Grey Russian Standard GOST Gate ValveSTANDARDTechinical
Specifications:Design and manufacture: Russian StandardWorking
pressure: PN10 / PN16Main Parts and Material:ItemPart
NameMaterial1BodyWCB2DiscWCB+2Cr133BonnetWCB4Stem2Cr13Main
Dimensions:Unit:
mmDN5080100150200250300D160195215280335405460L180210230280330450500For
other sizes not mentioned above, please contact us.We have right to
change the data without further notice.Cast steel gate valve can
only be fully opened and closed, but can not be adjusted and
throttled.The advantages of Cast Steel Gate Valve: fluid resistance
is small, the sealing surface is subjected to small media
erosioncorrosion. It saves effort to open and close. Medium flow
direction is not restricted, no turbulence, no pressure
reduction.Simple structure, short structure length, good
manufacturing technology, high temperature and high pressure
resistance of optional materials, a wide range of application.Cast
Steel Gate Valve Installation:1. Check the valve cavity and sealing
surface and other parts before installation, no dirt or sand
particles attached;2. Bolts at all connection parts should be
tightened evenly;3. Check the packing parts to ensure the sealing
of the packing and flexible opening of the gate;4. Before
installing the Cast Steel Gate Valve, the user must check the valve
model, connection size and pay attention to the medium flow to
ensure consistency with the valve requirements;5. When installing
Cast Steel Gate Valve, the user must reserve the necessary space
for the valve drive;6. Wiring of the driving device shall be
carried out according to the circuit diagram;7. The Cast Steel Gate
Valvemust be maintained regularly. Collision and extrusion are not
allowed, so as not to affect the seal. Note:1) The
installation position, height and import and export direction must
meet the design requirements, and the connection should be firm and
close.2) The handle of all kinds of manual valves installed on the
insulation pipeline shall not be downward.3) The appearance
inspection must be carried out before installation of the valve,
and the nameplate of the valve should comply with the provisions of
the current national standard "General Valve Mark" GB 12220. For
the valve whose working pressure is greater than 1.0 Mpa and plays
a cutting role on the main pipe, the strength and tight performance
test should be carried out before installation, and the qualified
rear can be used. During the strength test, the test pressure is
1.5 times of the nominal pressure, and the duration is not less
than 5min. The valve shell and packing should be qualified without
leakage. When the tightness test, the test pressure is 1.1 times of
the nominal pressure; The test pressure shall meet the requirements
of GB 50243 standard during the test duration, and no leakage on
the sealing surface of the valve disc shall be regarded as
qualified.Remark:* Handwheel, handle and transmission mechanism are
not allowed to be used for lifting, and collision is strictly
prohibited.* Double disc gate valves shall be installed vertically
(i.e. stem in vertical position with handwheel at top).* Gate
valves with bypass valves should be opened before opening (to
balance inlet and outlet pressure difference and reduce opening
force).* Gate valves with drive mechanism shall be installed
according to the instructions of the product.* Lubricate the valve
at least once a month if it is used frequently
on/off.PackageUsually packed by plywood crates or pallets.For
correct Transporting operation, please also refer to:It is
important to apply a few simple chocking and lashing rules to
minimize the risks of incident during transport.Vehicles must be
suitable for the transport, loading and uploading of ductile iron
pipes and fittings. Apply the following basic rules:-Prevent any
contact between the valve elements and metal surfaces (to avoid
damaging the coatings).-Make sure the valves do not come into
direct contact with the trailer floor (store the pipes horizontally
by placing two parallel rows of good quality wooden planks fastened
to the floor).-Make sure that the valves can be loaded and unloaded
in complete safety.-Make sure that the load is secure during
transport.-Always use vehicles or trailers with sufficiently large
stanchions fitted on each side of the floor to stabilize the
load.-Lash the load with textile straps and lever
tensioners.Company Profile
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