Richter Lined Check Valves

Transcription

1 Publication No. 46en 0.6 Richter Chemie-Technik GmbH. Subject to change without notice. Printed in Germany. ining PFA, PTFE, PFA- antistatic iquids, vapours and gases Vertical, inclined or horizontal installation CV, BC, SR, GR, RV, PRS Richter ined Check Valves

2 Richter check valves They prevent from back-flow of liquids, gases and vapours in pipelines. They are installed e.g. in the discharge line, directly downstream of the pump, to prevent the siphoning of the pump or pump rotation in the opposite direction as a result of back-flowing liquids when vessels have to be vented/aerated within approximate setting ranges. Richter check valves are designed for media where stainless steel does not offer lasting corrosion resistance as an alternative to valves made of exotic expensive metals (Hastelloy, Monel, tantalum etc.) for pure and slightly solids-laden media for metal-reactive media, e.g. H O for pure media where good cleaning possibilities and anti-adhesive surfaces are important. Operating range: Depending on design and material from -60 to +80 C (-7 to 60 F) with EN-JS 049 from -9 to +80 C (-0 to 60 F) with ASTM A9 from vacuum up to 6 bar ( psi) Installation and connecting dimensions ISO/DIN: face-to-face lengths DIN EN 88-, basic series (ISO 7, basic series ). Flange connecting dimensions: DIN EN 09-, shape B (ISO 700-, type B), on request drilled to ANSI 0 Face-to-face lengths Peabody-Dore (BC/BCV series) ANSI/ISA Cl. 0 with flanges acc. to ASME B6. Cl. 0 raised face (series GR) ANSI/ISA Cl. 00 with flanges acc. to ASME B6. Cl. 00 raised face for series GR, /, on request. ining virgin pure PFA or PTFE Suitable for corrosive, hazardous, pure, hot and highly permeating media Thick-walled, high permeation resis tance Vacuum-resistant anchoring ining optionally antistatic available Shell made of ductile cast iron EN-JS 049 (ASTM A9) 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 generally gas-tight sealing. 4 Horizontal, inclined or vertical installation External corrosion protection Epoxy coating, nuts and bolts of stainless steel. 6 Identification DIN EN 9, ASME B6.4 7 PED Pressure Equipment Directive The valves are suitable for liquids, vapours, gases of group. Series selection The operating conditions are so varied that the Richter range contains a large number of check valves: Series selection CV CVV BC BCV SR SR-B SRV SRV-B SRZ-V GR RV PRS ISO face-to-face Peabody-Dore/ASME face-to-face Gas-tight in seat Seat or seat seal replaceable Horizontal installation Vertical installation Inclined installation* Operating pressure > bar (4. psi) Vacuum-tight Operating temperature > 00 C (0 F) Operating temperature < -0 C (- F) Integrated sight glass function Top-entry design * Guidance in centre under ball

3 CV, CVV (ISO) and BC, BCV (ASME) series Installation: horizontal, inclined, vertical pipe CV, BC series: with solid ball CVV, BCV series: with hollow ball Tightness: DIN EN 66-, leakage rate D, These ball check valves have a hydraulically optimised design. The lining thickness of 4 to 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 aeration valves. When installed vertically, the ball then floats on the rising liquid and seals upwards into the seat. When installed horizontally, a minimum differential pressure of bar (4. psi) with a hollow ball 0. bar (7. psi) is necessary so that the ball is pressed into the seat. GR series Installation: horizontal pipe Only with solid plug Tightness: gas-tight to DIN EN 66-, leakage rate A, GR check valves are designed as plug valves and intended for horizon tal installation. Seat and plug are exchangeable. Thanks to the top-entry design, the valve can be opened from the top and serviced. ining thickness: -6 mm, +0 ( / + /4 ).-4 mm H Ø d Ø d 4 Ø d Ø d 4 Fig.: CV, BC series, vertical installation, sealing against falling liquid. Fig.: GR series, horizontal installation, sealing against back-flowing liquids, vapours, gases

4 SR, SRV, SR-B, SRV-B and SRZ-V series with integrated sight glass Installation: horizontal, inclined, vertical (SRZ-V, only vertical) pipe SR series with solid ball SRV series with hollow ball SR-B series with solid ball and soft-sealing seat SRV-B with hollow ball and soft-sealing seat SRZ-V series with hollow plug and soft-sealing seat Tightness: SR and SRV: DIN EN 66-, leakage rate D, SR-B, SRV-B, SRZ-V: gas-tight to DIN EN 66-, leakage rate A, These series make it possible to observe the function of the check valve through thick sight glasses made of borosilicate glass to DIN The functions of a straight-through sight glass are fulfilled. The solid ball SR and SR-B versions seal against a falling or back-flowing liquid. The SRV and SRV-B versions with hollow balls can also be used for low opening differential pressures. With reversed installation position, SRV and SRV-B also function as vacuum check and aeration valves. The ball then floats on the rising liquid and seals upwards into the seat. When installed horizontally, a mini - mum differential pressure of bar (4. psi) with a hollow ball 0. bar (7. psi) is necessary to press the ball into the seat. The hollow plug version SRZ-V functions in the same way as SRV and SRV-B but for a much larger pressure/temperature range, see diagram on page a 4 a Ø d Ø d 4 B Ø d Ø d 4 B Fig.: SR series, vertical installation, sealing against falling liquid, without seat seal Fig.: SRZ-V series, vertical installation, sealing against rising liquids, with hollow plug and soft-sealing seat seal 4

