1 / 16

Suction Diffusers - Northam Inc.

Northam Suction Diffusers provide compact, in-line pump protection by combining a strainer, flow stabilizer, and elbow into one unit. They reduce turbulence, capture debris with stainless steel strainers, and simplify installation for HVAC, water, and industrial systems.

northaminc
Télécharger la présentation

Suction Diffusers - Northam Inc.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NG-D SERIES SUCTION DIFFUSERS PRODUCT CATALOGUE www.northam-inc.com

  2. This page is intentionally left blank.

  3. NG-D SERIES SUCTION DIFFUSERS CONTENTS 4 6 6 7 8 9 General Data Design Features Material of Construction Model Code Order Information Typical Installation Pressure vs Temperature Ratings Pressure Drop Chart Dimensions 10 11 12 3 Date - 09/04/25 Supersedes - 06/03/25

  4. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" GENERAL DATA ANSI 125 / ANSI 250 PREFACE The NORTHAM Suction Diffuser NG-D series is a device which directly mounts to the suction side of horizontal or vertical centrifugal pumps. It is designed to reduce space and installation cost by replacing a conventional 90° elbow, 'Y' or basket strainer and long flow stabilizing piping on the suction side of the pump. It may also be used as a reducing elbow, should the suction piping be larger than the pump inlet. The suction diffuser consists of a start-up strainer (removable fine mesh filter), permanent strainer, guide vane, body, body cover and drain plug. The suction strainer helps to remove foreign objects and debris that may be hazardous to the pump or other system components, while providing the proper flow conditions to the pump. The water flow is passed through an in-built strainer to remove suspended solids and then guided to the pump suction through flow stabilizing guide vane. Guide vanes reduces turbulence and resulting stress and vibration. Fine mesh filter is provided to prevent seal failure and instrumentation damage during commissioning. FEATURES It's multi functional design saves space and installation costs by incorporating all conventional devices into a single device solution. 90° ELBOW Direct mounting to the suction flange of any pump allows the piping to turn 90°. This feature replaces a conventional elbow. In addition, suction diffuser can be mounted on a pump suction flange either in horizontal or in vertical position. IN-LINE STRAINER The in-line strainer is divided into a outer cylindrical start-up strainer and a star-shaped permanent strainer. The start-up strainer is a fine mesh strainer which helps in removing unwanted metal and other foreign particles or objects when the pump is first started. This startup strainer is made out of galvanized steel and it is preferable to remove it after the first 15 days of service. The permanent strainer is made out of 0.11 inch perforated 304 stainless steel sheet metal. It will protect the pump against metallic or other foreign particles and objects during the entire service life of the pump. The design of this strainer provide a large free flow area to reduce pressure drop. This feature replaces a conventional 'Y' or basket strainer. GUIDE VANES Flow stabilizing vanes on the outlet of suction diffuser allow the suction diffuser to bolt directly to the pump. This feature saves space and also reduces cost of a conventional long straight pipe. Integrally straightening guide vanes also reduces flow turbulence, thereby creating optimum flow conditions and minimize stress on pump components. REDUCING ELBOW The suction diffuser connects same size piping to the pump suction, but can also connect to inlet piping one size larger than the pump suction, eliminating a reducing elbow. Several models are available with inlet size one size larger then outlet. 4 Date - 09/04/25 Supersedes - 06/03/25

  5. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" GENERAL DATA ANSI 125 / ANSI 250 STANDARD FEATURES INCLUDE: ► Available in ANSI 125 & ANSI 250 as per ASME B16.1, with flanged connections. Flanges with PN 16 & PN 25 ► are also available as per DIN standard EN 1092-2. Grooved end flanged connections are available on request. ► Available with equal or reduced outlet flanges. ► Cast on supporting pads for convenient mounting of standard I.D support foot. ► Drain/purge plug is used to drain the suction diffuser when required. It has an in-built magnet to trap small ► metallic particles. ► Available suction gauge port. ► 'O' ring seals body cover. ► Quick opening bolted body cover minimize down time while cleaning the strainer. APPLICATIONS ► HVAC system ► Water supply ► Pressure boosting systems ► Industrial applications ► Boiler feed and condensate transfer system. TECHNICAL DATA Connection size Pressure rating 2 inch to 14 inch 125 psi and 250 psi (16 bar and 25 bar) 5 Date - 09/04/25 Supersedes - 06/03/25

