BOA-S Strainer


Strainer to DIN/EN with flanged ends, with standard or fine screen; all nominal sizes with drain plug in the cover. Made of grey cast iron or nodular cast iron.
See all documents and downloads

Technical Data

  • Nominal pressurePN 6, PN 16, PN 25
  • Max. nominal sizeDN 400
  • Max. allowed fluid temperature350 °C


  • Long service life due to screen made of stainless steel.
  • Time and cost saving replacement of screen without removing the body insulation by using the studs as centering aids.
  • Standard drain plug for easy inspection and drainage of strainer, particularly of strainers with a large nominal size.

Material number list – BOA-S

84 products
NameNominal pressureNominal size InletScreen designProduct packagingColour Top coatWeightMaterial numberPrice
BOA-S PN 16 DN 15 5.1301 EINFACHPN 16DN 15CoarseWithout3 Kilogram48860314
BOA-S PN 16 DN 20 5.1301 EINFACHPN 16DN 20CoarseWithout4 Kilogram48860315
BOA-S PN 16 DN 25 5.1301 EINFACHPN 16DN 25CoarseWithout5 Kilogram48860316
BOA-S PN 16 DN 25 5.3103 StandardPN 16DN 25CoarseWithout5.5 Kilogram48860960
BOA-S PN 16 DN 32 5.1301 EINFACHPN 16DN 32CoarseWithout7 Kilogram48860317


TitleFormatSizeLast change
Bureau Veritas_SMS.W.II_22473B.O (7101.72_EN)pdf0.356/27/2019
DNV GL_TAP00001G6 (7101.73_EN)pdf0.098/20/2020
TitleFormatSizeLast change
Declaration of Conformity EN-GJL-250 (0570.8527_EN)pdf0.212/25/2020
TitleFormatSizeLast change
Operating instructions (0570.8_EN)pdf8.925/24/2019
TitleFormatSizeLast change
BOA-S (7125.1_EN)pdf2.1812/16/2020
TitleFormatSizeLast change
BOA-S JS (7125.522_EN)zip0.015/28/2020
BOA-S JL (7125.521_EN)zip0.015/28/2020

Technical Data

  • FunctionFilter
  • Connection typeFlange
  • Casing material1821, 1877
  • Nominal pressurePN 6, PN 16, PN 25
  • Max. nominal sizeDN 400
  • Min. nominal sizeDN 15
  • Max. allowed fluid temperature350 °C
  • Min. allowed fluid temperature-10 °C

Sectional Drawings

Upcoming KSB events

KSB - one of the world's leading manufacturers of industrial valves and pumps

Founded in 1871 in Frankenthal (Germany), KSB has been one of the leading suppliers of pumps and industrial valves for over 100 years. With more than 15,500 employees worldwide and its own sales and marketing, manufacturing facilities and service operations, KSB develops and produces custom-fit pumps for various applications.

As an experienced pump manufacturer, its product portfolio includes building and industrial technology, water transport, wastewater treatment and power plant processes. Thanks to innovative research and development, KSB can meet the most diverse requirements of customers. Benefit from many years of experience and technical expertise as a renowned pump manufacturer.

KSB pump manufacturers: the best solution for your plant
Industrial pumps and valves from KSB cover a wide range of applications and are highly energy-efficient. Products convince with the most innovative technology as well as with systems that have been tried and tested for many years - including the Etanorm water pump. Achieving more than 1.5 million sales worldwide, Etanorm is the most successful standard water pump. With KSB spare parts and services.

KSB ensures the operational reliability of its industrial pumps and valves. The KSB success formula for high-performance pumps lies in the technological strength in hydraulics, materials and automation.

Competent service right from the start
The numerous production facilities ensure that KSB as a pump manufacturer can guarantee customer proximity and first-class service. The experienced specialists are certified to ensure excellent quality and extensive experience. KSB Service takes care of the commissioning, inspection, servicing and maintenance of your pumps, valves and complete systems directly on site.  KSB also provide you with spare parts quickly. This means you get the best service directly from your pump manufacturer.