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Richter Chemie Technik
Diaphragm shut-off and control valves

Diaphragm shut-off and control valves

Product catalog summary

Overview: The document provides detailed specifications and features of Richter diaphragm shut-off and control valves, which are lined with PFA/PTFE and optionally with antistatic PFA-L. These valves are designed for use in handling corrosive, pure, and ultrapure liquids, gases, and vapors in various industrial processes.

Specifications:

Lining: Thick-walled PFA lining with a thickness of 3-3.5 mm, offering high permeation resistance and vacuum-proof anchoring. Antistatic PFA-L is available on request.
Diaphragm: Made of modified PTFE, providing greater fatigue strength, dimensional stability, and lower permeability. It includes an all-round sealing bead to prevent residue accumulation.
Materials: Components such as the bonnet, handwheel, valve stem, and compressor are made of stainless steel 1.4408 (CF8M). The pressure-bearing body is made of ductile cast iron EN-JS 1049 or ASTM A395.

Features:

Hermetic glandless sealing against the valve bonnet and atmosphere, with an optional safety stuffing box.
Adjustable travel stop to limit seating thrust and prevent diaphragm damage.
Optional secondary O-ring sealing made of FKM (e.g., Viton®) for additional protection.
PTFE/graphite bearing to minimize friction.
Top-entry design allows maintenance without dismantling.

Performance:

Operating pressures range from -30 to +150 °C, with rated pressures of PN 16 (up to DN 50 or 2”) and PN 10 (DN 80 or 3” and larger).
Leakage rate in the seat is gas-tight, complying with DIN EN 12266-1, leakage rate A.
Anti-adhesive wetted PFA/PTFE surfaces suitable for clean-room applications.

Applications: These valves are suitable for use in chemical, pharmaceutical, food, and industrial processes, handling solids-free or slightly solids-laden media.

Actuation Options:

Manual actuation (MV, MVM) and remote actuation (MVP, MVMP) with pneumatic or electric actuators.
Accessories such as positioners and limit switches are available.

Dimensions and Weights: The document provides detailed dimensions and weights for various valve sizes, with specific face-to-face lengths according to ISO 5752-R 1 and MSS SP-88 standards.

Conclusion: Richter diaphragm valves are reliable, cost-effective, and widely used for their ease of use and durability in handling a variety of media in demanding industrial environments.

Catalog excerpts

Publication No. 411en 02.16 © Richter Chemie-Technik GmbH. Subject to change without notice. Printed in Germany. Richter = Trademark of Richter Chemie-Technik GmbH, Viton = Trademark of Du Pont Lining PFA/PTFE, optionally PFA-L antistatic Hermetically tight Long-life modified PTFE diaphragm Richter Diaphragm Shut-Off and Control Valves

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Diaphragm shut-off and control valves Richter diaphragm valves are easy to use and reliable. They are reasonably priced and are therefore some of the most widely used shut-off, control and throttling valves. • PFA/PTFE lined diaphragm valves are used for corrosive, pure and ultrapure liquids, gases and vapours in chemical, pharmaceutical, food and industrial processes. • Hermetically tight • FDA-compliant, wetted PFA and PTFE materials • Soft-sealing, gas-tight • Operating pressures from -30 to +150 °C • Rated pressure: PN 16 (up to DN 50 or 2“), PN 10 (DN 80 or 3“ and larger); for operating...

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© Diaphragm made of modified PTFE The quality and functionality of the diaphragm are crucial for the reliability and durability of the valve. Top priority is given to these aspects in Richter diaphragm valves. • Greater fatigue strength under reversed bending stresses and dimensional stability even after many switching cycles and at fluctuating temperatures • Higher density and lower permeability • All-round sealing bead limits the medium chamber exactly and thus prevents residues in sealing gaps which are difficult to flush • Thick-walled, more permeation-resistant than diaphragms made of laminated...

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Dimensions, weights, materials Dimensions (mm) for face-to-face lengths ISO 5752-R 1, MSS SP-88 1) Conversion to Cv = kv x 1.165 (USgpm) or Cv = kv x 0.971 (IMPgpm) 2) manually actuated, value from ISO face-to-face Presented by: RICHTER Process Pumps &. Valves ttsr FLUID & METERING Richter Chemie- Technik GmbH Otto-Schott-Str. 2, D-47906 Kempen, Germany Tel. +49(0)21 52/146-0, Fax +49(0)21 52/146-190 www.richter-ct.com, [email protected] Publication No. 411en 02.16 © Richter Chemie-Technik GmbH. Subject to change without notice. Printed in Germany. Richter = Trademark of Richter Chemie-Technik...

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Diaphragm shut-off and control valves

Diaphragm shut-off and control valves

Catalog excerpts

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