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Free Floating Lever Air/Gas Vents

Free Floating Lever Air/Gas Vents

Free Floating Lever Air/Gas Vents

Product catalog summary
Overview: This document provides technical specifications and performance data for Armstrong International's forged steel air/gas vents, specifically models 32-AV, 33-AV, and 36-AV. These vents are designed for high air/gas venting capacity applications up to 1,000 psi.
Specifications:
  • Materials: The vents are constructed with stainless steel valves and seats, ASTM A105 forged steel bodies, and non-asbestos gaskets. Bolting is done with ASTM A193 Gr. B7 bolts and ASTM A194 Gr. 2H nuts.
  • Connections: Available with screwed, socket-weld, or flanged connections.
  • Pressure Ratings: Maximum allowable pressure is 1,000 psig at 100°F and 600 psi at 750°F.
Physical Data:
  • Model 32-AV: Pipe sizes 1/2, 3/4, 1 inch; weight 31 lb (14 kg).
  • Model 33-AV: Pipe sizes 3/4, 1 inch; weight 49 lb (22 kg).
  • Model 36-AV: Pipe sizes 1-1/2, 2 inches; weight 163 lb (74 kg).
Performance Considerations:
  • High-Temperature Service: Maximum allowable working pressures decrease with temperature increases above 100°F, with a 10% decrease at 200°F, 15% at 300°F, and 20% at 400°F.
  • Sour Gas Service: Modifications for hydrogen sulfide stress corrosion resistance are available, which reduce the maximum working pressure of the float.
Operating Pressures: The document provides detailed tables of maximum operating pressures for different specific gravities and orifice sizes for each model. For example, the 32-AV model can handle up to 600 psi with a specific gravity of 1.00 and a 5/64 inch orifice size.
Recommendations: For applications involving high temperatures or specific requirements, consulting with Armstrong Application Engineering is advised to ensure optimal performance and safety.
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Catalog excerpts

Free Floating Lever Air/Gas Vents-1

Free Floating Lever Air/Gas Vents—Forged Steel For Pressures to 1,000 psig (69 bar) or Specific Gravity Down to 0.40 A 32-AV, 33-AV and 36-AV—Forged steel vents using the same proven free floating lever mechanisms used in Armstrong steam traps. For applications where high air/gas venting capacity is required up to 1,000 psi. Available with screwed, socketweld or flanged connections. For a fully detailed certified drawing, refer to CD #1035. List of Materials Model No. 32-AV 33-AV 36-AV Valve & Seat Leverage System ASTM A105 Forged Steel Stainless Steel Bolts ASTM A193 Gr. B7 Nuts ASTM A194 Gr. 2H Physical Data Pipe Connections “A” “B” “D” “K” “L” Approx. Wt. lb (kg) Max. Allow. Pressure (Vessel Design) †Available in Type 316 SS. Consult factory. Pipe size of side connections if provided is same as that of inlet and outlet connections. Some floats are oil filled. Consult factory for details. Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information. North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim armstronginternational.com

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Free Floating Lever Air/Gas Vents-2

Free Floating Lever Air/Gas Vents—Forged Steel For Pressures to 1,000 psig (69 bar) or Specific Gravity Down to 0.40 High-Temperature Service Maximum allowable working pressures of floats decrease at temperatures above 100°F. Allow for approximately: • 10% decrease at 200°F • 15% decrease at 300°F • 20% decrease at 400°F The float is not always the limiting factor, however. Consult with Armstrong Application Engineering if you have a high-temperature application that also requires maximum operating pressures. Forged steel and stainless steel traps can be modified to resist hydrogen sulfide stress...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.