Lloyds
List lloyds
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face to face dimensions conform to api 6d
testing conform to api598
material of single-disc swing check valve parts
part name material
body astm a182 f304
a216 wcb
disc / plate astm a182 f304
a216 wcb
a536 65-45-12
shaft / stem ss431/ss420/ss410/ss304
seat / lining nbr/epdm/viton
bolts carbon steel
nuts stainless steel
spring ss304/ss306
sing-disc swing check valve features
the structure length is short, its structure length is only 1/4~1/8 of the traditional flange check valve
small size, light weight, its weight is only 1/4~1/20 of the traditional flange check valve
the valve disc closes quickly and the water hammer pressure is small
both horizontal and vertical pipes can be used, easy to install
smooth flow channel, fluid resistance is small
sensitive action and good sealing performance
short disctravel, low valve closing impact
the overall structureis simple and compact, beautiful appearance
long service lifetime and high reliability
related types of check valves:
we have other types of check valves: dual plate check valve, tilting disc swing check valve, lift swing check valve, silent check valve, ball check valve used in oil, gas, marine industry, water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with nominal diameter of dn50 to dn1200, nbr/epdm/viton, certificates & approvals: dnv-gl, lloyds, dnv, bv, api, abs, ccssingle-disc swing check valve (th-ckv-sds)
area of application
marine industry, water supply and drainage, fire fighting, shipbuilding, water treatment and other systems
data sheet of single-disc swing check valve
type: wafer, single disc
size & connections: dn50 to d600
medium: air, inert gas, oil, seawater, waste water, water
materials: cast iron / ductile iron/ carbon steel / stainless
steel / alu bronze
pressure rating: pn10, pn16
temperature: -30°c to 200°c
seat/lining: replaceable liner / bonded liner
nbr/epdm/viton
certificates & approvals: dnv-gl, lloyds, dnv, abs, bv type approval
3standards: en 593, api609, api6d2 cert (on request)
standards
design and manufacture conform to api 6d
dimensions conform to ansi b16India
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the medium can flow in any direction on both sides, easy to installthe gate valve can only be fully opened and fully closed, and cannot be adjusted or throttledusually, the sealing surface will be welded with metal materials to increase wear resistance, such as 1cr13, stl6, stainless steel, etc
gate valves generally have two sealing surfaces, adding some difficulties to processing, grinding and maintenance5
face to face dimensions conform to en558-1, api 594, din3202
testing conform to en12266-1, api598
material of gate valve parts
part name material
body cast iron; ductile iron; stainless steel; carbon steel
disc / flap stainless steel; carbon steel; bronze
shaft / stem brass, stainless steel monel; stainless steel inconel
seat / lining nbr/epdm/viton
ss/bronze
bolts carbon steel
nuts stainless steel
gasket/packing graphite
name plate aluminum
washer steel
handwheel cast iron
bushing/ring cast brass
actuation
worm-gear/hand-wheel
electric-actuator
pneumatic-actuator
hydraulic-actuator
gate valve features
advantages:
low flow resistancethe movement direction of the gate plate is perpendicular to the direction of the fluidcom/watch?v=ai-lt1dy2su
less effort when opening and closingthe gate valve is sealed by the contact of the valve seat and the gate plateaccording to the different gate plates, the gate valve is divided into a rigid gate valve and an elastic gate valve
the structure is compact, the valve has good rigidity, the channel is smooth, the flow resistance is small, the sealing surface is made of stainless steel and hard alloy, and the service life is long
the shape is simple, the structure length is short, the manufacturing process is good, and the application range is widea gate valve is a gate plate of an opening and closing part2 cert (on request)
standards
design and manufacture conform to awwa, bs5163, din-f4,f5
dimensions conform to en1092-2,ansi b16
during the opening and closing process, there is relative friction between the sealing surfaces, which can easily cause scratches
large height and long opening and closing time
related types of valves:
we can also produce check valve, globe valve, knife gate valve and ball valve with api, jis, din standard, used in oil, gas, marine industry, water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with nominal diameter of dn50 to dn1200, nbr/epdm/viton, certificates & approvals: dnv-gl, lloyds, dnv, bv, api, abs, ccs
water hammer phenomenon is not easy to producethe space required for installation is large
disadvantages
the overall dimensions and opening height are largestandards: en 593, api609, api6d,
more video of gate valve, please see: https://www
area of application
marine industry, water supply & drainage, fire fighting, shipbuilding, water treatment, power stations, energy, food, chemical, and other systems
data sheet of gate valve:
type: wafer, double flange
size & connections: resilient seated: dn50 to d600
metal seated: dn50 to dn1200
medium: waste water, water, seawater, air, inert gas, oil
materials: cast iron / ductile iron/ carbon steel / stainless
steel / alu bronze
pressure rating: pn10, pn16, pn25
temperature: -30°c to 200°c
seat/lining: replaceable liner / bonded liner
nbr/epdm/viton; ss/bronze
