Erhard Check Valves

Double flanged, tilting disc, swing and nozzle check valves from Erhard — for water, wastewater and industrial process applications from DN 40 up to DN 1400.

Erhard

ERK — Tilting Disc Check Valves

Double-eccentrically mounted free-swinging tilting disc check valves. The offset disc creates a natural closing tendency with flow reduction — minimising water hammer without springs or dashpots.

Double Flanged Check Valves

Erhard

Model: ERK • Sizes: DN 150–1400 • Pressure: PN 10/16/25/40 • Temp: −20°C to +60°C • Body: Ductile cast iron with stainless steel seat ring • Connection: Double flanged • Bearing: Self-lubricating plain bearings

✓ Double-offset disc ✓ No springs or dashpots ✓ Self-lubricating bearings ✓ Low pressure drop

Best for: large-diameter water mains, pumping stations and industrial plant

Erhard

EDRV — Non-Slam Nozzle Check Valves

Spring-loaded nozzle check valves with soft opening and closing characteristics for pump discharge and pipeline protection against water hammer. Full opening at approximately 2 m/s flow velocity.

Nozzle Check Valves

Erhard

Model: EDRV • Sizes: DN 80–600 • Pressure: PN 10/16/25/40 • Temp: Up to −60°C • Min. Back Pressure: 4 mWS (size-dependent) • Connection: Double flanged

✓ Non-slam spring-loaded ✓ Soft opening and closing ✓ Pump discharge protection ✓ Anti-water-hammer

Best for: pump stations, long pipelines and surge-sensitive water systems

Erhard

Swing Check Valves

Self-centering swing check valves with spherical bearing pin design for reliable, low-maintenance operation in water and industrial service.

Swing Check Valves

Erhard

Sizes: DN 50–300 • Pressure: PN 10/16 • Body: Cast or ductile iron with stainless steel seat • Type: Self-centering swing check • Bearing: Spherical bearing pin — medium-free shaft

✓ Self-centering disc ✓ Spherical bearing pin ✓ Low maintenance ✓ Medium-free shaft

Erhard

RFSE — Rubberised Tilting Disc Check Valves

Rapid and silent closing rubberised tilting disc check valves for potable water, raw water and wastewater applications. KTW/W270 rated elastomers ensure drinking water compliance.

Tilting Disc Check Valves

Erhard

Model: RFSE • Sizes: DN 40–300 • Pressure: PN 10/16 • Body: Ductile cast iron with rubber-lined disc • Application: Potable water, raw water and wastewater • Compliance: KTW / W270 rated elastomers

✓ Silent rapid closing ✓ Rubber-lined disc ✓ Drinking water compliant ✓ KTW/W270 rated

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