Lined check valves
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Lining PFA, PTFE, PFA-L antistatic Liquids, vapours and gases Vertical, inclined or horizontal installation Richter Lined Check Valves

© Lining virgin pure PFA or PTFE • Suitable for corrosive, hazardous, pure, hot and highly permeating media • Thick-walled, high permeation resistance • Vacuum-resistant anchoring • Lining optionally antistatic available © Shell made of ductile cast iron EN-JS 1049 (ASTM A395) absorbs system and pipe forces © Shut-off elements: solid and hollow balls as well as solid and hollow plugs made of PTFE. For special cases made of stainless steel, Hastelloy® etc. • Gas-tight sealing: series SR-B, SRV-B and SRZ-V optionally with soft-sealing fluorocaoutchouc seat sealing. • Series GR and RV...

Installation: horizontal, inclined, vertical pipe • CV, BC series: with solid ball • CVV, BCV series: with hollow ball • Tightness: DIN EN 12266-1, leakage rate D, test medium gas These ball check valves have a hydraulically optimised design. The lining thickness of 4 to 5 mm offers very high permeation resistance. The CV and BC series with a solid ball seal against a falling or backflowing liquid. The CVV and BCV versions with a hollow ball can also be used for low opening differential pressures. If the installation position is reversed, CVV and BCV can also work as vacuum check and...

CV, BC, SR, GR, RV, PRS SR, SRV, SR-B, SRV-B and Tightness: SR SRZ-V series with integrated • and SRV: DIN EN 12266-1, leakage rate D, test medium gas sight glass Installation: horizontal, inclined, vertical (SRZ-V, only vertical) pipe • series with solid ball SR • SRV series with hollow ball • SR-B series with solid ball and soft-sealing seat • SRV-B with hollow ball and ­ oft-sealing seat s • SRZ-V series with hollow plug and soft-sealing seat The SRV and SRV-B versions with hollow balls can also be used for low opening differential pressures. • SR-B, SRV-B, SRZ-V: gas-tight to With...

Pressure/vacuum/temperature range Temperature in °F CV, BC, SR, GR, RV, PRSMaterials, dimensions, weights, pressure/temperature diagram Components and materials Item 1 for lining PFA conductive: PTFE/carbon PFA-L = PFA conductive (antistatic) 2) k in m3/h (water 20 °C, 68 °F). Conversion to Cv = kv x 1.165 (US gpm) or Cv = kv x 0.971 (IMPgpm)

Other Richter check valves RV series • I installation: vertical pipe • -60 to 180 °C (-75 to 360 °F) • Vacuum 100 mbar to 10 bar (1,45 to 145 psi) • DN 150 (6“), face-to-face 240 mm, K-value 400 m3/h (1760 US gpm) and DN 200 (8“), 280 mm, 500 m3/h (2200 US gpm) • Gas-tight to DIN EN 12266-1, leakage rate A, test medium gas • Body: ductile cast iron EN-JS 1049 (ASTM A395), lining PTFE • Seat and plug exchangeable • Flanges ISO 7005-2 PN16, on request drilled to ASME Cl.150 (ISO 7005-2 PN20) Details on pressure/temperature range, materials, dimensions, etc. on request PRS series The PRS...