RITAG Check Valves
Dual plate, swing, lift and nozzle check valves from RITAG — engineered in Germany for water supply, wastewater and demanding industrial process systems up to DN 1400.
RITAG
ZRD — Dual Plate Check Valves
The most versatile check valve type from RITAG. Wafer-pattern dual plate design available to DIN and API standards in a wide range of materials. Opening pressure as low as 7 mbar.
ZRD (DIN)
ZRD (DIN)
RITAG
Sizes: DN 50–1400 (2″–56″) • Pressure: PN 10/16/25/40 • Temp: −20°C to +450°C • Body Material: Carbon steel, stainless steel, ductile iron • Connection: Wafer (between flanges) • Opening Pressure: Min. 7 mbar
✓ Wide size range to DN 1400 ✓ Low cracking pressure ✓ Carbon and SS options ✓ DIN standard
ZRD (API)
ZRD (API)
RITAG
Sizes: 2″–56″ • Pressure: ANSI Class 150/300 • Temp: −20°C to +450°C • Body Material: Carbon steel, stainless steel • Connection: Wafer (between flanges) • Opening Pressure: Min. 7 mbar
✓ ANSI Class 150/300 ✓ Wide size range ✓ API standard ✓ Carbon and SS
RITAG
ZRK / ZRL / ZRL-HG — Swing Check Valves
Self-centering swing check valves with a protective stop to prevent disc over-travel and pipe damage. Available in elastic or metal seat options.
ZRK
ZRK
RITAG
Sizes: DN 50–1200 (2″–48″) • Pressure: PN 6/10/16/40 | ANSI Class 150/300 • Temp: Up to +450°C (carbon) / +500°C (SS) • Body: Carbon steel (1.0460/1.0425), SS (1.4301/1.4404) • Seat: Elastic or metal seat
✓ Self-centering disc ✓ Protective over-travel stop ✓ Elastic or metal seat ✓ Carbon and SS body
Best for: general industrial pipe systems and water treatment
ZRL
ZRL
RITAG
Type: Standard swing check valve • Application: Industrial pipe systems and water treatment
✓ Standard duty swing check ✓ Self-centering
ZRL-HG
ZRL-HG
RITAG
Type: Heavy-duty grade swing check valve • Application: Large-diameter or high-pressure water and process pipework
✓ Heavy-duty rated ✓ Large DN range ✓ High-pressure rated
RITAG
SR / HSR / HYPOS — Lift Check Valves
Maintenance-free wafer-type lift check valves for a wide range of process and utility service. Opening pressure from 20 mbar — suitable for low-pressure systems.
SR
SR
RITAG
Sizes: DN 15–200 (½”–8″) • Pressure: PN 6/10/16/40 • Temp: Up to +300°C (carbon) / +500°C (SS) • Type: Wafer lift check valve • Opening Pressure: Min. 20 mbar
✓ Maintenance-free ✓ Wide temperature range ✓ Compact wafer design
HSR
HSR
RITAG
Type: Heavy-duty lift check valve • Application: High-pressure or elevated-temperature service
✓ Heavy-duty rated ✓ High-pressure and temperature
HYPOS
HYPOS
RITAG
Type: Hydraulic piston-operated check valve • Application: Pump discharge and system protection
✓ Hydraulic piston operated ✓ Pump protection ✓ Controlled closure
RITAG
DR — Nozzle Check Valves
Axial-flow nozzle check valves for pump discharge, high-velocity service and water-hammer-critical installations. Fast-acting spring closure minimises surge.
DR
DR
RITAG
Type: Nozzle (axial-flow) check valve • Application: Pump discharge and high-velocity pipework • Features: Spring-loaded, rapid closure, anti-water-hammer
✓ Anti-water-hammer ✓ Axial flow design ✓ Fast spring closure ✓ Pump discharge rated
Best for: pump stations, high-velocity water mains and pipeline protection
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