate top section and vacuum support materials such as Nickel, Monel, Hastelloy, Inconel and Tantalum • Various seal materials (see following page) for temperatures >500°F (260°C) and burst pressures than acceptable for the standard uoropolymer seal Form No. R.1.22.01-5 704 S.W. 10th Street · P.O. Box 610 · Blue Springs, Missouri 64013-0610 U.S.A. · (816) 229-3405 · www.fike.com

AVAILABLE MANUFACTURING RANGES Specied Rupture Pressure Manufacturing Range % @ 72°F (22°C) PSIG @ 72°F BARG @ 22°C <4 < .3 zero 4 to 8 .3 to .6 +40 to -40 9 to 12 .7 to .8 +30 to -30 13 to 20 .9 to 1.4 +20 to -10 21 to 45 1.5 to 3.1 +16 to -8 46 to 90 3.2 to 6.2 +12 to -6 91 to 270 6.3 to 18.6 +10 to -5 271+ 18.7+ +6 to -3 BURST/PERFORMANCE TOLERANCE Marked Burst Pressure PSIG Tolerance BARG PSIG BARG <5 < .35 ±1 .07 5 - 14.99 .35 - 1.03 ±1.5 .10 15 - 40 1.04 - 2.76 ±2 .14 > 40 > 2.76 ±5% ±5% Note: • Other burst/performance tolerances are available. Please consult factory. HOW TO SPECIFY Previous...

Performance Attributes Process Media Rupture Disc Holder Operating Ratio Vacuum Resistant Pulsating/ Cyclic Liquid Vapor / Gas Bolted Type Union Type 80% yes yes yes yes yes yes CERTIFICATIONS UD ASME Authorized Specify When Ordering 0036 R Copyright © Fike Corporation All Rights Reserved. Form No. R.1.22.01-5 October, 2011 Specications are subject to change without notice.