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Home > Products > PK-K
Seiho's popular SpotDiffuser is now available with the Condensation Control Air Guide - PK-K! The PK-K's Air Guide is designed to lead the air to the diffuser's outer surface, and help reduce the area where condensation may occur. The Air Guide is made of low thermal conductance material with the dual airflow design (Patent Pending). The PK-K is virtually condensation-free and is perfect for high humidity areas such as gyms, kitchens and food processing facilities.

Material
 SpotDiffuser: Heavy-Gauge Anodized Aluminum
 Air Guide: ABS Resin
Finish
 SpotDiffuser: Anodized
 Air Guide: Gray
 (Custom Colors Available)
Sizes
 6" (Coming Soon), 8", 10", 12", 12"WIDE, 16", 20"
Applications
Kitchens
Restaurants
Sports Facilities
Food Processing
Ships
Laundry Facilities
Chemical Manufacturing
Coastal Projects

 PK-K Download
 Catalog
 Submittal Sheet (Inch / Metric)
 Performance Data (Inch / Metric)
 Revit Files
 High Resolution Picture

Features


Condensation Performance Chart
The Condensation Performance Chart illustrates the condensation threshold for Models PK8K through PK16K. No condensation occurs at any point below the curves. The test data is based on 1920 fpm neck velocity.

At Room Temperature 79 degrees F and supply air temperature 57 degrees F, For Standard PK Models: Condensation occurs when the relative humidity exceeds 53%. For Anti-condensation PK-K Models: Condensation does not occur until the relative humidity reaches 65%.

(PK20K Drip TestÅj
As for Model PK20K, at neck velocity 985 fpm, condensation occurs under the following conditions:
- Room Temperature: 79 degrees F
- Supply Air Temperature: 57 degrees F
- Relative Humidity: 65% (Dew Point: 66 degrees F)

However, no drip is observed after a prolonged period of 24 hours. At neck velocity 1575 fpm, no drip is observed for 6 hours.
Condensation Testing
 Size: #10
 Room Temperature: 79F
 Supply Air Temperature: 52F
 Relative Humidity: 57%
 Dew Point: 62F
 Neck Velocity: 2000FP


 SpotDiffuser with Condensation Control Air Guide

 SpotDiffuser without Condensation Control Air Guide

PK-K Airflow Smoke Pattern Test


Model PK-K Dimensions (PDF Version)

MODEL DUCT SIZE PK SIZE A B C D E F G H
PK 6K 6 5/16 PK 6 6 25/32 5 29/32 7 15/32 6 7/32 1 1/2 4 7/32 2 5/32 5 23/32
PK 8K 8 3/16 PK 8 9 1/8 7 7/8 9 27/32 8 1/32 1 23/32 5 3/8 3 7 1/8
PK10K 11 1/32 PK10 11 31/32 10 1/2 12 3/4 10 7/8 1 23/32 7 1/4 4 9/16 9 7/32
PK12K 12 17/32 PK12 13 15/32 12 14 9/32 12 3/8 2 15/32 8 1/2 5 1/8 10 31/32
PK12WK 12 17/32 PK12 WIDE 13 15/32 12 14 9/32 12 3/8 2 15/32 8 1/16 6 9/32 10 7/16
PK16K 16 23/32 PK16 17 3/4 16 5/32 18 1/2 16 1/2 3 5/8 10 7/8 7 1/4 14 1/2
PK20K 19 1/8 PK20 20 1/8 18 1/2 21 1/16 18 27/32 3 3/4 13 5/32 9 21/32 16 29/32
PK6K: Coming Soon
Dimensions are in inches. Product information is Subject to Change Without Notice


Performance Data (PDF Version)

SIZE Nozzle Area Nozzle Velocity (fpm) 400 600 800 1000 1200 1400 1600 1800 2000
PK8K Dia. 2.99in

0.0484sq.ft.
CFM 27 41 56 71 85 100 115 130 144
Ps 0.01 0.02 0.04 0.06 0.10 0.13 0.17 0.22 0.27
Throw (Vt=@100fpm) 5 8 10 12 15 18 20 23 26
Throw (Vt=@50fpm) 8 12 16 20 24 29 33 37 41
NC - - - - 21.2 27.5 32.7 37.1 40.8
PK10K Dia. 4.528in

0.112sq.ft.
CFM 59 89 118 148 177 207 236 266 295
Ps 0.01 0.02 0.04 0.06 0.09 0.12 0.16 0.20 0.25
Throw (Vt=@100fpm) 7 11 15 18 22 26 31 34 39
Throw (Vt=@50fpm) 12 17 24 30 36 42 48 55 62
NC - - - - 19.3 25.0 30.3 34.4 37.9
PK12K Dia. 5.315in

0.154sq.ft.
CFM 77 118 159 200 241 283 324 365 406
Ps 0.01 0.02 0.04 0.06 0.09 0.12 0.16 0.21 0.26
Throw (Vt=@100fpm) 9 13 17 22 26 31 36 40 45
Throw (Vt=@50fpm) 14 20 27 35 41 49 57 64 72
NC - - - - 19.5 24.9 30.2 34.3 38.1
PK12WK Dia. 6.102in

0.203sq.ft.
CFM 100 153 206 259 312 365 418 471 524
Ps 0.01 0.02 0.04 0.06 0.09 0.12 0.16 0.20 0.25
Throw (Vt=@100fpm) 10 15 20 25 30 36 41 46 51
Throw (Vt=@50fpm) 16 24 32 40 48 57 66 74 82
NC - - - - 21.3 27.4 32.3 36.0 39.1
PK16K Dia. 7.32in

0.292sq.ft.
CFM 153 236 318 401 483 565 648 730 813
Ps 0.01 0.02 0.03 0.05 0.08 0.11 0.14 0.18 0.22
Throw (Vt=@100fpm) 11 17 22 28 33 40 46 51 56
Throw (Vt=@50fpm) 18 28 36 45 54 64 73 82 91
NC - - - 18.2 25.4 31.6 36.1 39.9 43.4
PK20K Dia. 9.65in

0.507sq.ft.
CFM 253 386 518 650 783 915 1048 1180 1313
Ps 0.01 0.02 0.03 0.05 0.08 0.11 0.14 0.17 0.21
Throw (Vt=@100fpm) 13 20 27 33 40 47 53 60 66
Throw (Vt=@50fpm) 21 32 43 53 64 74 85 95 106
NC - - - 18.7 25.8 32.0 36.5 40.4 43.9
DASHED LINE IN NC BOX INDICATES NOISE LEVEL IS LESS THAN 20.

*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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