Disk, Swiding and double plate wafer check valves

For more than 25 years RITAG retention valves have been present in installations that require the prevention of fluid backflow, with a large range of manufacture, high quality, flexibility and price, makes them market leaders in their sector.

The range consists of retention disc valves SR/HSR, of swing check valves ZRK, of double plate valves ZRD/HZRD and special swing check valves ZRL, the largest range in the market for retention devises, making RITAG your best choice.

Their principle applications are the retention of all types of liquids, gases and steam, being present in the chemical, petrochemical, pharmaceutical industries and all types of process plants, marine, etc…

SR/HSR (DISC)

• DN15 ? DN200 (1/2” – 8”)
• PN10 ? PN160 (150Lbs – 2500Lbs)
• Available in metal/metal closing or with elastic soft seat rings
• Operating Temperature: -220ºC – +550ºC
• Distance between the faces EN 558 parts 1 and 2, series 49 and 52

ZRK (SWING CHECK)

• DN50 – DN1200 (2” – 42”)
• PN10 – PN40 (150Lbs ? 600Lbs)
• Materials: Bronze, stainless steel, stellite, polypropylene
• Available in metal/metal closing or with elastic soft seat rings
• Operating Temperature: -270ºC – +450ºC
• Designed according to API 6D

These valves can be manufactured with special accessories like counterweight, external end position indicators, hydraulic adjust of opening and closing (version ZRL, large design EN 558-1 series 16)

ZRD/HZRD (DOUBLE PLATE)

• DN50 – DN2000 (2” – 80”)
• PN10 – PN160 (150Lbs – 2500Lbs)
• Materials: Marine Bronze, stainless steel, Hastelloy C, AISI 904L, nodular cast iron covered with ebonite, monel
• Operating Temperature: -270ºC – +550ºC
• Distance between the faces EN 558-1 series 16 (until PN40) and API 594 design.

These valves can be manufactured under demand with male female connections according to DIN 2512 N o F, o RTJ according to ANSI B.16.5

SR 91/92/93.16
RITAG check valves that comply with the highest standards that exist for the pharmaceutical and alimentation industries. They are characterised for lacking dead zones, have a minimum polished interior of 0.8 pm and fulfils the exigencies of FDA.

• DN8 ? DN100 (1/4” – 4”)
• PN16 (150Lbs)
• Materials: Stainless steel 1.4435, EPDM (FDA)
• Operating Temperature: -10ºC – +140ºC