Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK
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Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK - 1

Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK PUMPTECHNOLOGY NHK and SHK 133.47301.51.01 E 02/2005 TECHNICAL DATA Output: max. 200 m³/h Head: max. 85 m Speed: max. 3000 rpm or 1500 rpm Material: Stainless steel Temperature: max. 130 °C or 90 °C Casing pressure: PN 16 Shaft seal: single or double mechanical seal Connections: threaded connection to DIN 11851 or flanged Direction of rotation: clockwise, viewed from drive end APPLICATION Hygienic centrifugal pumps of the NHK and SHK range are used within the food and beverage industry such as breweries and dairies. Applications areas for these pumps include: - Brewing (Mash, wort, beer) - Dairying (milk, cream, fats) - Filtration (Filtration, separation, mixing) - Cleaning (Up & Downstream CIP) - Filling (Beer, soft drinks, juices) - Sterile and pure water Design The single stage NHK is a hygienic volute-casing pump with open impeller (for optimised pumping of shear sensitive media) rotating on a robust shaft. The thick-walled stainless steel casing is fixed by a sturdy quick-release clamp ring with sanitary grade O-ring sealing. All process-wetted parts are constructed from electropolished AISI 316L stainless steel. Importantly, the volute casing is rolled steel whilst the casing cover is forged in order to give a heavy-duty construction. All other parts are made of AISI 304. The SHK range is a single stage, self-priming, hygienic side channel pump. All process-wetted parts are made of AISI 316L. All other parts are made of AISI 304. The NHK and SHK range are in accordance with food-grade standards 3A1 with a surface roughness Ra 3,2 ìm (other standards are optional). The Modular and compact design, the use of standard motors and several options guarantee a reliable performance within the food and beverage industry. flooded suction, type NHK self-priming, type SHK CONSTRUCTION Casing pressure: NHK 25: max. 10 bar up to +130 °C NHK from 50: max. 16 bar up to +130 °C SHK: max. 10 bar up to + 90 °C Flange location: Axial suction, radially vertical discharge. Connections: Threaded connections to DIN 11851 or flanged. Hydraulic: Design code A for n = 1450 1/min Design code B for n = 2900 1/min Shaft sealing: Shaft sealing can be either single or double mechanical seal. Design code X0A: single mechanical seal, seal face materials SiC/SiC, elastomer EPDM Design code X0B: double mechanical seal, seal face materials product side SiC/SiC, elastomer EPDM, atmospheric side Cr-Steel/carbon, elastomer EPDM

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Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK - 2

2 Options Connections: The NHK range is equipped with threaded connections according to DIN 11851 as standard. Optional small flanges are also available. The SHK range is equipped with threaded connections according to DIN 11851. Installation: a) Motor mounting (Standard execution) b) Stainless steel foot mounting c) Adjustable height stainless steel base frame Accessories: a) Stainless steel cover Frequency converter: Optionally available for motors up to 7.5 kW.

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Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK - 3

3 Sectional drawing and materials NHK 25 Pos. Part Material 10.20 Volute casing 1.4404 / AISI 316 L 16.10 Casing cover 1.4404 / AISI 316 L 21.00 Shaft 1.4404 / AISI 316 Ti 23.00 Impeller 1.4404 / AISI 316 L 41.20 Casing sealing EPDM 41.21 Impeller sealing EPDM 43.30 Mechanical seal SiC/SiC/EPDM 51.50 Clamp ring Stainless steel 92.20 Impeller nut Stainless steel NHK 50 up to 66 Pos. Part Material 10.20 Volute casing 1.4435 / AISI 316 L 16.10 Casing cover 1.4404 / AISI 316 L 21.00 Shaft 1.4404 / AISI 316 Ti 23.00 Impeller 1.4404 / AISI 316 L 23.10 Sealing bush 1.4404 / AISI 316 L 41.20 Casing...

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Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK - 4

4 SHK 40 up to 65 10.60 10.70 10.90 11.40 21.00 23.00 41.21 90.10 43.00 84.00 55.00 41.22 55.60 41.24 41.23 52.30 Pos. Part Material 10.60 Suction casing 1.4404 / AISI 316 L 10.70 Discharge casing 1.4404 / AISI 316 L 10.90 Suction disk 1.4404 / AISI 316 L 11.40 Discharge disc 1.4404 / AISI 316 L 21.00 Shaft 1.4404 / AISI 316 L 23.00 Impeller 1.4404 / AISI 316 L 41.21 Casing sealing EPDM 41.22 Sealing sealing bush EPDM 41.23 Sealing impeller EPDM 41.24 Sealing shaft EPDM 43.30 Mechanical seal SiC/SiC/EPDM 52.30 Sealing bush 1.4404 / AISI 316 L 55.00 Disc 1.4301 55.60 Adjusting disc 1.4301...

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Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK - 5

5 Performance range 50 Hz Type NHK n = 1450 rpm Q [m³/h] H [m] NHK 25 NHK 50 NHK 65 NHK 66 Type NHK n = 2900 rpm NHK 25 NHK 50 NHK 51 NHK 65 NHK 60 NHK 66 Q [m³/h] H [m] Type SHK see page 16

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Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK - 23

23 Size Hydraulic + Bearing Shaft sealing Material Casing sealing Motor size Connections Diameter DN1/DN2 A • = 1450 rpm B • = 2900 rpm • Z = motor bearing X0A = single mech. seal X0B = double mech. seal 4B = stainless steel 1 = O-ring EPDM 1 = threaded connection DIN 11851 2 = small flange (FN1) 1 = 40/40 2 = 50/50 3 = 65/65 4 = 80/80 5 = 80/65 6 = 100/80 7 = 125/100 8 = 65/50 65176 65181 65186 UA 65191 65196 BZ VA 3 4 66200 66215 PB SB 66230 AZ UB 7 66196 66201 66206 66211 66216 BZ X0A X0B 4B 1 VA 1 2 6 Data regarding size – order information SHK Size Hydraulic + Bearing Shaft sealing...

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Hygienic centrifugal pump Flooded suction and self-priming Type NHK and SHK - 24

24 S t e r l i n g S I H I Gmb H Lindenstraße 170, D-25524 Itzehoe, Germany Telefon: +49 (0)48 21 / 7 71-01 Telefax: +49 (0)48 21 / 7 71-274

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