certificates & approvals: dnv-gl, lloyds, dnv, abs, bv type approval
3the gate has a rigid gate and an elastic gatethe use of ptfe packing is reliable and easy to operatethe reason is the long shutdown time
the structure length is smallIndia
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Working pressure: pn10/pn16
size: from dn40-dn1200
operator: bare shaft with iso 5211 top flange, handlever and gearbox,actuators
body material:ci,di,alu-bronze,cs and others
disc:di,alu-bronze,ss
seat:epdm,nbr
shaft:ss, inconel
about material, it can be customized, please contact us if any further requirementsstandards: en 593, api609, api6d
area of application
marine industry, water supply and drainage, fire fighting, shipbuilding, water treatment and other systems
standards
design and manufacture conform to en 593, api609, jis
flange dimensions conform to en 1092-2 pn10, pn16, jis5k, jis10k
face to face dimensions conform to en558 series
topwork’s dimensions conform to iso5211
testing conform to api598、en12266-1
actuation
hand lever
worm-gear/hand-wheel
electric-actuator
pneumatic-actuator
hydraulic-actuator
wafer type butterfly valve features
simple structure and easy operation
easy installation and good sealing
long service life and high reliability
good interchangeability of parts and cost saving
wafer type butterfly valve with concentric design
using backless structure, rubber fusion bonded on valve body
replaceable, resilient seat
streamlined disc, one-piece stem
approved and registered by vds, dvgw
related types of butterfly valves:
we have other types of butterfly valves: lug type butterfly valve, u flange butterfly valve, double flange butterfly valve, fluorine lined ptfe butterfly valve, double eccentric butterfly valve and triple eccentric butterfly valves used in marine industry, water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with nominal diameter of dn50 to dn1200, nbr/epdm/viton, certificates & approvals: dnv-gl, lloyds, dnv, bv, api, abs, ccsIndia
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at present, the ptfe butterfly valve, as a component used to realize the on-off and flow control of the pipeline system, has been widely used in petroleum, chemical industry, metallurgy, hydropower and many other fieldsptfe butterfly valve is to adapt to some corrosive environment with strong acid, strong alkali, petroleum, chemical, food and other special areas of need, the use of ptfe made of the valve body, has a strong anti-corrosion effectdue to the limitation of structural characteristics, it is not suitable for high temperature resistance, high pressure resistance, corrosion resistance, wear resistance and other industriesit can replace the stainless steel body under conventional conditions, with higher cost performance
below photos are ptfe lined butterfly valve of tianjin tanghai valve, more information please click here: ptfe butterfly valvethe butterfly plate of the butterfly valve is installed in the diameter direction of the pipestandards: en 593, api609, api6dwith strong function, small size, light and pleasant, reliable performance, simple supporting, large circulation capacity, especially suitable for the medium is sticky, containing particles, fiber properties of the occasion
th valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with api, jis, din standard, used in oil, gas, marine industry, water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with nominal diameter of dn50 to dn1200, nbr/epdm/viton, certificates & approvals: dnv-gl, lloyds, dnv, bv, api, abs, ccsin the known butterfly valve technology, its sealing form is mostly sealed structure, sealing materials for rubber, ptfe, etc
ptfe (teflon) butterfly valve can be equipped with akr electric, by pneumatic actuator, input control signal (4~20madc or 1~5vdc) and single-phase power supply can control the operation, can realize intelligent type (regulating type) and switching typein the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis, the rotation angle is 0°~90°, rotate to 90°, the valve brand is fully openIndia
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The dual plate check valve is used for pure pipeline and industrial, environmental protection, water treatment, high-rise building water supply and drainage pipeline, to prevent the reverse flow of the medium
check valve opening and closing parts by the medium flow and force to open or close, to prevent the medium backflow of the valve called check valvestandards: en 593, api609, api6d
if you need more information, please click here: dual plate swing check valve, you can get more information here
th valve is a professional manufacturer of butterfly valve, gate valve, check valve, globe valve, knife gate valve, ball valve with api, jis, din standard, used in oil, gas, marine industry, water supply and drainage, fire fighting, shipbuilding, water treatment and other systems, with nominal diameter of dn50 to dn1200, nbr/epdm/viton, certificates & approvals: dnv-gl, lloyds, dnv, bv, api, abs, ccsthe double-door check valve adopts clamping type, the butterfly plate is two semicircle, and the sealing surface can be body surfacing wear-resistant material or rubber lining, wide range of use, reliable sealingcheck valves belong to automatic valves, mainly used for medium one-way flow on the pipeline, only allow the medium to flow in one direction, in order to prevent accidentsIndia
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