Check valves

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	PN 6, 10 and 16 DN 32 to DN 500 CTA-Vela SC
	Applications
	industries, installations, water- and sewage treatment, chemical and process technologies, petrochemicals
	Product features
	wafer type check valve for mounting between flanges resilient seated disc reliable construction, with or without spring O-Rings for inside and outside sealing extreme short face to face dimensions
	Materials and corrosion protection
	body materials: Aluminium, carbon steel nickel plated brass, gun metal or stainless steel (1.4305, 1.4408 oder 1.4571) disc in stainless steel (1.4301 oder 1.4571) O-Rings in NBR, EPDM, FPM (Viton) or PTFE coated spring in stainless steel (1.4571) or Hastelloy (2.4610)

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	PN 10 and 16 DN 50 to DN 600 CTA-Vela DC
	Applications
	industries, installations, water- and sewage treatment, chemical and process technologies, petrochemicals
	Product features
	wafer type dual plate check valves for mounting between flanges resilient seated plates reliable construction, maintenance free O-Rings for inside and outside sealing face to face dimensions acc. to EN 558-1 series 16 (DIN 3202/K3)
	Materials and corrosion protection
	body materials: ductile iron EN-JS 1030 (GGG-40) or stainless steel (1.4408) plates in EN-JS 1030 (GGG-40), Alu-Bronze or stainless steel (1.4408) stem in stainless steel (1.4301 or 1.4401) seals in NBR, EPDM, FPM (Viton), metal seated on request spring in stainless steel (1.4301 or 1.4401)

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	PN 10 and 16 DN 50 to DN 300 CTA-Vela GC
	Applications
	water- and sewage treatment, industries, building installations
	Product features
	rubber flap non-return valve, flanges acc. to EN 1092 part 2 resilient seated flap disc full bore opening, maintenance free lifting device on request face to face dimensions acc. to EN 558-1 series 48 (DIN 3202/F6)
	Materials and corrosion protection
	body materials: grey cast iron acc. to EN-JL 1040 (GG-25) flap disc: ductile iron EN-JS 1030 (GGG-40) flap disc vulcanized with EPDM or NBR body fusion bonded epoxy powder coated

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	PN 10 and 16 DN 150 to DN 1400 CTA-Vela KC
	Applications
	water supply, water treatment applications
	Product features
	check valve with tilting disc design replaceable, resilient EPDM seal-ring no fluttering of the disc in the flow with lever and drop weight; optional: hydraulic damping device on request with protecting cage face to face dimensions acc. to EN 558-1 series 14 (DIN 3202/F4)
	Materials and corrosion protection
	body materials and disc in ductile iron EN-JS 1030 (GGG-40); other materials on request stem in stainless steel (1.4021) body seat weld overlay stainless steel bodies and disc inside and outside epoxy coated up to DN 1200 fusion bonded epoxy powder coating (EP-P); DN 1400 two component epoxy coating

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	PN 10 to 400 DN 25 to DN 2200 CTA-Vela VC
	Applications
	oil and gas pipelines, iron and steel mills, chemical plants, pumping stations in water works, power plants, gas compressor stations, etc.
	Product features
	check valve slam-free design very low pressure loss resilient seated and metal seated available maintenance-free conception friction-free movement of the disc ring (from DN 300)
	Materials and corrosion protection
	body and diffuser (outer and inner) cast iron EN-JL 1040 (GG-25) or cast carbon steel (GP240GH+N) or stainless steel seat in stainless steel (1.4057, 1.4059 or 1.4581) disc in stainless steel (1.4057, 1.4059, 1.4571 or 1.4581) spring in stainless steel (1.4571)

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	PN 10 and 16 DN 50 to DN 300 CTA-Vela RC
	Applications
	water supply, sewage treatment, power plants, industries
	Product features
	Rückschlagklappe metallisch oder weich dichtend Baulänge nach EN 558-1, Grundreihe 48 (DIN 3202/F6)
	Materials and corrosion protection
	body materials and disc in cast iron EN-JL 1040 (GG-25) inside and outside epoxy powder coated

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