Fabricated Stainless Steel Exhaust Heads
Exhaust heads for
up to 40% by weight of the units flow capacity

Fabricated exhaust head

150# RF ANSI flanged connections
2½" 1,000 280
3" 1,600 410
4" 2,700 700
5" 4,000 1,100
6" 6,000 1,700
8" 10,500 2,900
10" 16,000 4,500
12" 24,000 6,500
14" 34,000 8,800
16" 44,000 11,500
18" 52,000 14,500
20" 66,000 17,000
24" 94,000 26,000
30" 145,000 40,000
36" 210,000 55,000
42" 290,000 76,000
48" 375,000 99,000
2" 2EHS
2½" 2.5EHS
3" 3EHS
4" 4EHS
5" 5EHS
6" 6EHS
8" 8EHS
10" 10EHS
12" 12EHS
14" 14EHS
16" 16EHS
18" 18EHS
20" 20EHS
24" 24EHS
Wright-Austin custom fabricated 304 stainless steel exhaust heads eliminate visible condensate plumes and help to recover expensive boiler chemicals or other reagents. All internals are made of 304 stainless steel (316 stainless steel internals would be an approximate cost adder of 15-20%).  ASME Code Stamps and CRN are not applicable because exhaust heads are not pressure vessels. The lead time for fabricated 304SS exhaust heads is typically 8-12 weeks. If lead time is critical, please contact our office and obtain a lead-time estimate based upon the current manufacturing backlog. 


How to Size an Exhaust Head

When sizing an exhaust head, the pressure that is used to size it should always be Atmospheric (14.7 PSIA), no matter what the application pressure is. The flow rate is the determining factor.

To calculate the pressure drop through an exhaust head, simply follow the equation stated on the Air Sizing Chart or Steam Sizing Chart. The pressure always stays the same since there is no back pressure; the rated pressure drop (obtained from the right side of the sizing charts) always remains the same. (0.9 PSI).

The difference between PSIG and PSIA is the “measured” pressure is the difference between the unknown pressure and the atmospheric pressure. This difference is referred to as the gauge pressure (PSIG), whereas the true pressure, called absolute pressure (PSIA) includes atmospheric pressure. To obtain operating pressures in PSIA add 14.7 to gauge pressure PSIG.

Click on the part number to open the corresponding outline drawing.    For alloy materials and temperatures over 650 deg. F, you should contact us. If you need assistance with proper selection, please fill-out our inquiry form. (316 stainless steel available for approximately 15% additional cost).