5 Materials, dimensions, weights, pressure/temperature diagram Components and materials Item Designation Materials 00 Body and Shell Ductile cast iron EN-JS body end (ASTM A9) piece ining see separate table 06 Cover Ductile cast iron EN-JS 049 (ASTM A9), GR series optionally GS-C (.069) 4 Sight glass pane Borosilicate glass (e.g. Maxos ) Ball PTFE ), optionally stainless steel, Hastelloy etc. 04 Plug Modified PTFE ) 0 Seat Modified PTFE ) 408 Flat gasket Aramide 4 Seat seal FFKM (optional for SR-B, SRV-B, SRZ-V) Round cord PTFE 80 Guide Modified PTFE ) 8 Stem Modified PTFE ) w/o No. Screws, nuts ) for lining PFA conductive: PTFE/carbon Stainless steel Installation and connecting dimensions: CV, CVV, GR, SR, SR-B, SRV, SRV-B, SRZ-V series to ISO 700- PN 6 ) ) D k d d 4 nxd a (mm) (inch) / x4-0 / x x / x x / x x x9 0* x - * 0 (6 ) from BC/BCV series, face-to-face not to ISO/DIN, 00 mm (4 ) bore Nominal sizes, lining materials, k V (Cv) values and weights DIN/ISO series CV, CVV SR, SR-B, SRV GR (mm) series SRV-B, SRZ-V ) series series ining ) ) k v kg ining ) ) k v kg ining ) ) k v kg PFA PFA PFA PFA-.. 0 PFA PFA PFA-.. PFA PFA- 7. PFA PFA- (SRZ-V: 0) 6. PFA PFA PFA PFA PFA PFA- 8.9 PFA PFA- 8, 0 PFA PFA-.6 PFA PFA- 0 (SRZ-V: ) 4. PFA PFA PFA PFA PFA PFA PFA- 00 PFA PFA- PFA PFA PFA PFA PFA PFA 4 0 PFA PFA from BC / BCV series ASME (ANSI) series BC, BCV GR (inch) series series ining ) ) k v kg ining ) ) k v kg / PFA PFA- 7.8 PFA PFA-.. /4 PFA PFA- PFA PFA-.. PFA PFA-.7 PFA PFA- 0 / PFA PFA PFA PFA PFA PFA PFA PFA / PFA PFA PFA PFA- 60 PFA 4 6 PFA PFA ) PFA- = PFA conductive (antistatic) ) k v in m /h (water 0 C, 68 F). Conversion to Cv = k v x.6 (US gpm) or Cv = k v x 0.97 (IMPgpm) ) SRZ-V: only +0 ( + ) Pressure/vacuum/temperature range Vacuum in mbar Gauge pressure in bar CV, BC, GR, SR, SR-B 0 9 SRZ-V Installation and connecting dimensions: BC, BCV, GR series to ASME Cl. 0 (ISO 700- PN0) and Peabody-Dore. Series GR to ASME Cl. 00 on request D k d 6) d 4 nxd H (mm) (inch) Series BC, GR BC, GR BC, BC, GR BC, GR BCV BCV BCV, BCV, BCV, GR GR GR / 0 ) ) 0 /4 0 ) x ) 8 4) 4x / x x x x ) x - ) not to Peabody-Dore ) tapped bore 4x / - UNC ) GR series: 8 mm SR-B SRV-B SR-B Temperature in F Temperature in C 4) plastic sealing strip ) passage 4 6) BC/BCV without metallic sealing strip CVV, BCV, SRV, SRV-B 0 ining PFA Vacuum in psia Gauge pressure in psig

6 Other Richter check valves RV series Installation: vertical pipe -60 to 80 C (-7 to 60 F) Vacuum 00 mbar to 0 bar (,4 to 4 psi) 0 (6 ), face-to-face 40 mm, k v -value 400 m /h (760 US gpm) and (8 ), 80 mm, 00 m /h ( US gpm) Gas-tight to DIN EN 66-, leakage rate A, Body: ductile cast iron EN-JS 049 (ASTM A9), lining PTFE Seat and plug exchangeable Flanges ISO 700- PN6, on request drilled to ASME Cl.0 (ISO 700- PN0) Details on pressure/temperature range, materials, dimensions, etc. on request PRS series The PRS overflow valve can also be used at low differential pressures to prevent the back-flow of gases, vapours and liquids. The seat/plug combination pretensioned with cup springs seals reliably. Installation: horizontal and vertical pipe -60 to 0 C (-7 to 0 F) Vacuum to 6 bar ( psi) ( ), face-to-face 60 mm Gas-tight to DIN EN 66-, leakage rate A, Body: ductile cast iron EN-JS 049 (ASTM A9), lining PTFE Plug, guide etc. exchangeable Flanges ISO 700- PN6, on request drilled to ASME Cl. 0 (ISO 700- PN0) Presented by: 6 RV series Richter = TM Richter Chemie-Technik GmbH MAXOS = TM Schott AG Hastelloy = TM of Haynes International Monel = TM of Special Metals Corp. PRS series Richter Chemie- Technik GmbH Otto- Schott- Str., D Kempen, Germany Tel. +49(0) /46-0, Fax +49(0) / richter-info@idexcorp.com Publication No. 46en 0.6 Richter Chemie-Technik GmbH. Subject to change without notice. Printed in Germany.