  6. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" DESIGN FEATURES ANSI 125 / ANSI 250 INLET FROM SYSTEM METERING PORT Port for gauge connection 'O' RING EPDM 'O' ring for body cover DIFFUSER BODY Robust construction. Cast iron for ANSI 125/PN 16 Ductile iron for ANSI 250/PN 25 START-UP STRAINER (DISPOSABLE) Galvanized fine mesh strainer which helps to protect the pump and in particular the mechanical seal during start-up GUIDE VANE 304 Stainless steel Guide vane which reduces flow turbulence & also reduces cost of conventional long suction pipe installation BODY COVER Ductile iron cover can be easily removed periodically to clean the strainer without dismantling the pipework OUTLET TO PUMP PERMANENT STRAINER 0.11 inch perforated 304 stainless steel, star-shaped strainer for protection of the pump against foreign particles and objects during the service life of the pump DRAIN PLUG It is used to drain the suction diffuser when required. It has an in-built magnet to trap small metallic particles BOSS For support pipe installation MATERIAL OF CONSTRUCTION Material Component ANSI 125/PN 16 Cast iron Ductile iron 304 Stainless steel Galvanized steel 304 Stainless steel EPDM ANSI 250/PN 25 Ductile iron Ductile iron 304 Stainless steel Galvanized steel 304 Stainless steel EPDM Diffuser body Body cover Permanent strainer (0.11 inch perforations) Start-up strainer (fine mesh) Guide vane (flow straightening vane) Body cover 'O' ring 6 Date - 09/04/25 Supersedes - 06/03/25

  7. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" MODEL CODE ANSI 125 / ANSI 250 A NG D 040 030 Pressure rating Code Class A B C D ANSI 125 (125 psi) ANSI 250 (250 psi) PN 16 (16 bar) PN 25 (25 bar) Pump connection size Size Code 020 025 030 040 050 060 080 100 120 140 14” (350 mm) 2” (50 mm) 2½” (65 mm) 3” (80 mm) 4” (100 mm) 5” (125 mm) 6” (150 mm) 8” (200 mm) 10” (250 mm) 12” (300 mm) System connection size Size Code 020 025 030 040 050 060 080 100 120 140 14” (350 mm) 2” (50 mm) 2½” (65 mm) 3” (80 mm) 4” (100 mm) 5” (125 mm) 6” (150 mm) 8” (200 mm) 10” (250 mm) 12” (300 mm) Product type Type Code D Suction diffuser Series name Code Series NG General product Example: NG-D-040-030-A = General product series, Suction diffuser, 4" System connection size, 3" Pump connection size, ANSI 125 Pressure rating. 7 Date - 09/04/25 Supersedes - 06/03/25

  8. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" ORDER INFORMATION ANSI 125 / ANSI 250 ORDER NO. / MODEL CODE ANSI 125 PUMP CONNECTION SIZE SYSTEM CONNECTION SIZE ANSI 250 2" 2½" 3" 2½" 3" 3" 4" 4" 5" 6" 5" 6" 6" 8" 8" 10" 10" 12" 12" 14" 2" 2" 2" 2½" 2½" 3" 3" 4" 4" 4" 5" 5" 6" 6" 8" 8" 10" 10" 12" 12" NG-D-020-020-A NG-D-025-020-A NG-D-030-020-A NG-D-025-025-A NG-D-030-025-A NG-D-030-030-A NG-D-040-030-A NG-D-040-040-A NG-D-050-040-A NG-D-060-040-A NG-D-050-050-A NG-D-060-050-A NG-D-060-060-A NG-D-080-060-A NG-D-080-080-A NG-D-100-080-A NG-D-100-100-A NG-D-120-100-A NG-D-120-120-A NG-D-140-120-A NG-D-020-020-B NG-D-025-020-B NG-D-030-020-B NG-D-025-025-B NG-D-030-025-B NG-D-030-030-B NG-D-040-030-B NG-D-040-040-B NG-D-050-040-B NG-D-060-040-B NG-D-050-050-B NG-D-060-050-B NG-D-060-060-B NG-D-080-060-B NG-D-080-080-B NG-D-100-080-B NG-D-100-100-B NG-D-120-100-B NG-D-120-120-B NG-D-140-120-B 8 Date - 09/04/25 Supersedes - 06/03/25

  9. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" TYPICAL INSTALLATION ANSI 125 / ANSI 250 Suction Diffuser Suction Diffuser END-SUCTION CLOSE COUPLED PUMP VERTICAL IN-LINE PUMP Suction Diffuser Suction Diffuser END-SUCTION LONG COUPLED PUMP HORIZONTAL SPLIT CASE PUMP 9 Date - 09/04/25 Supersedes - 06/03/25

  10. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" PRESSURE vs TEMPERATURE RATINGS ANSI 125 / ANSI 250 Temperature (°C) 149 10 38 66 93 121 350 24 Maximum total working pressure (bar) Maximum total working pressure (psi) 300 21 250 17 Class 250# in accordance with ANSI Standard B16.1 / Class PN 25 in accordance with DIN standard EN 1092-2 200 14 150 10 Class 125# in accordance with ANSI Standard B16.1 / Class PN 16 in accordance with DIN standard EN 1092-2 100 7 0 0 300 0 50 100 150 200 250 Temperature (°F) 10 Date - 09/04/25 Supersedes - 06/03/25

