GEM 687 Operating Instructions Manual
  1. Manuals
  2. Brands
  3. GEM Manuals
  4. Control Unit
  5. 687
  6. Operating instructions manual

GEM 687 Operating Instructions Manual

Pneumatically operated diaphragm valve
Hide thumbs Also See for 687:
Table of Contents

Advertisement

Quick Links

Download this manual
GEMÜ 687
Pneumatically operated diaphragm valve
Operating instructions
EN
further information
webcode: GW-687

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 687 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for GEM 687

Summary of Contents for GEM 687

  • Page 1 GEMÜ 687 Pneumatically operated diaphragm valve Operating instructions further information webcode: GW-687...
  • Page 2 All rights including copyrights or industrial property rights are expressly reserved. Keep the document for future reference. © GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG 25.04.2023 GEMÜ 687 2 / 44 www.gemu-group.com...

  • Page 3: Table Of Contents

    20 Declaration of Incorporation according to the EC Function ............Machinery Directive 2006/42/EC, Annex II, 1.B ..Product label ..........21 Declaration of Conformity according of the Direct- 4 GEMÜ CONEXO ............ ive 2014/68/EU ............ 5 Correct use ............6 Order data ............Order codes ...........

  • Page 4: General Information

    Symbol Meaning 1.3 Definition of terms Danger of explosion! Working medium The medium that flows through the GEMÜ product. Control function Corrosive chemicals! The possible actuation functions of the GEMÜ product. Control medium The medium whose increasing or decreasing pressure causes Hot plant components! the GEMÜ...

  • Page 5: Product Description

    CONEXO diaphragm turer first. RFID chip (see Conexo informa- In cases of uncertainty: tion) 15. Consult the nearest GEMÜ sales office. CONEXO body RFID chip (see Conexo informa- tion) www.gemu-group.com 5 / 44...

  • Page 6: Description

    Traceability number Consecutive number Item number The month of manufacture is encoded in the traceability num- DANGER ber and can be obtained from GEMÜ. The product was manu- Danger of explosion! factured in Germany. ▶ Risk of death or severe injury Do not use the product in potentially ●...

  • Page 7: Order Data

    1.4408, PFA lined NPT female thread 1.4435, investment casting Threaded spigot DIN 11851 Forged material Cone spigot and union nut DIN 11851 1.4435 (F316L), forged body 1.4435 (BN2), forged body, Δ Fe < 0.5% www.gemu-group.com 7 / 44 GEMÜ 687...
  • Page 8 DIN 11866 HE3, electropolished internal/external Ra ≤ 0.6 μm (25 μin.) for media wetted surfaces, 1507 mechanically polished internal Ra ≤ 0.6 µm (25 µin.) for media wetted surfaces, 1508 electropolished internal/external GEMÜ 687 8 / 44 www.gemu-group.com...

  • Page 9: Order Example

    Actuator size F/N 9 Surface 1503 Ra ≤ 0.8 µm (30 µin.) for media wetted surfaces, in accordance with DIN 11866 HE3, electropolished internal/external 10 Special version Special version for 3A 11 CONEXO Without www.gemu-group.com 9 / 44 GEMÜ 687...

  • Page 10: Technical Data

    PTFE diaphragms exposed to high temperature fluctuations. The maintenance cycles must be adapted accordingly. GEMÜ 555 and 505 globe valves are particularly suitable for use in the area of steam generation and distribution. The following valve arrangement for interfaces between steam pipes and process pipes has proven itself over time: A globe valve for shutting off steam pipes and a diaphragm valve as an interface to the process pipes.

  • Page 11: Pressure

    5.0 max. 4.5 max. 3.0 max. 3.0 4.0 - 7.0 5.5 - 7.0 max. 5.0 max. 4.5 max. 3.5 max. 3.5 4.5 - 7.0 MG = diaphragm size All pressures are gauge pressures. www.gemu-group.com 11 / 44 GEMÜ 687...
  • Page 12 0.42 0.40 0.79 0.79 0.69 2.30 1.87 2.30 2.00 Filling volume in dm³ C.f. 3 = for filling volume in open position see c.f. 1, for filling volume in closed position see c.f. 2 GEMÜ 687 12 / 44 www.gemu-group.com...
  • Page 13 Therefore the Kv values may exceed the tolerance limits of the stand- ard. The Kv value curve (Kv value dependent on valve stroke) can vary depending on the diaphragm material and dur- ation of use. www.gemu-group.com 13 / 44 GEMÜ 687...

