550 Construction The GEMÜ 550 pneumatically operated 2/2 way angle seat globe valve has a low maintenance piston actuator. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a long service life. The wiper ring fitted in front of the gland packing protects it against contamination and damage. Features • Suitable for inert and corrosive* liquid and gaseous media • Substantially reduced installation dimensions when using the body with male threads which can be installed using union nuts • Materials of all medium wetted parts can be selected to suit relevant applications • Higher media temperatures • Versions according to ATEX on request Advantages • Stainless steel actuator for simple cleanability, corrosive atmospheres • Various types of valve body connections • Good flow capability • Low weight • Optical position indicator is standard for NC control function (optional for NO and DA control functions). • Accessories: - Electrical position indicators - Combi switchboxes - Electro-pneumatic positioners/process controllers (see data sheet GEMÜ 550 control valve) - Stroke limiter • Suitable for contact with food according to Regulation (EC) No. 1935/2004 • Standard gland packing suitable for vacuum up to 20 mbar (abs.) Actuator 0 and 1 Actuator 2 to 5 Angle Seat Globe Valve, Metal *See information on working medium on page 2 Sectional drawing
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550
ConstructionThe GEMÜ 550 pneumatically operated 2/2 way angle seat globe valve has a low maintenance piston actuator. The valve spindle is sealed by a self-adjusting gland packing providing low maintenance and reliable valve spindle sealing even after a long service life. The wiper ring fitted in front of the gland packing protects it against contamination and damage.
Features• Suitable for inert and corrosive* liquid and gaseous media • Substantially reduced installation dimensions when using the body with
male threads which can be installed using union nuts• Materials of all medium wetted parts can be selected to suit relevant
applications• Higher media temperatures• Versions according to ATEX on request
Advantages• Stainless steel actuator for simple cleanability, corrosive atmospheres• Various types of valve body connections• Good flow capability• Low weight• Optical position indicator is standard for NC control function (optional for
NO and DA control functions).• Accessories:
- Electrical position indicators - Combi switchboxes - Electro-pneumatic positioners/process controllers (see data sheet GEMÜ 550 control valve) - Stroke limiter
• Suitable for contact with food according to Regulation (EC) No. 1935/2004
• Standard gland packing suitable for vacuum up to 20 mbar (abs.)
Actuator 0 and 1
Actuator 2 to 5
Angle Seat Globe Valve, Metal
*See information on working medium on page 2
Sectional drawing
5502
Technical data
Control mediumInert gasesMax. control pressure: 8 barMax. perm. temperature of control medium: 60 °C
Ambient conditionsMax. ambient temperature 60 °C
Working mediumCorrosive, inert, gaseous and liquid media which have no negative impact on the physical and chemical properties of the body and seal material.Max. perm. pressure of working medium see tableMedium temperature -10 °C to 180 °CMax. permissible viscosity 600 mm²/s (cSt)Other versions for lower/higher temperatures and viscosities on request.
All pressures are gauge pressures. When the flow is over the plug (M), there may be the danger of water hammer with liquid media!For max. operating pressures the pressure/temperature correlation must be observed (see table on page 3).
Maximum permissible seat leakage rateSeat seal Standard Test procedure Leakage rate Test medium
Kv values determined acc. to DIN EN 60534. The Kv value data refers to control function 1 (NC) and the largest actuator for each nominal size. The Kv values for other product configurations (e.g. other connections or body materials) may differ.
Control pressure [bar]C. f. 1 Normally closed (NC) / Flow direction: under the seat
Actuator size1G1, 2G1, 3G1, 4G1 4 - 8
0G1, 5G1 5 - 8C. f. 1 Normally closed (NC) / Flow direction: over the seat
0M1, 1M1, 2M1, 3M1 max. 7 barHigher control pressures on request.
C. f. 2 Normally open (NO) / C. f. 3 Double acting (DA) / Flow direction: under the seatfor values see diagram see page 5
Bleed hole in the actuatorTo bleed the control medium, the pneumatic actuator has a bleed hole that is located on the side of the actuator housing (con-trol function normally closed). In certain areas of application (e.g. the foodstuff industry), dirty water or cleaning media could enter through this bleed hole and penetrate the actuator, thereby adversely affecting correct operation. A special bleed system with lip check valve is available for these applications, which prevents such functional impairment. The bleed hole at the side is then closed.
