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The GEMU 653 / 654 manually operated 2/2-way metal diaphragm valve has a stainless steel bonnet and is available in two versions - GEMU 653 has a handwheel in high temperature and chemically resistant plastic, GEMU 654 a stainless steel handwheel. The handwheel is non-rising and has a standard optical position indicator. Two bonnet versions are available: for 2-way bodies, and for T-bodies or multi-port bodies.

Features
  • Suitable for inert and corrosive liquid and gaseous media
  • CIP / SIP cleaning and sterilizing capabilities
  • Autoclavable
  • Insensitive to particulate media
  • Surface finishes down to 0.25 m, electropolished
  • Designed according to GMP (Good Manufacturing Practice)
Advantages
  • The handwheel design allows minimal heat sink thus reducing the danger of burns injuries
  • The service life of the diaphragm is increased to a maximum by the patented optional seal adjuster (US-patent 6,691,737 B2)
  • Optional flow direction, will seal in either flow direction up to full operating pressure
  • Optional mounting position
  • Option
    • Lockable handwheel
    • Mounting for proximity switches for position feedback

Specifications

Note Please click "Magnifying Glass" next to the attributes listed below to view helpful information.
Type 653 654
Nominal Size DN 10 DN 100 DN 15 DN 20 DN 32 DN 40 DN 50 DN 65 DN 80
Body Configuration
2/2-way body Multi-Port Design T Valve Body Tank valve body
Connection Butt Weld Spigots ASME BPE Butt Weld Spigots BS 4825, Part 1 Butt Weld Spigots DIN Butt Weld Spigots DIN 11850, Series 1 Butt Weld Spigots DIN 11850, Series 2 Butt Weld Spigots DIN 11850, Series 3 Butt Weld Spigots DIN 11866, series A Butt Weld Spigots EN ISO 1127 Butt Weld Spigots JIS-G 3447 Butt Weld Spigots JIS-G 3459 Butt Weld Spigots SMS 3008 Clamps ASME BPE for pipe ASME BPE length EN 558-1, series 7 Clamps ASME BPE for pipe ASME BPE, short design Clamps DIN 32676 for pipe DIN 11850 length EN 558-1, series 7 Clamps following ASME BPE for pipe EN ISO 1127, length EN 558-1 series 7 Clamps SMS 3017 for pipe SMS 3008 length EN 558-1, series 7 Flanges ANSI class 125/150 RF length EN 558-2, series 1 ISO 5752, basic series 1 (ex DIN 3202-1, series F1) Flanges ANSI class 125/150 RF length MSS SP-88 Flanges EN 1092 - PN10/16 - form B, (ex DIN 2501 / PN16 / form C) length EN 558-1, series 1 ISO 5752, basic series 1 (ex DIN 3202-1, series F1) One side threaded spigot, other side cone spigot with union nut, DIN 11851 Threaded spigots DIN 11851
Valve Body Material 1.4408, PFA lined 1.4435 - BN2 (CF3M) - investment casting Fe<0.5% 1.4435 (316L) Block Material 1.4435 (316L) forged body 1.4435 (ASTM A 351 CF3M) investment casting (Material equivalency 316 L) 1.4435 (BN2), block material Fe<0.5% 1.4435 (BN2), forged body Fe<0.5%
Diaphragm Material1 EPDM, max. 130°C (Material complies with FDA requirements) EPDM, max. 150°C (Material complies with FDA requirements) EPDM, max. 150°C (Material complies with FDA requirements) EPDM, max. 150°C (Material complies with FDA requirements) FPM PTFE/EPDM convex PTFE loose, max. 150°C (Material complies with FDA requirements) PTFE/EPDM PTFE laminated PTFE/FPM convex PTFE loose, max. 150°C PTFE/Silicone convex PTFE loose, max. 160°C (Material complies with FDA requirements)
Control Function Manually Operated
Bonnet Size Diaphragm size 10 Diaphragm size 100 Diaphragm size 25 Diaphragm size 40 Diaphragm size 50 Diaphragm size 80
Bonnet Version Bonnet for special function (only with bolt holes for all body configurations) Bonnet with bolt holes for all body configurations (diaphragm size 10 - 100) Bonnet with enclosed threads for body config. D (diaphragm size 10 - 50)
Bonnet Function
Only with seal adjuster (diaphragm size 80 - 100) With seal adjuster and stroke limiter (diaphragm size 10 - 50) With seal adjuster, stroke limiter and mounting for proximity switches M 8x1 With seal adjuster, stroke limiter and safety gland packing With seal adjuster, stroke limiter, locking device (both directions) and mounting for proximity switches M 8x1 With seal adjuster, stroke limiter, locking device to prevent closing and mounting for proximity switches M 8x1 With seal adjuster, stroke limiter, locking device to prevent opening and mounting for proximity switches M 8x1 Without seal adjuster and without stroke limiter
Surface Finish2 Ra ≤ 0.25 µm, electropolished internal/external Ra ≤ 0.25 µm, mechanically polished internal, blasted external Ra ≤ 0.4 µm, electropolished internal/external Ra ≤ 0.4 µm, mechanically polished internal,blasted external Ra ≤ 0.6 µm, electropolished internal/external Ra ≤ 0.6 µm, mechanically polished internal, blasted external Ra ≤ 0.8 µm, electropolished internal/external Ra ≤ 0.8 µm, mechanically polished internal, blasted external Ra ≤ 6.3 µm, blasted internal/external Ra ≤ 6.3 µm, electropolished internal/external
Working Medium Corrosive, inert, liquid and gaseous media which have no negative impact on the physical and chemical properties of the body and diaphragm material.
Bonnet Material 653 handwheel: PPS glass filled 654 handwheel: A4 stainless steel Bonnet: A4 stainless steel Cap (DN 10 - DN 40): PEEK Cap (DN 50 - DN 100): PES
Max. Ambient Temperature Accessory MAG: 35 ºCStandard: 60 ºC

Note

N/A The valve will seal against flow in either direction up to full operating pressure (pressures are given as gauge pressures).

  • 1 Steam sterilization temperature / 20 min
  • 2 Ra acc. to DIN 4768; at defined reference point.