  11. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" PRESSURE DROP CHART ANSI 125 / ANSI 250 Flow (l/sec) 441.6 252.3 315.5 378.5 504.7 567.8 126.2 189.2 44.1 25.2 63.1 31.5 37.8 50.5 56.8 12.6 18.9 631 4.4 2.5 6.3 0.6 3.2 3.7 5.7 1.2 1.8 5 10 68.9 62.1 55.2 48.3 41.4 9 8 7 6 5 34.5 4 27.6 3 20.7 13.8 2 2½" x 2½", 3" x 2" 10" x 10", 12" x 8" 5" x 5", 6" x 4" 12" x 10" 2½" x 2" 2" x 1½" 6" x 6" 10" x 8" 2" x 2" 6" x 5" 12" x 12" 3" x 2½” 8" x 8" 4" x 4" 5" x 4" 8" x 6" 4" x 3" 3" x 3" Pressure drop (KPa) Pressure drop (psi) 1 6.9 0.9 6.2 5.5 4.8 0.8 0.7 0.6 4.1 3.4 0.5 0.4 2.8 0.3 2.1 0.2 1.4 0.7 0.1 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Flow (USgpm) 11 Date - 09/04/25 Supersedes - 06/03/25

  12. NG-D SERIES SUCTION DIFFUSERS SIZE: 2" to 12" DIMENSIONS ANSI 125 / ANSI 250 FROM SYSTEM B D TO PUMP E F J C G (SPACE TO REMOVE STRAINER) A FLANGE SIZE [inch] STRAINER FREE AREA [sq.inch] A B C D E F G J WEIGHT [lbs] TYPE [inch] [inch] [inch] [inch] [inch] [inch] [inch] PUMP SIDE SYSTEM SIDE NG-D-020-020 NG-D-025-020 NG-D-030-020 NG-D-025-025 NG-D-030-025 NG-D-030-030 NG-D-040-030 NG-D-040-040 NG-D-050-040 NG-D-060-040 NG-D-050-050 NG-D-060-050 NG-D-060-060 NG-D-080-060 NG-D-080-080 NG-D-100-080 NG-D-100-100 NG-D-120-100 NG-D-120-120 NG-D-140-120 NOTE: ALL DIMENSIONS ARE INCHES UNLESS OTHERWISE NOTED. 2 2 2 2 35 35 35 35 35 50 50 88 88 88 114 114 162 162 270 270 475 475 780 780 8.98 8.98 8.98 9.49 9.49 10.51 10.51 12.40 12.40 12.40 14.17 14.17 17.64 17.64 21.46 21.46 24.76 24.76 30.00 30.00 5.00 5.00 5.00 5.51 5.51 5.98 5.98 7.01 7.01 7.01 8.03 8.03 10.51 10.51 12.99 12.99 14.49 14.49 17.99 17.99 9.84 9.84 9.84 10.83 10.83 11.81 11.81 12.80 12.80 12.80 14.76 14.76 17.72 17.72 20.67 20.67 23.62 23.62 27.56 27.56 6.26 6.26 6.26 6.26 6.26 7.01 7.01 7.99 7.99 7.99 9.06 9.06 10.98 10.98 12.99 12.99 14.49 14.49 17.99 17.99 4.33 4.33 4.33 4.33 4.33 4.92 4.92 5.43 5.43 5.43 6.54 6.54 7.40 7.40 8.86 8.86 10.14 10.14 13.17 13.17 1/2" NPT 1/2" NPT 1/2" NPT 1/2" NPT 1/2" NPT 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT 1" NPT 1" NPT 1" NPT 1" NPT 1" NPT 1" NPT 1" NPT 1" NPT 1" NPT 1" NPT 0.98 0.98 0.98 0.98 0.98 0.98 0.98 1.26 1.26 1.26 1.26 1.26 1.97 1.97 1.97 1.97 1.97 1.97 1.97 1.97 6.36 6.36 6.36 6.87 6.87 7.22 7.22 9.13 9.13 9.13 10.55 10.55 13.58 13.58 17.36 17.36 18.58 18.58 22.99 22.99 9 2½ 3 2½ 3 3 4 4 5 6 5 6 6 8 8 10 10 12 12 14 10 11 10 11 15 15 20 21 22 28 29 39 41 65 68 89 93 155 161 2½ 2½ 3 3 4 4 4 5 5 6 6 8 8 10 10 12 12 12 Date - 09/04/25 Supersedes - 06/03/25

  13. NOTE

  14. NOTE

  15. NOTE

  16. Phone : +1-570-659-7200, Email : sales@northam-inc.com Product Improvement and changes are a continuous process at ‘Northam’. The data given in this publication is therefore subject to revision.

More Related