Armstrong 9000 Series Conditioned-Steam Showers are designed to create a stratum of high humidity in close proximity to a fast-moving sheet or film. The objective may be to prevent the accumulation of troublesome static electricity, or the shower may be used to prevent the loss of moisture from the sheet or film.

If the sheet or film is hot, as it very likely may be, it tends to give up its moisture very quickly. A properly sized and installed steam shower creates a laminar zone of high humidity adjacent to the sheet or film, preventing this loss to maintain the desired moisture content. In virtually all applications, it is essential that the steam be discharged in a "dry" state—that is, with no water droplets or liquid spray. The unique design of Armstrong Steam Showers assures this dry discharge.

Separator-control units are identical in design and operation to equivalent humidifier models. The distribution manifolds have been especially modified to operate under slight pressure to meet the specific requirements of steam shower service. Electrically controlled and pneumatically controlled models are offered in two sizes.

Standard Package

The complete 9000 Series package includes the following components:

• Steam shower with integral operator.
• Distribution manifold.
• "Y" type strainer.
• Armstrong inverted bucket steam trap.
• Temperature switch to prevent the humidifier from operating before cold startup condensate is drained. (Cannot be incorporated on manually controlled steam showers.)

Maintenance Accessibility

Steam humidifiers (or other products) should be installed in locations that allow routine inspection and accessibility for maintenance operations. Armstrong recommends that steam humidifiers not be placed in locations where unusual instances of malfunction of the humidifiers or the systems might cause damage to nonrepairable, unreplaceable, or priceless property.

Selection and Installation Notes

• Pressure Limits: Armstrong Steam Showers are suitable for pressures up to 60 psig. Lower steam pressures (2 to 10 psig) are recommended for normal installations.
• Sizing: 91 size units are adequate for most showers up to a six-foot span. 92 size showers should be used for longer spans or where larger volumes of steam are desired at very low pressures.
• Positioning: Most commonly, the dispersion manifold is installed 6" to 8" from the object of the shower—no more than 12".
• Control: A pressure-reducing valve should be installed in the steam supply to control the maximum volume of steam to the shower.
• Dimensions: Dimensions are the same as for corresponding humidifier models.

Physical Data and Capacities

Model No.	Control Type	Shipping Wt. (lbs)*	Inlet & Strainer Size	Drain Connection Size	Drain Trap No.	Trap Connection Size
DSA-91-SM	Electrical	26	1/2"	1"	800	3/4"
DSA-92-SM	Electrical	33	3/4"	1"	800	3/4"
AM-91-SM	Pneumatic	32	1/2"	1"	800	3/4"
AM-92-SM	Pneumatic	38	3/4"	1"	800	3/4"

*Weight less manifold. Full nomenclature includes the length of the manifold in feet as a suffix to the Model No. 120V/60Hz is standard for electrical models; other voltages available.

Manifold Lengths and Weights

Manifold Model No.	Length (Inches)	Shipping Wt. (91 size, lbs)	Shipping Wt. (92 size, lbs)
SM-1	12	3	6
SM-1.5	18	4	7
SM-2	24	5	8
SM-3	36	6	11
SM-4	48	8	13
SM-5	60	10	15
SM-6	72	11	17
SM-7	84	—	20
SM-8	96	—	23
SM-9	108	—	25
SM-10	120	—	27
SM-11	132	—	29
SM-12	144	—	31

Connection Specifications (9000 Series)

Series Model	Inlet Size (NPT)	Drain Size (NPT)	Trap Connection Size (NPT)
9090	1/2"	1"	1/2"
9091	1/2"	1"	3/4"
9092	3/4"	1"	3/4"
9093	1-1/4"	1-1/4"	3/4"
9094	2"	2"	3/4"