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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Erhard — German Valve Engineering

Erhard, part of the global Talis Group, is one of Germany’s leading manufacturers of industrial valves for water supply, wastewater and hydropower. PureSys India supplies the following Erhard product lines for water infrastructure projects in India.

Gate Valves — MULTAMED Series

EH1100P — Multamed Gate Valve (Short)

Erhard

Resilient-seated gate valve with full epoxy coating (inside and outside) for potable water distribution. Wedge fully encapsulated in EPDM for tight shut-off. Suitable for underground installation.

Sizes	DN 50 to DN 600
Pressure	PN 10 / PN 16
Standard	EN 1074, EN 558 Series 14/15
Coating	Epoxy ~250 microns (food grade)
Body	Ductile iron GGG50

EH1170P — Multamed Gate Valve (Long)

Erhard

Long face-to-face version of the Multamed resilient gate valve. Used where BS 5163 or longer face-to-face dimensions are required — common in Indian water utility projects.

Sizes	DN 50 to DN 600
Pressure	PN 10 / PN 16
Face-to-face	EN 558 Series 15 / BS 5163
Wedge	Ductile iron, EPDM encapsulated

Butterfly Valves — ROCO & ECLA Series

EH2010P — ROCO Wave Butterfly Valve

Erhard

Concentric butterfly valve with EPDM-lined body and epoxy-coated disc. The ROCO Wave profile reduces operating torque and improves flow characteristics, making it ideal for large diameter water mains.

Sizes	DN 50 to DN 2000
Pressure	PN 10 / PN 16
Disc	Ductile iron, epoxy coated
Seal	EPDM body liner
Standard	EN 593

EH2510 — ECLA Centric Butterfly Valve (Wafer)

Erhard

Compact wafer-type concentric butterfly valve for space-constrained installations. Suitable for water treatment plants, pumping stations and irrigation systems.

Sizes	DN 40 to DN 1200
Pressure	PN 10 / PN 16 / PN 25
Type	Wafer (between flanges)
Seal	EPDM / NBR

EH2520 — ECLA Centric Butterfly Valve (Flanged)

Erhard

Flanged version of the ECLA concentric butterfly valve. Easier to install and remove for maintenance. Popular for pump discharge and control applications.

Sizes	DN 40 to DN 1200
Pressure	PN 10 / PN 16 / PN 25
Type	Double flanged
Seal	EPDM / NBR

Air Valves — TWIN-AIR Series

EH7700P — TWIN-AIR Air Valve

Erhard

Triple-function automatic air valve for water pipelines. Releases large volumes of air during pipeline filling, re-admits air during draining to prevent vacuum collapse, and continuously releases entrained air during operation. Essential for high points in transmission mains.

Sizes	DN 25 to DN 200
Pressure	PN 10 / PN 16
Function	Triple: large orifice / small orifice / vacuum break
Body	Ductile iron, epoxy coated
Internals	Stainless steel float and seat
Standard	EN 1074-4

Check Valves

EH7400 — ERK Tilting Disc Check Valve

Erhard

Tilting-disc non-return valve for large-diameter pump discharge pipelines. Low head loss, fast closure before flow reversal to prevent water hammer. Used in pumping stations and rising mains.

Sizes	DN 300 to DN 2400
Application	Pump discharge, rising mains
Type	Tilting disc
Closure	Spring-assisted, anti-water-hammer

EH7490 — SWING Check Valve

Erhard

Swing-type non-return valve for water and sewage systems. Simple, reliable design for applications where backflow prevention is required on horizontal or vertical pipelines.

Sizes	DN 50 to DN 600
Versions	Potable water / Waste water (EH7494)
Type	Swing disc
Body	Ductile iron, epoxy coated

Penstocks — WAGU Series

EH1900/EH1901/EH1902 — WAGU Penstocks

Erhard

Cast iron penstocks for flow control in water treatment plants, reservoirs, irrigation head works and hydropower intakes. Available in face-on-seating (CL), guided lift (GL/GK) and PRO versions. Custom sizes to project specification.

Types	WAGU CL / GL-GK / PRO
Application	Water treatment, reservoirs, irrigation, hydropower
Material	Cast iron / ductile iron
Operation	Handwheel, motorised or hydraulic actuator