Kitz SGE Manuale utente
Document No.: KE-2032-01
Operation Manual
For
SGE Type Butterfly Valves
Thank you for choosing KITZ products.
For safe and trouble-free function and performance of the product, make sure
to read and understand all of the items included in this manual before valve
mounting and operation. Keep this manual in a convenient place and accessible
to the valve operating personnel.
Document No.: KE-2032-01
This manual applies to the KITZ SGE type butterfly valves.
For electric or pneumatic valve operation, refer to the operation manual prepared by the manufactures of
the relevant valve actuators.
SAFETY CAUTIONS
For the safe use of the product, read all of the safety precautions in this manual before handling the product.
The safety precautions in this manual are determined to ensure safe and proper use of the product and to
prevent personal injury and property damage. This manual uses two terms, Warning and Caution,
according to the hazard level, to clearly indicate the extent and severity of the risk.
Both Warning and Caution indicate important safety instructions. Please be sure to follow them.
Indicates an imminently hazardous situation that, if not avoided, may
result in serious injury or death.
Indicates a potentially hazardous situation that, if not avoided, may result
in minor or moderate injury and product damage.
Indicates a careful attention.
Indicates a prohibited action that must not be carried out.
Indicates a mandatory action that must be carried out.
NOTES TO USERS
This manual is designed to show an appropriate usage of the products for transportation, storage,
installation, operation and maintenance. Be sure to read through this manual before handling the
products.
This manual does not cover the whole scope of conceivable usage of the products for transportation,
storage, installation, operation and maintenance. If technical assistance beyond the scope of this
manual is required, contact KITZ Corporation or its distributors.
The specifications have been determined with safety consideration. Do not use products beyond the
specifications.
The illustrations given in this manual do not show all the details. If more detailed information is required,
refer to our relevant valve assembly drawings.
*Any information provided in this operation manual is subject to change without prior notice.
Document No.: KE-2032-01
Contents
I. Construction and Design Features
1. Construction and Function･･････････････････････････････････2
2. Product Coding ････････････････････････････････････････････3
3. Design Features････････････････････････････････････････････3
4. Specifications･･････････････････････････････････････････････4
5. Piping Couplings････････････････････････････････････････････4
II. Transportation and Storage
1. Precautions････････････････････････････････････････････････6
2. Transportation ･････････････････････････････････････････････7
3. Storage････････････････････････････････････････････････････7
III. Valve Installation
1. Precautions････････････････････････････････････････････････9
2. Before Installation ･･････････････････････････････････････････10
IV. Valve Operation
1. Precautions････････････････････････････････････････････････12
2. Lever Handle Type ･････････････････････････････････････････13
3. Gear Type ･････････････････････････････････････････････････14
4. Daily Inspection ････････････････････････････････････････････15
V. Periodic Inspection
1. Precautions････････････････････････････････････････････････17
2. Inspections ････････････････････････････････････････････････18
Document No.: KE-2032-01 1/18
I. Construction and Design Features
Document No.: KE-2032-01 2/18
O ring
（EPDM/NBR）
Disc
（DUCTILE IRON+EPDM/NBR）
Body
（DUCTILE IRON+NYLON）
Disc
（DUCTILE IRON+EPDM/NBR）
O ring
（EPDM/NBR）
Bearing
（METAL BACKED PTFE）
Bottom stem
（SUS420J2Q）
End plate
（CARBON STEEL）
Bearing
（METAL BACKED PTFE）
Body
（DUCTILE IRON+NYLON）
Bottom stem
（SUS410/SUS420J2）
Plug
（ZDC2）
I. Construction and Design Features
1. Construction and Function
1.1The valve construction and the part names are as shown below.
1.2 Rotation of the stem by 90°opens or closes the valve.
1.3 Designed for use in fully open position, fully closed position, or half-open position. *
1.4 A center drive mechanism is provided.
1.5 Bi-directional flow is possible.
* Cavitation may occur if the valve is used with the slightly open position.
Contact KITZ if the valve is required to be used in the slightly open position.
Nominal size 50 to 200A
Bearing
(POLYACETAL)
Stem
（SUS410
/SUS420J2Q）
Bush
（STAINLESS STEEL）
Stem
（SUS420J2Q）
Gland plate
（CARBON STEEL）
Nominal size 250 to 300A
Document No.: KE-2032-01 3/18
I. Construction and Design Features
2. Product Coding
N: NBR
Operator No indication: hand lever, G: worm gear
Nominal pressre: 300psi
CE 100 Nominal size (mm)
Ｇ-300SGE
Seat material CE: Chlorine resistant EPDM
Type: SGE Type
3. Design Features
3.1 The external surface and the wetted surface of the body are nylon-lined to prevent corrosion.
3.2 A rubber lined disk is installed.
3.3 The face-to-face dimensions comply with MSS SP-67.
3.4 The actuator mounting flanges comply with ISO 5211.
3.5 The stem is designed to be blow-out proof so that the stem does not protrude even the operator is
removed.
3.6 Double sealing is provided to the stem section to prevent external leakage.
3.7 Long neck design for easier installation of 50 mm insulation.
3.8 Grooved dimensions comply with AWWA C606-15.
3.9 Chlorine resistant EPDM is used for the longer life time of the valve. (Only SGECE: EPDM Seat)
Document No.: KE-2032-01 4/18
I. Construction and Design Features
4. Specifications
4.1 Maximum service pressure ： 2.1 MPa (300 psi)
4.2 Temperature range of service fluid
EPDM Seat ： -20℃ to ＋110℃
(Continuous service temperature range ： 0℃ to ＋100℃)
NBR Seat ： 0℃ to ＋70℃
4.3 Pressure ‐Temperature rating
Pressure-Temperature Rating
Pressure [MPa]
2.1 SGECE
SGEN
-20 1100Temperature [℃]
70
5. Piping Couplings
Use conformable couplings with AWWA C606-15.
Document No.: KE-2032-01 5/18
II. Transportation and Storage
Document No.: KE-2032-01 6/18
II. Transportation and Storage
1. Precautions
(1) Do not come close to the valve lifting area.
(2) Use a hanging bolt or hold the valve neck section securely for lifting. Using the lever
handle or handwheel for lifting may damage the product by falling down.
(3) Do not give any impact to the valve by dropping, throwing or dragging.
(4) Do not pile up valves for storage. Unstable piling may
damage the valves or cause personal injury.
(5) Do not store the valve with the carton boxkept open. The valve function may be impaired due to the
intrusion of foreign objects.
(6) Do not expose packaged valves to rainwater, etc. High humidity may
deteriorate the package.
(7) Store valves in a dry and well-ventilated indoor place.
Document No.: KE-2032-01 7/18
II. Transportation and Storage
2. Transportation
2.1 Keep valves in the original packages during transportation and until just before installation.
2.2 High humidity may damage the strength of carton cases. Care shall be taken when handling such
deteriorated carton cases.
2.3 Take care not to damage painted valve surfaces during transportation. Repair the damaged surface to
prevent corrosion.
3. Storage
3.1 Place the packaged valves on the pallet, etc., for storage. Placing packaged valves directly on the ground
or concrete floor must be avoided.
3.2 Do not store valves in a corrosive environment. It may cause corrosion on the threaded areas, leading to
a malfunction of valve.
3.3 Do not place any objects on valves, or do not step on them. Overloading may damage the valve.
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