Pressure / temperature correlation for angle seat globe valve bodiesConnection
codeMaterial
codeMax. allowable operating pressures in bar at temperature °C*RT 100 150 200 250 300
17, 59, 60 C2 25.0 21.2 19.3 17.9 16.8 15.9* The valves can be used down to -10°C ** max. temperature 140 °C RT = Room Temperature All pressures are gauge pressures.
Standard bleed hole Special bleed system K no. 6996
Technical data
5504
0
1
2 4 6 8 10
2
3
4
5
6
7
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 6 / 8 / 10 / 15
0
1
2 4 6 8 10
2
3
4
5
6
7
DN 20DN 15
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 25
DN 32
DN 40DN 50
0
1
2 4 6 8 10
2
3
4
5
6
7
DN 20Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 25
DN 40
DN 32
DN 50
0
1
2 4 6 8 10
2
3
4
5
6
7
DN 20
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 8-15
DN 25
Actuator size 0M1Min. control pressure dependent on operating pressure
Actuator size 1M1Min. control pressure dependent on operating pressure
Operating pressure / Control pressure characteristics Control function 1: normally closed (NC) / Flow direction: over the seat
Actuator size 2M1Min. control pressure dependent on operating pressure
Actuator size 3M1Min. control pressure dependent on operating pressure
Operating pressure [bar]
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Con
trol p
ress
ure
[bar
]
Con
trol p
ress
ure
[bar
]
Con
trol p
ress
ure
[bar
]
Operating pressure [bar]
Operating pressure [bar]
5505
0
1
5 10 15 20 25
2
3
4
5
6
8
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 6 / 8 / 10 / 15
7
0
1
5 10 15 20 25
2
3
4
5
6
8
DN 20
DN 25
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 15
DN 40 DN 32
7
0
1
5 10 15 20 25
2
3
4
5
6
8
DN 20
DN 25
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 40
DN 32
DN 50
7
0
1
5 10 15 20 25
2
3
4
5
6
8
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 40
DN 32
DN 50
7
0
1
5 10 15 20 25
2
3
4
5
6
8DN 80
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
DN 65
DN 40
DN 32
DN 50
7
0
1
5 10 15 20 25
2
3
4
5
6
8DN 20DN 25
DN 8-15
Ste
uerd
ruck
[bar
]
Betriebsdruck [bar]
7
Actuator size 2G1Min. control pressure dependent on operating pressure
Actuator size 3G1Min. control pressure dependent on operating pressure
Actuator size 4G1Min. control pressure dependent on operating pressure
Actuator size 5G1Min. control pressure dependent on operating pressure
Actuator size 0G1Min. control pressure dependent on operating pressure
Actuator size 1G1Min. control pressure dependent on operating pressure
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Operating pressure [bar]
Con
trol p
ress
ure
[bar
]
Operating pressure / Control pressure characteristicsControl function 2: normally open (NO) / Control function 3: double acting (DA)
Flow direction: under the seat
5506
MG*
Order data
Connection CodeButt weld spigotsSpigots DIN 0Spigots EN 10357 series B 16Spigots EN 10357 series A (formerly DIN 11850 series 2) / DIN 11866 series A 17Spigots DIN 11850 series 3 18Spigots SMS 3008 37Spigots ASME BPE 59Spigots 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 socket Rc ISO 7-1, EN 10226-1, JIS B 0203, BS 21, end-to-end dimension ETE DIN 3202-4 series M8 3CThreaded spigots DIN ISO 228 9Threaded sockets NPT length DIN 3202-4 series M8 3DFlangesFlanges EN 1092 / PN25 / form B, 10 length EN 558, series 1Flanges EN 1092 / PN25 /form B, 13 length see body dimensionsFlanges ANSI Class 125/150 RF, 47 length see body dimensions Clamp connectionsClamps ASME BPE for pipe ASME BPE, 80 length ASME BPE Clamps DIN 32676 series B for pipe EN ISO 1127, 82 length EN 558, series 1Clamps DIN 32676 series A for pipe DIN 11850, 86 length EN 558, series 1Clamps ASME BPE for pipe ASME BPE, 88 length EN 558, series 1
Valve body material Code1.4435 (ASTM A 351 CF3M 316L), Investment casting 341.4408, Investment casting 371.4435 (316 L), Forged body 401.4435, Investment casting C2*Material equivalency 316L* A surface finish from the order code table „K number“ must be specified for valve body material C2.