  • Page 14: Product Conformity

    Belgaqua* * depending on version and / or operating parameters SIL: Product description: GEMÜ diaphragm valve 687 Type of valve: Safety function: Due to the safety function, the diaphragm valve is placed in the closed position (with control function 1) or in the open position (with control function 2).
  • Page 15 1.66 3.40 1.62 1.32 0.93 1.62 4.50 1.50 2.25 1.56 2.70 6.30 2.50 2.20 10.30 2.30 8.60 9.22 10.20 8.90 8.00 9.20 13.80 8.50 24.10 20.80 24.80 Weights in kg MG = diaphragm size www.gemu-group.com 15 / 44 GEMÜ 687...

  • Page 16: Dimensions

    173.0 G 1/4 360.0 475.0 158.0 G 1/4 259.0 372.0 169.0 G 1/4 360.0 477.0 154.0 G 1/4 Dimensions in mm MG = diaphragm size * CT = A + H1 (see body dimensions) GEMÜ 687 16 / 44 www.gemu-group.com...
  • Page 17 360.0 323.0 158.0 110.0 G 1/4 258.0 278.0 165.0 45.0 G 1/4 360.0 319.0 154.0 110.0 G 1/4 Dimensions in mm MG = diaphragm size * CT = A + H1 (see body dimensions) www.gemu-group.com 17 / 44 GEMÜ 687...

  • Page 18: Body Dimensions

    Code 60: Spigot ISO 1127/EN 10357 series C/DIN 11866 series B 2) Valve body material Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% Code F4: 1.4539, forged body GEMÜ 687 18 / 44 www.gemu-group.com...
  • Page 19 Code 17: Spigot EN 10357 series A/DIN 11866 series A formerly DIN 11850 series 2 Code 60: Spigot ISO 1127/EN 10357 series C/DIN 11866 series B 2) Valve body material Code C3: 1.4435, investment casting www.gemu-group.com 19 / 44 GEMÜ 687...
  • Page 20 Code 64: Spigot ANSI/ASME B36.19M schedule 5s Code 65: Spigot ANSI/ASME B36.19M schedule 40s 2) Valve body material Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% Code F4: 1.4539, forged body GEMÜ 687 20 / 44 www.gemu-group.com...
  • Page 21 1.65 2" 30.0 50.80 32.0 173.0 1.65 Dimensions in mm MG = diaphragm size 1) Connection type Code 59: Spigot ASME BPE/DIN 11866 series C 2) Valve body material Code C3: 1.4435, investment casting www.gemu-group.com 21 / 44 GEMÜ 687...
  • Page 22 Code 37: Spigot SMS 3008 2) Valve body material Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% Code C3: 1.4435, investment casting Code F4: 1.4539, forged body GEMÜ 687 22 / 44 www.gemu-group.com...
  • Page 23 165.0 NPT 2 70.0 18.0 Dimensions in mm MG = diaphragm size n = number of flats 1) Connection type Code 31: NPT female thread 2) Valve body material Code 37: 1.4408, investment casting www.gemu-group.com 23 / 44 GEMÜ 687...
  • Page 24 Dimensions in mm MG = diaphragm size 1) Connection type Code 6: Threaded spigot DIN 11851 2) Valve body material Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% GEMÜ 687 24 / 44 www.gemu-group.com...
  • Page 25 MG = diaphragm size 1) Connection type Code 6K: Cone spigot and union nut DIN 11851 2) Valve body material Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% www.gemu-group.com 25 / 44 GEMÜ 687...
  • Page 26 Code 39: 1.4408, PFA lined Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% Code 83: EN-GJS-400-18-LT (GGG 40.3), hard rubber lined Code C3: 1.4435, investment casting GEMÜ 687 26 / 44 www.gemu-group.com...
  • Page 27 Code 38: Flange ANSI Class 150 RF, face-to-face dimension FTF MSS SP-88, length only for body configuration D 2) Valve body material Code 17: EN-GJS-400-18-LT (GGG 40.3), PFA lined Code 18: EN-GJS-400-18-LT (GGG 40.3), PP lined Code 39: 1.4408, PFA lined Code 83: EN-GJS-400-18-LT (GGG 40.3), hard rubber lined www.gemu-group.com 27 / 44 GEMÜ 687...
  • Page 28 Code 39: 1.4408, PFA lined Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% Code 83: EN-GJS-400-18-LT (GGG 40.3), hard rubber lined Code C3: 1.4435, investment casting GEMÜ 687 28 / 44 www.gemu-group.com...
  • Page 29 Code 8T: Clamp DIN 32676 series C, face-to-face dimension FTF EN 558 series 7, length only for body configuration D 2) Valve body material Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% Code F4: 1.4539, forged body www.gemu-group.com 29 / 44 GEMÜ 687...
  • Page 30 Code 8E: Clamp ISO 2852 for pipe ISO 2037, clamp SMS 3017 for pipe SMS 3008 face-to-face dimension FTF EN 558 series 7, length only for body configuration D 2) Valve body material Code 40: 1.4435 (F316L), forged body Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5% Code F4: 1.4539, forged body GEMÜ 687 30 / 44 www.gemu-group.com...

