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Ball check valve – Buy stainless steel and GGG40 ball non-return valves now from Fergo

Ball Check Valve & Ball Backflow Preventer — Stainless Steel & GGG40, DN15–DN500

Stainless steel 1.4408 & GGG40 | DN15–DN500 | PN10/16 & ANSI 150 | Flanged & threaded | NBR / PTFE / FKM | in stock | 2–7 working days

Ball check valves — also known as ball backflow preventers — prevent backflow automatically and without external power: during forward flow the medium lifts the ball from its seat; when flow stops the ball drops back and seals. FERGO stocks over 60 ball check valves in stainless steel 1.4408 and ductile iron GGG40. The self-cleaning design is particularly suited to solids-laden, viscous and contaminated media where conventional swing or lift check valves can jam. Ball check valves with flanged connections to EN 1092-2 ...

Stainless steel 1.4408 & GGG40 | DN15–DN500 | PN10/16 & ANSI 150 | Flanged & threaded | NBR / PTFE / FKM | in stock | 2–7 working days

Ball check valves — also known as ball backflow preventers — prevent backflow automatically and without external power: during forward flow the medium lifts the ball from its seat; when flow stops the ball drops back and seals. FERGO stocks over 60 ball check valves in stainless steel 1.4408 and ductile iron GGG40. The self-cleaning design is particularly suited to solids-laden, viscous and contaminated media where conventional swing or lift check valves can jam. Ball check valves with flanged connections to EN 1092-2 and threaded ball check valves with BSP female thread are available from stock.

