695 Diaphragm Valve, Metal Construction The GEMÜ 695 pneumatically operated 2/2-way diaphragm valve has a low maintenance membrane actuator which can be controlled by inert gaseous media. Normally Closed, Normally Open and Double Acting control functions are available. Features • Suitable for inert and corrosive* liquid and gaseous media • Insensitive to particulate media • Valve body and diaphragm available in various materials and designs • Surface finishes down to 0.25 µm, electropolished • Versions according to ATEX on request • Optical position indicator is standard for control function 1 Advantages • Optional flow direction • Installation for an optimized draining is possible • Weight-saving design • Optional accessories: - Stroke limiter - Optical position indicator control function 2 + 3 - Manual override (GEMÜ 1002, GEMÜ 1004) - Pilot valve with manual override (GEMÜ 0322 - 0326) - Electrical position indicator Sectional drawing *see information on working medium on page 2
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Sectional drawing - gemu-group.com · Sectional drawing *see information on working medium on page 2. 695 2 Technical data ... length MSS SP-88 38 Flanges ANSI Class 125/150 RF, length
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695
Diaphragm Valve,Metal
Construction The GEMÜ 695 pneumatically operated 2/2-way diaphragm valve has a low maintenance membrane actuator which can be controlled by inert gaseous media. Normally Closed, Normally Open and Double Acting control functions are available.
Features• Suitable for inert and corrosive* liquid and gaseous media • Insensitive to particulate media• Valve body and diaphragm available in various materials and designs• Surface finishes down to 0.25 µm, electropolished• Versions according to ATEX on request• Optical position indicator is standard for control function 1
Advantages• Optional flow direction• Installation for an optimized draining is possible• Weight-saving design• Optional accessories:
- Stroke limiter - Optical position indicator control function 2 + 3 - Manual override (GEMÜ 1002, GEMÜ 1004) - Pilot valve with manual override (GEMÜ 0322 - 0326) - Electrical position indicator
Sectional drawing
*see information on working medium on page 2
695 2
Technical data
Working mediumCorrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemical properties of the body and diaphragm material.The valve will seal in both flow directions up to full operating pressure. (All pressures are gauge pressures.)
Operating pressure [bar] Control pressure [bar]Diaphragm
All pressures are gauge pressures. Operating pressure values were determined with static operating pressure applied on one side of a closed valve. Sealing at the valve seat and atmospheric sealing is ensured for the given values.Information on operating pressures applied on both sides and for high purity media on request.
TemperaturesMedium temperature -10 ... 80 °CAmbient temperature 0 ... 60 °C
Control mediumMax. perm. temperature of control medium 40 °CFilling volume
Actuator size Control function 1 Control function 21/N 0,17 dm³ 0,11 dm³2/N 0,38 dm³ 0,23 dm³3/N 1,10 dm³ 0,54 dm³
C.f. 3 = for filling volume in open position see c.f. 1, for filling volume in closed position see c.f. 2
Kv values [m³/h]Pipe standard DIN EN 10357
series B (formerly DIN 11850 series 1)
EN 10357 series A (formerly DIN 11850 series 2) / DIN 11866 series A
MG = diaphragm size Kvvaluesdeterminedacc.toDINEN60534,inletpressure5bar,∆p1bar,stainlesssteelvalvebodyandsoftelastomerdiaphragm. The Kv values for other product configurations (e.g. other diaphragm or body materials) may differ. In general, all diaphragms are subject to the influences of pressure, temperature, the process and their tightening torques. Therefore the Kv values may exceed the tolerance limits of the standard.
6953
1 2 3 4 5 6 7 8 9 100
6
5
4
3
2
1
DN 32/40
DN 15-25
DN 50/65
Steuerfunktion 2 + 3Control functions 2 + 3
The values shown relate to control function 2 (with opening spring).For control function 3 (without opening spring) control pressure is approx. 1 bar lower.
The control pressure depending on the prevailing operating pressure, as shown in the diagram, is intended as a guide for operating the system with low wear on the diaphragm.
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Technical data
6954
Order data
Valve body material CodeEN-GJL-250, (GG 25) (Cast iron) 8EN-GJS-400-18-LT (S.G. Iron 40.3), PFA lined 17EN-GJS-400-18-LT (S.G. Iron 40.3), PP lined 181.4435 (ASTM A 351 CF3M ≙ 316L), investment casting 341.4408, investment casting 371.4408, PFA lined 391.4435 (316L), forged body 401.4435 (BN2), forged body Fe<0.5% 42EN-GJS-400-18-LT (S.G. Iron 40.3), hard rubber lined 831.4539, forged body F4
Control function Code Normally closed (NC) 1Normally open (NO) 2Double acting (DA) 3
Diaphragm material CodeNBR 2FPM 4EPDM 13EPDM 14EPDM 17PTFE/EPDM convex, PTFE loose 5EPTFE/EPDM, PTFE lamin. 52Material complies with FDA requirements, except codes 2, 4 and 14The combination of PFA lining with 5E diaphragms is only conditionally suitable for gaseous media. If low seat leakage rates are required for gaseous media, other combinations are preferable.
