Industrial check valves for water, oil & chemicals. Stainless steel, ductile iron & threaded designs.
Plastic Check Valve DN 80 PP-H PN10/16 NBR RK106
Product number
301-1064-11
The Check Valve DN 80 PN10/16 reliably prevents unwanted backflow in pipework systems. Versions: DN 80, PN10/16, intermediate flange. Materials and seals: Body and disc made of PP-H and NBR – seal for liquid and gaseous media. The compact design allows for easy installation and reliably protects pumps and system components against backflow. Suitable for pump systems, water technology, heating and cooling circuits, industrial supply systems and pipework with backflow protection.
Disc:
PP-H
Execution :
Sandwich Check Valve
Nominal width :
DN80 3'' inch
Connection :
Flange PN10
Connection :
Flange PN16
Body:
PP-H
Price €72.68
€86.49 incl. VAT Delivery Time:
Available: In Stock
Plastic Check Valve DN 100 PP-H PN10/16 Viton RK106
Product number
301-1066-12
The Check Valve DN 100 PN10/16 reliably prevents unwanted backflow in piping systems. Versions: DN 100, PN10/16, intermediate flange. Materials and seals: Body and disc made of PP-H and FKM / FPM (Viton) seal for liquid and gaseous media. The compact design allows for easy installation and reliably protects pumps and system components against backflow. Suitable for pumping systems, water technology, heating and cooling circuits, industrial supply systems and pipework with backflow protection.
Disc:
PP-H
Execution :
Sandwich Check Valve
Nominal width :
DN100 - 4'' inch
Connection :
Flange PN10
Connection :
Flange PN16
Body:
PP-H
Price €97.44
€115.95 incl. VAT Delivery Time:
Available: In Stock
Check Valve DN 65 Stainless Steel FPM Viton PN16 RK101
Product number
301-1040-10
The Check Valve DN 65 PN16 reliably prevents unwanted backflow in piping systems. Design: DN 65, PN16, intermediate flange, flanged connection. Materials and seals: Body & disc made of Stainless Steel (1.4408); seat seal FPM Viton. Operating data: Max. pressure 16 bar. Further features: Wafer-Type Check Valve Flange connection ; Temperature range: -10°C to +180°C. The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Execution :
Sandwich Check Valve
Flap material :
Stainless steel (1.4408/1.4581)
Nominal width :
DN65 - 2 1/2'' inch
Connection :
Flange PN16
Seal :
FPM/FKM - (Viton)
Body:
Stainless Steel
Price €67.01
€79.74 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
Wafer-type Check Valve DN 50 Stainless Steel Metall PN10-40 RK100
Product number
301-1025-09
The Wafer-Type Check Valve DN 50 PN10/16 reliably prevents unwanted backflow in pipework systems. Model: DN 50, PN10/16/25/40, Wafer-Type check valve, flanged connection. Materials and seals: 1.4408; metal seat seal. Operating data: Max. pressure 16 bar. Further features: Wafer-Type Check Valve Flange connection /25/40 in accordance with EN 1092-1 Form B; valve disc made of Stainless Steel (1.4408 / 1.4581); screws made of Stainless Steel (1.4401). The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Execution :
Sandwich Check Valve
Flap material :
Stainless steel (1.4408/1.4581)
Nominal width :
DN50 - 2'' inch
Connection :
Flange PN10
Connection :
Flange PN16
Connection :
Flange PN40
Price €77.71
€92.48 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
Check Valve DN 50 Stainless Steel FPM Viton PN16 RK101
Product number
301-1040-09
The Check Valve DN 50 PN16 reliably prevents unwanted backflow in piping systems. Design: DN 50, PN16, intermediate flange, flanged connection. Materials and seals: Body & disc made of Stainless Steel (1.4408); seat seal FPM Viton. Operating data: Max. pressure 16 bar. Further features: Wafer-Type Check Valve Flange connection ; Temperature range: -10°C to +180°C. The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Execution :
Sandwich Check Valve
Flap material :
Stainless steel (1.4408/1.4581)
Nominal width :
DN50 - 2'' inch
Connection :
Flange PN16
Seal :
FPM/FKM - (Viton)
Body:
Stainless Steel
Price €55.64
€66.21 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
