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

Wright Austin custom fabricated 316SS exhaust heads eliminate visible condensate plumes and help to recover expensive boiler chemicals or other reagents. Following are links to the Wright Austin outline drawing and the pricing table.  The lead time for fabricated 316SS exhaust heads is typically 6-8 weeks. If the lead time is critical, please contact our office and obtain a lead-time estimate based upon the current manufacturing backlog.  If you need assistance with proper selection, please fill-out our inquiry form.

  

Sizing Chart	CONNECTION	SIZE	PART NUMBER	PRICE EACH
	150 # RF ANSI flanged	2"	2EHS	$5,419.00
		2½"	2.5EHS	$5,502.00
		3"	3EHS	$5,581.00
		4"	4EHS	$7,662.00
		5"	5EHS	$9,103.00
		6"	6EHS	$10,095.00
		8"	8EHS	$14,183.00
		10"	10EHS	$17,207.00
		12"	12EHS	$20,972.00
		14"	14EHS	$27,323.00
		16"	16EHS	$33,203.00
		18"	18EHS	$43,062.00
		20"	20EHS	$55,110.00
		24"	24EHS	$65,460.00

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.

Review the catalog cut-sheet and select a separator that exceeds the flow rate given. For example; if  you have 1,200 lbs/hour steam, pick the separator that has the capacity to handle this flow rate. In this instance you should select the 3” size (1,600 lbs/hr).

 

Here is another example: An operating temperature (ex. 100 deg. F), the media (ex. Saturated steam), the flow rate (ex. 4,500 pounds/hr.) and the operating pressure (ex. 20 psig). Ignore the operating pressure and instead use 14.7 psia for sizing the exhaust head (refer to the sizing chart). Both charts have a horizontal dotted line marked “Atmospheric (14.7)”, use that line for the pressure.

 

Exhaust heads are vented to the atmosphere; they cannot contain any pressure. Regardless of the pressure at the inlet, the separator is always at 14.7 psi. To calculate the pressure drop through an exhaust head, simply follow the equation stated on the sizing charts. The pressure always stays the same, so the rated pressure drop (obtained from the right side of the sizing charts) always remains the same. (0.9 psi).

 

Note 1: 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.

 

Note 2: Cast iron and fabricated exhaust heads have different dimensions and therefore different capacity ratings for equivalant connection sizes.

 

Note 3: For alloy materials and temperatures over 650 deg. F, you should contact us.