Body configuration Code2/2-way body DAngle body Eonly in material code 37 (DN 15 - 50)
Control function CodeNormally closed (NC) 1Normally open (NO) 2Double acting (DA) 3
Seat seal CodePTFE 5PTFE, glass fibre reinforced 5GPTFE, USP Class VI 5P
Actuator size CodeActuator 0 piston ø 28 mm 0Actuator 1 piston ø 42 mm 1Actuator 2 piston ø 60 mm 2Actuator 3 piston ø 80 mm 3Actuator 4 piston ø 100 mm 4Actuator 5 piston ø 130 mm 5
Spring set CodeStandard 1
Flow direction CodeUnder the seat G*Over the seat M**** only control function NC
* Preferred flow direction with incompressible media to avoid “water hammer“
For further order data see page 7
5507
Order example 550 15 D 1 37 5 1 1 G 1 -
Type 550Nominal size 15Body configuration (code) DConnection (code) 1Valve body material (code) 37Seat seal (code) 5Control function (code) 1Actuator size (code) 1Flow direction (code) GSpring set (code) 1Version (code) -
Order data
Version CodeMedia temperature -10 to 210 °C (only with seat seal Code 5G and 10) 2023Special bleed system in the actuator 6996All special versions only available ex worksSurface finish for valve body material C2
Ra ≤ 0.6 μm (25 μinch) for process contact surfaces, in accordance with ASME BPE SF2 + SF3, mechanically polished internal 1903Ra ≤ 0.8 μm (30 μinch) for process contact surfaces, in accordance with DIN 11866 H3, mechanically polished internal 1904Ra ≤ 0.4 μm (15 μinch) for process contactsurfaces, in accordance with DIN 11866 H4, ASME BPE SF1, mechanically polished internal 1909Ra ≤ 0.6 μm for process contact surfaces, in accordance with ASME BPE SF6, electropolished internal/external 1953Ra ≤ 0.8 μm for process contact surfaces, in accordance with DIN 11866 HE3, electropolished internal/external 1954Ra ≤ 0.4 μm for process contact surfaces, in accordance with DIN 11866 HE4/ASME BPE SF5, electropolished internal/external 1959
Version for food contactFor food contact, the product must be ordered with the following ordering options:Seat seal code 5, 5GValve body material code 34, 37, 40, C2
5508
max
B
45°
H
G
G
M
A2
BM
45°
H
G
Gmax
Actuator dimensions [mm]
Actuator size 2 - 5Actuator size 0, 1
Actuator dimensionsActuator size øB M H
max* G A2
0 32 M 12x1 6 M5 35.41 46 M 16x1 12 G 1/8 53.02 63 M 16x1 22 G 1/8 -3 84 M 16x1 28 G 1/4 -4 104 M 22x1.5 32 G 1/4 -5 135 M 22x1.5 41 G 1/4 -
H max*: dependent on nominal size
5509
CT
45°
LA
SW1
45°
G
Installation dimensions - Valve with 2/2-way body [mm]
The dimensions stated refer to control function 1 (normally closed NC),for control function 2 (normally open NO) the dimensions are smaller.
DN 8 - - - - - - - - X - - - - - - -DN 10 X - - - - - - - X - - - - - - -DN 15 X X X X X X X X X X X X X X* X XDN 20 X X X X X X X X X X X X X X* X XDN 25 X X X X X X X X X X X X X X* X XDN 32 X X X X X X - X X X X - - X* X XDN 40 X X X X X X X X X X X X X X* X XDN 50 X X X X X X X X X X X X X X* X XDN 65 X - X X X - - - X - X - X - - -DN 80 X - X X X - - - X - X - X - - -
*For possible combinations with actuator sizes see table page 16
Overview of metal bodies for GEMÜ 550 with actuator size 1, 2, 3, 4, 5Spigots
DN 8 - - - - - - - - - - - - - X - -DN 10 - X X - X - - - - - - X - X - -DN 15 X X X X X X - - X - X X X X X XDN 20 X X X X X X - - X - X X X X X XDN 25 X X X X X X X - X - X X X X X XDN 32 - X X X X X - - - - - X X X - XDN 40 X X X X X X X - X - X X X X X XDN 50 X X X X X X X - X - X X X X X XDN 65 - - - X X - - X - X X - X X X -DN 80 - - - X X - - X - X X - X X X -