Body configuration Code2/2-way body D
Connection CodeButt weld spigotsSpigots DIN 0Spigots EN 10357 series B (formerly DIN 11850 series 1) 16Spigot EN 10357 series A (formerly DIN 11850 series 2) / DIN 11866 series A 17Spigots DIN 11850 series 3 18Spigots JIS-G 3447 35Spigots JIS-G 3459 36Spigots SMS 3008 37Spigots BS 4825 Part 1 55Spigot ASME BPE / DIN 11866 series C 59Spigot ISO 1127 / EN 10357 series C / DIN 11866 series B 60Spigots ANSI/ASME B36.19M Schedule 10s 63Spigots ANSI/ASME B36.19M Schedule 40s 65Threaded connectionsThreaded sockets DIN ISO 228 1Threaded sockets NPT 31Threaded spigots DIN 11851 6One side threaded spigot, other side cone spigot and union nut, DIN 11851 62Aseptic unions on requestFlangesFlanges EN 1092 / PN16 / form B, length EN 558, series 1, ISO 5752, basic series 1 8Flanges ANSI Class 150 RF, length MSS SP-88 38Flanges ANSI Class 125/150 RF, length EN 558, series 1, ISO 5752, basic series 1 39Clamp connectionsClamps ASME BPE for pipe ASME BPE, length ASME BPE 80Clamps DIN 32676 series B for pipe EN ISO 1127, length EN 558, series 7 82Clamps ASME BPE for pipe ASME BPE, length EN 558, series 7 88Clamps DIN 32676 series A for pipe DIN 11850, length EN 558, series 7 8AClamps SMS 3017 for pipe SMS 3008, length EN 558, series 7 8EAseptic clamps on requestFor overview of available valve bodies see page 13
6955
Order data
Order example 695 25 D 60 34 17 1 1/N 1500Type 695Nominal size 25Body configuration (code) DConnection (code) 60Valve body material (code) 34Diaphragm material (code) 17Control function (code) 1Actuator size (code) 1/NSurface finish (code) 1500
Internal surface finishes for forged and block material bodies 1
Readings for Process Contact Surfaces
Mechanically polished 2 ElectropolishedHygienic class
Internal surface finishes for investment cast bodies
Readings for Process Contact Surfaces
Mechanically polished 2
Hygienic class DIN 11866 Code
Ra≤6.30μm - 1500Ra≤0.80μm H3 1502Ra≤0.60μm - 1507
1 Surface finishes of customized valve bodies may be limited in special cases.2 Or any other finishing method that meets the Ra value (acc. to ASME BPE).3 The maximum Ra finish achievable for pipe connections with an internal pipe diameter < 6 mm is 0.38 µm.4 When using these surfaces, the bodies are marked according to the specifications of ASME BPE. The surfaces are only available for valve bodies which are made of materials (e.g. GEMÜ material codes 40, 41, F4, 44) and use connections (e.g. GEMÜ connection codes 59, 80, 88) according to ASME BPE.
Ra acc. to DIN EN ISO 4288 and ASME B46.1
6695
6
CT*
A1
A
øB
G
CT*
A
A
1
G
øB
G
A2
Actuator dimensions [mm]
Control function 1MG DN ø B A A1 G Weight
[kg]25 15 - 25 125 145 47 G 1/4 1,540 32 - 40 155 194 75 G 1/4 3,050 50 - 65 210 240 90 G 1/4 5,5
2515 X X X W W - W - K - X* X X W X W X - - - - X* X X W X W X*20 X X X W W K K K K - X* X X W X W X X X** X X* X* X X W X W X*25 X X X W W K K K K K X* X X W X W X X X** X X* X* X X W X W X*
4032 X X X W W - W - K K X* X X W X W X - - - - X* X X W X W X*40 X X X W W K W K K K X* X X W X W X X X** X X* X* X X W X W X*
5050 X X X W W K W K K K X* X X W X W X X X** X X* X* X X W X W X*65 - - - - - W - W - W - - - - - - - - - - - - - - - - - -
* Valve bodies are not suitable for use with diaphragms code 5E.** Connection code 38 / material code 18 on requestX = StandardK = Connections completely machined (not welded)W = Welded constructionAvailability of material code 42, F4: same as code 40MG = diaphragm size