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Edelstahl Kugelrueckflussverhinderer
RB106 Ball check valve DN 125 PN16 Stainless steel NBR
Product number
Copy to clipboard 303-1008-13
Stainless steel Ball check valve DN 125 PN16Intermediate flanges acc. to DIN PN16, face-to-face length acc. to EN 558-1 series 48, ball made of steel NBR coated, body made of stainless steel 1.4408 (AISI316), operating pressure 16bar
Execution :
Ball Check Valve
Nominal width :
DN125 - 5'' inch
Body:
Stainless Steel
Seal :
NBR
Price €1,865.32
€2,219.73 incl. VAT
Delivery Time: 2-7 Days
Available: In Stock
Kugelrückschlagventile aus GGG40: Jetzt bei FERGO
RB105 Ball check valve DN 350 PN16 Spheroidal cast iron Aluminium NBR
Product number
Copy to clipboard 303-1016-22
Ball check valve DN 350, flange holes to EN 1092-2 connection PN16, face-to-face length to EN 558-1 series 48, ball made of aluminium NBR coated, body made of EN-GJS-400-15 (GGG40) nodular cast iron, operating pressure 16bar
Execution :
Ball Check Valve
Nominal width :
DN350 - 14'' inch
Body:
Ductile Cast Iron (GGG40)
Seal :
NBR
Price €2,067.02
€2,459.75 incl. VAT
Delivery Time: 1-2 weeks
Available: In Stock
Kugelrückschlagventile aus GGG40: Jetzt bei FERGO
RB105 Ball check valve DN 350 PN10 Spheroidal cast iron Aluminium NBR
Product number
Copy to clipboard 303-1006-22
Ball check valve DN 350, flange holes to EN 1092-2 connection PN10, face-to-face length to EN 558-1 series 48, ball made of aluminium NBR coated, body made of EN-GJS-400-15 (GGG40) nodular cast iron, operating pressure 16bar
Execution :
Ball Check Valve
Nominal width :
DN350 - 14'' inch
Body:
Ductile Cast Iron (GGG40)
Seal :
NBR
Price €2,065.93
€2,458.46 incl. VAT
Delivery Time: 3-4 weeks
Available: In Stock
Kugelrückschlagventile aus GGG40: Jetzt bei FERGO
RB105 Ball check valve DN 250 PN10 Spheroidal cast iron Aluminium NBR
Product number
Copy to clipboard 303-1006-18
Ball check valve DN 250, flange holes according to EN 1092-2 connection PN10, face-to-face length according to EN 558-1 series 48, ball made of aluminium NBR coated, body made of EN-GJS-400-15 (GGG40) nodular cast iron, operating pressure 16bar
Execution :
Ball Check Valve
Nominal width :
DN250 - 10'' inch
Body:
Ductile Cast Iron (GGG40)
Seal :
NBR
Price €1,203.87
€1,432.61 incl. VAT
Delivery Time: 2-7 Days
Available: In Stock
ARV2 Flowserve Ball Check Valve PFA Lined
Flowserve Atomac ARV2 Flanged Ball Check Valve 1/2" Inch Class 150 PFA lined
Product number
Copy to clipboard 303-1104-04
Flowserve Atomac Ball Check Valve 1/2"Flanged connection acc. to ASME B16.5, Class 150, RF, Face to Face 131mm, Body Ductile Iron GGG40.3-PFA-lined, Ball PTFE (Solid), Max. operating pressure 20 bar, Tightness test acc. to DIN EN 12266-1 (Leak rate B)
Execution :
Ball Check Valve
Nominal width :
DN15 - 1/2'' inch
Categories :
ARV2 - Ball Check Valve
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Seal :
PTFE
Price €457.47
€544.39 incl. VAT
Delivery Time: 3-4 weeks
Available: In Stock
ARV2 Flowserve Ball Check Valve PFA Lined
Flowserve Atomac ARV2 Flanged Ball Check Valve 6" Inch Class 150 PFA lined
Product number
Copy to clipboard 303-1104-14
Flowserve Atomac Ball Check Valve 6"Flanged connection acc. to ASME B16.5, Class 150, RF, Face to Face 356mm, Body Ductile Iron GGG40.3-PFA-lined, Ball PTFE (Solid), Max. operating pressure 20 bar, Tightness test acc. to DIN EN 12266-1 (Leak rate B)
Execution :
Ball Check Valve
Categories :
ARV2 - Ball Check Valve
Nominal width :
DN150 - 6'' inch
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Seal :
PTFE
Price €5,091.84
€6,059.29 incl. VAT
Delivery Time: 3-4 weeks
Available: In Stock
Edelstahl Kugelrueckflussverhinderer
RB106 Ball check valve DN 150 PN16 Stainless steel NBR
Product number
Copy to clipboard 303-1008-14
Stainless steel Ball check valve DN 150 PN16Between flanges according to DIN PN16, face-to-face length according to EN 558-1 series 48, ball made of steel NBR coated, body made of stainless steel 1.4408 (AISI316), operating pressure 16bar
Nominal width :
DN150 - 6'' inch
Execution :
Ball Check Valve
Body:
Stainless Steel
Seal :
NBR
Price €2,219.99
€2,641.79 incl. VAT
Delivery Time: 2-7 Days
Available: In Stock
ARV2 Flowserve Ball Check Valve PFA Lined
Flowserve Atomac ARV2 Flanged Ball Check Valve 2" Inch Class 150 PFA lined
Product number
Copy to clipboard 303-1104-09
Flowserve Atomac Ball Check Valve 2"Flanged connection acc. to ASME B16.5, Class 150, RF, Face to Face 203mm, Body Ductile Iron GGG40.3-PFA-lined, Ball PTFE (Solid), Max. operating pressure 20 bar, Tightness test acc. to DIN EN 12266-1 (Leak rate B)
Execution :
Ball Check Valve
Categories :
ARV2 - Ball Check Valve
Nominal width :
DN50 - 2'' inch
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Seal :
PTFE
Price €832.32
€990.46 incl. VAT
Delivery Time: 3-4 weeks
Available: In Stock
ARV2 Flowserve Ball Check Valve PFA Lined
Flowserve Atomac ARV2 flange DN32 1 1/4" PN16 ball check valve PFA lined nodular cast iron
Product number
Copy to clipboard 303-1100-07
Flowserve Atomac Ball Check Valve DN32Flanged connection acc. to DIN EN 1092-2, PN16, Face to Face acc. to DIN EN 558, Series 1, Body Ductile Iron GGG40.3-PFA-lined, Ball PTFE (Solid), Max. operating pressure 16 bar, Tightness test acc. to DIN EN 12266-1 (Leak rate B)
Execution :
Ball Check Valve
Nominal width :
DN32 - 1 1/4'' inch
Categories :
ARV2 - Ball Check Valve
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Seal :
PTFE
Price €507.96
€604.47 incl. VAT
Delivery Time: 2-7 Days
Available: In Stock
ARV2 Flowserve Ball Check Valve PFA Lined
Flowserve Atomac ARV2 Flanged Ball Check Valve 3" Inch Class 150 PFA lined
Product number
Copy to clipboard 303-1104-11
Flowserve Atomac Ball Check Valve 3"Flanged connection acc. to ASME B16.5, Class 150, RF, Face to Face 241mm, Body Ductile Iron GGG40.3-PFA-lined, Ball PTFE (Solid), Max. operating pressure 20 bar, Tightness test acc. to DIN EN 12266-1 (Leak rate B)
Categories :
ARV2 - Ball Check Valve
Nominal width :
DN80 3'' inch
Execution :
Ball Check Valve
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Seal :
PTFE
Price €1,600.38
€1,904.45 incl. VAT
Delivery Time: 3-4 weeks
Available: In Stock
ARV2 Flowserve Ball Check Valve PFA Lined
Flowserve Atomac ARV2 flange DN150 6" PN16 ball check valve PFA lined nodular cast iron
Product number
Copy to clipboard 303-1100-14
Flowserve Atomac Kugelrückschlagventil DN 150Flange connection drilled acc. to DIN EN 1092-2 PN16, installation length acc. to DIN EN 558 (basic series 1), ball material PTFE solid ball, body (2-piece) nodular cast iron EN-JS 1049 (GGG40.3) / PFA lined, max.pressure 16bar, Tightness test acc. to DIN EN 12266-1 (Leak rate B)
Execution :
Ball Check Valve
Categories :
ARV2 - Ball Check Valve
Nominal width :
DN150 - 6'' inch
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Seal :
PTFE
Price €5,091.84
€6,059.29 incl. VAT
Delivery Time: 2-7 Days
Available: In Stock
Kugelrückschlagventile aus GGG40: Jetzt bei FERGO
RB105 Ball check valve DN 250 PN16 Spheroidal cast iron Aluminium NBR
Product number
Copy to clipboard 303-1016-18
Ball check valve DN 250, flange holes to EN 1092-2 connection PN16, face-to-face length to EN 558-1 series 48, ball made of aluminium NBR coated, body made of EN-GJS-400-15 (GGG40) nodular cast iron, operating pressure 16bar
Execution :
Ball Check Valve
Nominal width :
DN250 - 10'' inch
Body:
Ductile Cast Iron (GGG40)
Seal :
NBR
Price €1,205.50
€1,434.54 incl. VAT
Delivery Time: 2-7 Days
Available: In Stock