Wafer-type Check Valve DN 32 Steel galvanised PTFE PN10-40 RK100
Product number
301-1003-07
The Wafer-Type Check Valve DN 32 PN10/16 reliably prevents unwanted backflow in pipework systems. Model: DN 32, PN10/16/25/40, wafer, flanged connection. Materials and seals: Body: galvanised Steel 1.0619; seat seal: PTFE (Teflon). Operating data: Max. pressure 16 bar. Further features: Wafer-Type Check Valve Flange connection /25/40 in accordance with EN 1092-1 Form B; valve body galvanised Steel (1.0619); Stainless Steel screws. The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Flap material :
Galvanized steel (1.0619)
Nominal width :
DN32 - 1 1/4'' inch
Connection :
Flange PN10
Connection :
Flange PN16
Connection :
Flange PN40
Connection :
Flange PN25
Price €47.00
€55.93 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
Wafer-type Check Valve DN 80 Stainless Steel PTFE Spring Return PN10-40 RK100
Product number
301-1044-11
The Wafer-Type Check Valve DN 80 PN10/16 reliably prevents unwanted backflow in piping systems. Model: DN 80, PN10/16/25/40, Wafer-Type, flanged connection, DIN. Materials and seals: 1.4408; seat seal PTFE. Operation and features: spring-return. Operating data: max. pressure 16 bar. Further features: Wafer-Type Check Valve Flange connection /25/40 according to DIN 2632/2633; Valve Stainless Steel (1.4408 / 1.4581); Screws Stainless Steel (1.4401) with spring return. The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Execution :
Sandwich Check Valve
Flap material :
Stainless steel (1.4408/1.4581)
Spring :
Stainless steel (1.4571)
Screws :
Stainless steel (1.4401/1.4571)
Nominal width :
DN80 3'' inch
Connection :
Flange PN10
Price €158.54
€188.66 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
Wafer-type Check Valve DN 100 Stainless Steel Metall PN16 RK100
Product number
301-1025-12
The Wafer-Type Check Valve DN 100 PN10/16 reliably prevents unwanted backflow in pipework systems. Design: DN 100, PN10/16, Wafer-Type, flanged connection. Materials and seals: Stainless Steel body (1.4408); metal seat seal. Operating data: Max. pressure 16 bar. Further features: Wafer-Type Check Valve Flange connection in accordance with EN 1092-1 Form B; valve body Stainless Steel (1.4408 / 1.4581); screws Stainless Steel (1.4401). The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Execution :
Sandwich Check Valve
Flap material :
Stainless steel (1.4408/1.4581)
Nominal width :
DN100 - 4'' inch
Connection :
Flange PN10
Connection :
Flange PN16
Body:
Stainless Steel
Price €168.72
€200.78 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
Wafer-type Check Valve DN 32 Stainless Steel EPDM Spring Return PN10-40 RK100
Product number
301-1042-07
The Wafer-Type Check Valve DN 32 PN10/16 reliably prevents unwanted backflow in pipework systems. Model: DN 32, PN10/16/25/40, Wafer-Type, DIN. Materials and seals: Stainless Steel body 1.4408. Operation and features: Spring-return. Operating data: 16 bar. Further features: Ideal for water, steam and industrial media. Now available with express delivery in Germany, Austria and Switzerland. The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Execution :
Sandwich Check Valve
Flap material :
Stainless steel (1.4408/1.4581)
Spring :
Stainless steel (1.4571)
Screws :
Stainless steel (1.4401)
Nominal width :
DN32 - 1 1/4'' inch
Connection :
Flange PN10
Price €93.49
€111.25 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
Wafer-type Check Valve DN 40 Stainless Steel PTFE PN10-40 RK100
Product number
301-1023-08
The Wafer-Type Check Valve DN 40 PN10/16 reliably prevents unwanted backflow in piping systems. Model: DN 40, PN10/16/25/40, Wafer-Type, flanged connection, DIN. Materials and seals: 1.4408; PTFE (Teflon). Operating data: Max. pressure 16 bar. Further features: Wafer-Type Check Valve Flange connection /25/40 in accordance with DIN 2632/2633; Valve body Stainless Steel (1.4408 / 1.4581); Screws Stainless Steel (1.4401). The compact design allows for easy installation and reliably protects pumps and system components against backflow.
