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Home > Products > PK-A & PK-AD
Seiho's compact Model PK-AD and PK-A Aluminum Wall/Ceiling SpotDiffusers are specially designed for a flush flange mounting to wall and ceiling construction within air shower systems. The flush-mount nozzles offer efficient use of space within the air shower chamber while providing complete directional adjustability for operational flexibility. The nozzles are arranged on walls and ceilings in a uniform pattern to ensure effective distribution of filtered air. The PK-AD features directional air stream control and precision air flow adjustment, whereas the PK-A is capable of directional control only. The heavy-gauge anodized aluminum is corrosion-resistant for years of service. The finished aluminum integrates seamlessly with various types of air shower systems.
Material
 Aluminum
Finish
 Anodized (Custom Colors Available)
Sizes
 3" 4"
 PK-A/PK-AD Download
 Catalog
 Submittal Sheet
 PK-A (Inch / Metric)
 PK-AD (Inch / Metric)
 Performance Data (Inch / Metric)
 High Resolution Picture

Features

Construction
 The SEIHO Model PK-A and PK-AD Air Shower Nozzles are manufactured from heavy-gauge aluminum. The overall heavy-duty construction exceeds industry standards by a wide margin. The multi-directional louver body and all other components are machined to close tolerances from solid aluminum alloys, then bright polished. The flange-to-body gasket consists of two tandem felt strips for a leak-proof seal. These components comprise a unit which provides smooth movement of the louver body when adjusting its direction. The flange mounting gasket is closed-cell neoprene or felt, depending on unit size. A knurled aluminum thumb-operated airflow adjustment knob facilitates control of airflow by regulating the volume out of the exit nozzle with the precision internal damper. The internal damper is under tension by a stainless steel spring for sealing and quiet operation.

Design
 SEIHOfs Model PK-R and PK-RA pivoting body can be rotated in any 3-dimensional direction around its internal center.

 Maximum rotation angle up to 33 to 41 degree in all direction from its center axis.


Model PK-RA Dimensions (PDF Version)

MODEL PK SIZE A B C D E F G H J
PK 3AD PK 3A PK3 4 5/16 2 15/16 6 3/16 3 7/32 21/32 2 3/16 1 1/2 2 27/32 5 19/32
PK 4AD PK 4A PK4 5 5/16 3 15/16 7 9/32 4 7/32 15/16 2 3/4 1 31/32 3 11/16 6 11/16
Dimensions are in inches. Product information is Subject to Change Without Notice


Performance Data (PDF Version)

SIZE Approx.Nozzle
Velocity
500 1000 1500 2000 2500 3000 3500 4000
Terminal
Velocity, Vt
50 100 200 400 50 100 200 400 50 100 200 400 50 100 200 400 50 100 200 400 50 100 200 400 50 100 200 400 50 100 200 400
3 Nozzle Area
0.012
sq.ft.
CFM 5 10 15 20 25 35 40 45
SP(in.,wg) 0.01 0.03 0.09 0.19 0.31 0.75 0.82 1.10
NC - - - < 20 < 20 21 23 25
Throw(ft.) 7 5 2 - 12 7 3 - 18 9 6 2 25 12 7 3 31 15 8 4 50 25 12 6 55 27 13 7 60 30 15 8
4 Nozzle Area
0.021
sq.ft.
CFM 10 20 30 40 50 60 70 80
SP(in.,wg) 0.01 0.05 0.14 0.25 0.39 0.56 0.80 1.05
NC - - < 20 < 20 21 24 28 32
Throw(ft.) 9 6 3 - 18 10 5 - 27 14 7 3 36 18 9 5 44 23 12 6 53 28 14 7 65 32 16 8 75 37 18 9
DASHED LINE IN NC BOX INDICATES NOISE LEVEL IS LESS THAN 20.
NC LEVEL IS BASED ON 10dB ROOM ATTENUATION(PWL RE:10-12 WATTS) WITH ONE DIFFUSER OPERATING.

*Seiho International reserves the right to make changes without prior notice.
*This performance data is proprietary to Seiho International, Inc., and shall not be used except as expressly authorized by the company.


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