Ball check valve stainless steel & GGG40 — series comparison

FeatureRB105 — GGG40RB106 — Stainless steel 1.4408
BodyDuctile iron EN-GJS-400-15 (GGG40)Stainless steel 1.4408 (AISI 316)
Nominal sizesDN50–DN500DN15–DN300
PressurePN16PN16
Temperature−20 °C to +80 °C−20 °C to +80 °C
BallAluminium, NBR-coatedSteel, NBR-coated
SealsNBRNBR (PTFE, FKM on request)
ConnectionFlange EN 1092-2 PN16Flange DIN PN16 + BSP threaded
Face-to-faceEN 558-1 Series 48EN 558-1 Series 48 (flanged)
ApplicationsWastewater, sewage, irrigation, coolingChemical, food, pharma, seawater

The stainless steel ball check valve (RB106) is the first choice for corrosive, hygienic or aggressive media — all wetted parts are 1.4408. The GGG40 ball backflow preventer (RB105) is the economical alternative for water and wastewater service with its self-cleaning aluminium ball.

Ball check valve flanged & threaded — connection types

ConnectionNominal sizesBodies availableStandards
Flange PN16DN50–DN500 (GGG40) / DN15–DN300 (SS)Stainless steel + GGG40EN 1092-2, EN 558-1 Series 48
Flange PN10DN50–DN500 (GGG40)GGG40EN 1092-2
Flange ANSI 150on requestGGG40 / Stainless steelASME B16.5
BSP female threadDN15–DN80 (½"–3")Stainless steel 1.4408BSP to ISO 228-1

Seal material — ball backflow preventer

SealTemperatureTypical media
NBR (standard)−20 °C to +80 °CWater, wastewater, oils, greases, compressed air
PTFE−20 °C to +150 °CAcids, alkalis, solvents, aggressive chemicals
FKM / Viton−15 °C to +200 °CHydrocarbons, fuels, higher temperatures

Media compatibility can be verified using the resistance check tool.

Applications — ball check valves

IndustryRecommended seriesSeal
Wastewater / Sewage treatmentRB105 (GGG40) — self-cleaning aluminium ballNBR
Water supply / Pressure boostingRB105 (GGG40) or RB106 (stainless steel)NBR
Chemical / ProcessRB106 (stainless steel 1.4408)PTFE / FKM
Food / PharmaceuticalRB106 (stainless steel 1.4408)NBR / PTFE
Mining / SlurriesRB105 (GGG40) — abrasion-resistant ballNBR
Irrigation / Cooling waterRB105 (GGG40)NBR

An upstream strainer protects the sealing face from coarse solids. In systems with high flow velocities, rubber expansion joints reduce water hammer at pump stop. For requirements beyond the standard range, FERGO engineers configure custom solutions — including PFA-lined versions.

Installation — ball backflow preventer

FERGO ball check valves can be installed horizontally and vertically (flow from bottom to top). The flow arrow on the body shows the correct direction. For flanged ball check valves, tighten bolts gradually in a cross pattern. Threaded ball check valves (BSP female) are screwed into the pipe socket with thread sealant tape or hemp.

Ball check valves in stock — EU-wide delivery

FERGO stocks over 60 ball check valves and ball backflow preventers — DN15 to DN500, in stainless steel 1.4408 and GGG40, flanged and threaded. Standard shipping via DHL arrives in 2–7 working days across Europe. Each ball check valve ships with datasheet and declaration of conformity. Certificates to EN 10204 (2.1 / 3.1) are available on request.

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