  • Page 31: Manufacturer's Information

    "Technical data"). Leakage 4. Do not store solvents, chemicals, acids, fuels or similar ▶ Emission of dangerous materials. fluids in the same room as GEMÜ products and their spare Provide precautionary measures against exceeding the ● parts. maximum permitted pressures caused by pressure surges (water hammer).

  • Page 32: Installation Position

    3. Insert the corresponding gasket between the body of the product and the pipe connection. 4. Connect the gasket between the body of the product and the pipe connection using clamps. 5. Re-attach or reactivate all safety and protective devices. Fig. 3: Threaded socket GEMÜ 687 32 / 44 www.gemu-group.com...

  • Page 33: Installation With Threaded Spigots

    Control function 3 Double acting (DA): Valve resting position: no defined normal position. The valve is opened and closed by activating the respective control me- dium connectors (connector 2: open/connector 4: close). www.gemu-group.com 33 / 44 GEMÜ 687...

  • Page 34: Connecting The Control Medium

    CAUTION The product has 2 control medium connectors. Cleaning agent Control function Control medium Control medium ▶ Damage to the GEMÜ product. connector 2 (open) connector 4 (close) The plant operator is responsible for selecting the clean- ● 1 (NC) ing material and performing the procedure.

  • Page 35: Control Function 1

    In its resting position the product has no defined normal posi- tion. 1. Activate the actuator via control medium connector 2. ð The product opens. 2. Activate the actuator via control medium connector 4. ð The product closes. www.gemu-group.com 35 / 44 GEMÜ 687...

  • Page 36: Troubleshooting

    Tighten threaded connections / unions Sealing material faulty Replace sealing material Valve body leaking Valve body leaking or corroded Check valve body for damage, replace valve body if necessary * see chapter "Spare parts" GEMÜ 687 36 / 44 www.gemu-group.com...

  • Page 37: Inspection And Maintenance

    16.2.1 Valve disassembly (removing the actuator from the 5. Depressurize the plant or plant component. body) 6. Actuate GEMÜ products which are always in the same po- 1. Move the actuator A to the open position. sition four times a year.

  • Page 38: Mounting The Diaphragm

    Compressor and actuator flange seen from below: Place the compressor loosely on the actuator spindle, fit the recesses D into the guides C. The compressor must be able to be moved freely between the guides. GEMÜ 687 38 / 44 www.gemu-group.com...
  • Page 39 10. Press the diaphragm face tightly onto the backing dia- holes of the actuator. phragm manually so that it returns to its original shape and fits closely on the backing diaphragm. www.gemu-group.com 39 / 44 GEMÜ 687...
  • Page 40 6. Fully tighten the bolts with nuts diagonally. 7. Ensure even compression of the diaphragm (approx. 10 to 15%). ð Even compression is detected by an even outer bulge. 8. With the valve fully assembled, check the function and tightness. GEMÜ 687 40 / 44 www.gemu-group.com...
  • Page 41 Returned goods can be processed only when this note is completed. If no return delivery note is included with the product, GEMÜ cannot process credits or repair work but will dispose of the goods at the operator's expense.

  • Page 42: Machinery Directive 2006/42/Ec, Annex Ii, 1.B

    Declaration of Incorporation according to the EC Machinery Directive 2006/42/EC, Annex II, 1.B for partly completed machinery Manufacturer: GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG Postfach 30 Fritz-Müller-Straße 6-8 D-74653 Ingelfingen-Criesbach Description and identification of the partly completed machinery: Make: GEMÜ...
  • Page 43 Module H1 Note for equipment with a nominal size ≤ DN 25: The products are developped and produced according to GEMÜ process instructions and quality standards which comply with the requirements of ISO 9001 and of ISO 14001. According to section 4, paragraph 3 of the Pressure Equipment Directive 2014/68/EU these products must not be identified by a CE-label.
  • Page 44 GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG Fritz-Müller-Straße 6-8, 74653 Ingelfingen-Criesbach, Germany Subject to alteration Phone +49 (0) 7940 1230 · info@gemue.de www.gemu-group.com 04.2023 | 88245875...

Table of Contents