Execution :
Sandwich Check Valve
Flap material :
Stainless steel (1.4408/1.4581)
Nominal width :
DN40 - 1 1/2'' inch
Connection :
Flange PN10
Connection :
Flange PN16
Connection :
Flange PN40
Price €76.56
€91.11 incl. VAT Delivery Time: 2–5 Working Days
Available: In Stock
With or without spring – when does the check valve need spring return?
| Feature | Without spring (gravity close) | With spring return |
|---|---|---|
| Closing principle | Disc closes under its own weight after flow stops | Spring begins closing disc as flow decelerates – before reversal |
| Water hammer protection | Low – disc waits for backflow before closing | High – disc closes before backflow; pressure surges effectively reduced |
| Installation position | Horizontal only (hinge axis horizontal) or vertical upward flow | All positions: horizontal, vertical up AND down, inclined |
| Cracking pressure | Very low – disc weight only | Slightly higher – spring force must be overcome |
| Required for | Low-velocity lines, gravity mains | Pump discharge, booster systems, PTFE & metal seats (always), vertical downward flow |
Rule of thumb: On every pump discharge and with PTFE or metal seats, a spring-return check valve is mandatory. For even faster closure and better water hammer protection at larger sizes: dual plate check valve.
Seat selection – NBR, EPDM, PTFE, FKM or metal?
| Seat | Temperature | Media | Spring? |
|---|---|---|---|
| NBR | –10 °C to +80 °C | Water, mineral oil, fuel, sewage | Optional |
| EPDM | –40 °C to +120 °C | Drinking water, hot water, steam, dilute acids/alkalis | Optional |
| PTFE | –10 °C to +200 °C | Universal: acids, alkalis, solvents, oxidisers | Required |
| FKM (Viton) | –10 °C to +180 °C | Fuels, aromatics, concentrated acids | Optional |
| Metal | –10 °C to +300 °C | Steam, thermal oil, abrasive media | Required |
EPDM seats with DVGW W270 / ACS / WRAS compliance are the standard for drinking water. When in doubt: FERGO resistance check tool.
Body materials – stainless steel, galvanised steel or plastic?
- Stainless steel 1.4408 (RK100 / RK101): disc & body CF8M; screws 1.4401; up to +200 °C (PTFE) / +300 °C (metal); corrosion-resistant, hygienic, food-grade. For chemicals, pharma, food, drinking water, offshore
- Galvanised steel 1.0619 (RK100): economical alternative for neutral media; zinc coating for outdoor use; up to +120 °C. For HVAC, general water supply, industrial utilities
- PP-H plastic (RK106): PN10/16; lightweight, chemically resistant, electrically insulating; NBR or FKM seat. For chemical plants, water treatment, electroplating
- PVC-U: for cold, non-flammable chemical media up to +60 °C; lightweight, cost-effective
- GGG40.3 + PFA lining: ductile iron body with full PFA lining for highly aggressive chemicals – see PFA check valve
All certificates detail in the FERGO certificate portal.
Single-flap or dual plate – which check valve for water hammer protection?
| Criterion | Single flap (RK100/RK101) | Dual plate (RF200/RF202) |
|---|---|---|
| Closure element | Single disc on hinge pin | Two spring-loaded half-discs on central shaft |
| Closing speed | Medium (with spring) to slow (without) | Very fast – milliseconds due to low inertia |
| Water hammer protection | Good (with spring) | Excellent – industry standard for pump discharge > DN100 |
| Pressure loss | Low | Very low – plates lie parallel to flow |
| Size range | DN32–DN400 | DN50–DN300 |
| Preferred for | General backflow protection, DN32–DN100 | Pump discharge, high velocity, DN100+ |
Rule of thumb: From DN100 on pump discharge, always specify a dual plate check valve. For smaller DN or lower velocities, a single-flap with spring is sufficient. Other types: disco check valves · lift check valves · threaded check valves.
Wafer check valves in stock – EU-wide delivery
All 439 wafer check valves ship from the FERGO warehouse in Neuss, Germany. Delivery: 2–5 working days by DHL across Europe. Special configurations (aluminium bronze, PVDF, ANSI flange drilling, 3.1 material certificates) on request. Technical advice: +49 (0) 21 31 / 15 39 28-0 · [email protected]