Ball type Non-Return Valve

Size Range

DN400

Pressure Class

PN10/PN16

Standards

EN12050-4, EN 12334, EN 12266-1, EN558 Table 2 series 48 (DIN3202-F6), EN1092-2/BS4504

End connection

Double flange (EN1092-2/BS4504, PN10/16); Threaded ends (BSP inside screwed) available for DN80 and smaller

Face-to-face

EN558 Table 2 series 48 (DIN3202-F6)

Available pressure classes

Pressure classes this product is rated to.

Configure your variant(manually adjust box on the right if you require a different spec)

Pressure

PN10PN16

End connection

Flanged EN1092-2 / BS4504 PN10/16Threaded BSP inside screwed

Materials

All available material options per part. Click a pill to set it in the configurator.

body

cast ductile iron

disc

Hollow Steel Ball with NBR Lining

ball

hollow steel ball with nitrile rubber lining

Ball

Steel + NBR

Body

Ductile Iron (GGG50)

Bolt/Nut/Washer

Stainless Steel AISI 304

Bonnet

Ductile Iron

coating

epoxy

O-Ring

NBR

Operating media

Coatings

Approvals

Features

• Automatically opened and closed by medium flow force
• Full bore, 100% flow area, full waterway, low flow resistance
• Self-cleaning sinking nitrile-coated ball; no risk of impurities becoming stuck on the ball
• Silent closing, no water hammer
• Suitable for horizontal or vertical installation
• Compact and light weight design
• Hollow steel ball lined with rubber layer for sealing elasticity and structural strength
• Cast ductile iron body with inside and outside epoxy coating
• Minimum backpressure: 0.5 bar
• Threaded ends (BSP inside screwed) available for DN80 and smaller
• 100% testing before packing and delivery
• Low pressure drop
• Y-pattern ball check valve (flanged and screwed-end variants)
• Flanged range: DN40–DN500; screwed range: DN25–DN80
• Suitable for horizontal installation (bonnet angled downward) and vertical installation (flow upward only)
• Bonnet bolt-on design allowing in-line maintenance
• Body casting marked with DN, PN, and material grade (GGG50)
• Performance: DN50 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~10 m³/h; approx. 5 M.W.C. at ~50 m³/h
• Performance: DN65 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~15 m³/h; approx. 5 M.W.C. at ~65 m³/h
• Performance: DN80 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~20 m³/h; approx. 5 M.W.C. at ~90 m³/h
• Performance: DN100 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~30 m³/h; approx. 5 M.W.C. at ~130 m³/h
• Performance: DN125 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~50 m³/h; approx. 5 M.W.C. at ~200 m³/h
• Performance: DN150 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~70 m³/h; approx. 5 M.W.C. at ~300 m³/h
• Performance: DN200 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~120 m³/h; approx. 5 M.W.C. at ~550 m³/h
• Performance: DN250 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~200 m³/h; approx. 5 M.W.C. at ~900 m³/h
• Performance: DN300 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~300 m³/h; approx. 5 M.W.C. at ~1300 m³/h
• Performance: DN350 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~400 m³/h; approx. 5 M.W.C. at ~1800 m³/h
• Performance: DN400 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~550 m³/h; approx. 5 M.W.C. at ~2500 m³/h
• Performance: DN500 flanged: fully open pressure loss approx. 0.1 M.W.C. at ~800 m³/h; approx. 5 M.W.C. at ~4000 m³/h
• Performance: DN32 screwed: minimum opening pressure loss approx. 0.4 M.W.C. at ~8 m³/h; approx. 5 M.W.C. at ~21 m³/h
• Performance: DN40 screwed: minimum opening pressure loss approx. 0.4 M.W.C. at ~10 m³/h; approx. 5 M.W.C. at ~40 m³/h
• Performance: DN50 screwed: minimum opening pressure loss approx. 0.4 M.W.C. at ~15 m³/h; approx. 5 M.W.C. at ~55 m³/h
• Performance: DN65 screwed: minimum opening pressure loss approx. 0.4 M.W.C. at ~25 m³/h; approx. 5 M.W.C. at ~90 m³/h
• Performance: Valve fully open at flow velocity 1–1.5 m/s; closed valve back pressure 0.5 bar
• Performance: Mounting distance downstream of pumps and elbows minimum 5 × DN

Notes

• Threaded ends (BSP inside screwed) are available for size DN80 and smaller.
• Normally with double flange ends.
• Minimum backpressure: 0.5bar
• Diagram: Image 3: Sectional/exploded dimensional diagram of flanged Y-type ball check valve labelling 6 parts: (1) Body – Ductile Iron, (2) Ball – Steel+NBR, (3) O-Ring – NBR, (4)(5) Bolt/Nut/Washer – SS AISI304, (6) Bonnet – Ductile Iron. Dimension references H, D, K, G, B, n-d, L shown.
• Diagram: Image 4: Combined dimensional drawing showing four bonnet-cap cross-section variants for DN40–65, DN80–500, DN40–150, DN200–500; flanged dimension table for PN10 and PN16 per EN1092-2 alongside a small-bore screwed-end dimension table.
• Diagram: Image 5: Mounting instruction diagram showing correct horizontal and vertical (upward flow) installation orientations and two incorrect orientations (flow reversed, flow downward). Includes note: valve fully open at 1–1.5 m/s; closed back pressure 0.5 bar; minimum 5×DN spacing downstream of pumps/elbows.
• Diagram: Image 6: Log-log pressure loss (M.W.C.) vs. flow rate (m³/h) performance chart for flanged ball check valves DN50 through DN500.
• Diagram: Image 7: Log-log pressure loss (M.W.C.) vs. flow rate (m³/h) performance chart for screwed-end ball check valves DN32 through DN65.
• Diagram: Image 8: Duplicate of image 3 sectional/exploded dimensional diagram (identical content).
• Diagram: Image 10: Duplicate of image 4 combined dimensional drawing (identical content).

Description

Ball type Non-Return Valve Brief description: Ball Check Valve is the main stream product type for the waste-water industry. Internal and ball structure enables, non-stop functioning, self-cleaning and with full bore. Operation is based on a free ball inside the body which is pushed by the pumped flow to the side cavity, allowing the liquid pass through. When the pump stoped and the ball is no longer pushed aside, it drops back in the inlet port and prevents flow returns. Ball check valves are available with flanges and internal threads. SEND INQUIRY CHAT NOW Product Detail FAQ Product Tags Design Features This type of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline. It is an automatic valve. It is applicable to industrial an