Hand Manual Three Way Cast Iron Lug Type Manual Butterfly Valve
Three Way Butterfly Valve Features:
| Professional design | When initiating the rotary opening movement the disc is off-seated
after only a few degree of opening movement and there is very little wear and tear
between seat ring and disc. |
| Combine fastness | Stainless steel seat ring is rolled into the valve body by applying
special rolling technology when DN<1200. Ultrasonic spray applies seal of valve body when
DN>1400. |
| Adjust tightness | Rubber sealing ring and disc can adjust tightness or softness of
sealing with clamping ring, it insures best performance of adjusting the compression of sealing. |
| Sealing reliable | Body and disc made of ductile iron which promote the impact
resistance and pressure-bearing capacity, sealing ring made of rubber and valve seat’s sealing
surface is conical shaped, make the sealing capacity more reliable. |
| Excellent corrosion protection | Inside electrostatic epoxy resin power coating or vitreous
enamel(upon request), outside electrostatic epoxy resin power coating.
|
| Reliable health nature | Epoxy resin power is up to the health standard. |
| Mail part & material | Body, Disc: GGG50 with internal and external epoxy resin coating |
| Stems: 1Cr17Ni12Mo2Ti, Stainless steel min.13%Cr |
| Bushing :Bronze CuAI10Fe3 |
Seal ring, O-ring: NBR, EPDM or FPM
|
Three Way Butterfly Valve introduction:
1) Fast Material Supply. Have own copper bar Factory of Group.
2) Every valve put through a six-step QC process before delivery.
Material Control, Machining Quality Control, In-coming Material
Inspection, Assembly Line Quality Control, Leakage Testing, Final
Inspection Before Delivery.
3) 100% Leakage Test.
4) Strictly and perfect management in production.
5) Guaranteed Quality In Competitive Price.
6) On-time Delivery.
7) Complete R&D facilities and Excellent team.
8) Annual R&D projects reach the number of 100.
9) Have rich experience and strong ability to develop new product
(DN250 10inch butterfly valve)
face to face length: 10 inch valve length be 8inch(203mm).
Body Ductile Iron w/Fusion Bonded Epoxy ASTM A536 65-45-12
Disc Ductile Iron w/316SS Edge w/Fusion Bonded Epoxy ASTM A536
65-45-12
Seat NBR Vulcanized on Body (Buna-N)
Shaft Type 316 Stn. Stl ASTM A276 Ty316
Packing V-Ring NBR (Buna-N)
Flanges ANSI B 16.1 Class 125
Specifications:
Size: DN50 - 3000
Temperature: -15℃ - 150℃
Pressure: 1.0MPa/1.6MPa
Materials
Materials of Body : Ductile Iron (GGG40, GGG50). Cast Iron (GG25),
Stainless Steel
Materials of Disc : Stainless Steel. Nickel Plated, Ductile Iron,
Ductile Iron Coated Plastic,
Titanium Steel, Copper Alloy etc
Materials of Seat : Ethylene-Propylene-Diene Monomer (EPDM),
Polytetrafluoroethylene (PTFE),
Nitrile Rubber (NBR), Chloroprene, Chlorosulfonated Polyethylene
(Hypalon),
Silicon, Fluoroelastomer (VITON) , Caoutchouc etc.
Materials of Stem : Stainless Steel. Carbon Steel ,2Cr13
A butterfly valve is a type of flow control device, typically used
to regulate a fluid flowing through a section of pipe.
The valve is similar in operation to a ball valve. A flat circular
plate is positioned in the center of the pipe.
The plate has a rod through it connected to an actuator on the
outside of the valve. Rotating the actuator turns the
plate either parallel or perpendicular to the flow. Unlike a ball
valve, the plate is always present within the flow,
therefore a pressure drop is always induced in the flow regardless
of valve position.
1. BRIEF INTRODUCTION:
The butterfly valve is operated by the disc rotating form 0° to
90°, can be applied to cut off or regulate
the flow of medium.
The valve can be actuated by operating lever, handle wheel electric
actuator or pneumatic actuator.
Widely used for potable water supply, waste water treatment,
electric power plant, gas supply,
warm-air system, smelting plant, ship building, textile, petroleum,
chemistry, or other light industries.
2. Specification
name | Butterfly Valve |
Item No | D373H-10K |
DN(mm) | DN50~DN3000 |
pressure(Mpa) | 1.0 |
Test pressure (Mpa) | Seal test | 1.1 |
Body test | 1.5 |
temperature | ≤350℃ |
medium | Water, sewage, sea water, hot water etc., |
3. FEATURES
⊙ EPDM seated, good seal
⊙ Low weight
⊙ Low flow resistance
⊙ Small operation torque
⊙ Easy to install and maintain
⊙ Open-close 90° more smoothly
4. APPLICABLE STANDARDS
1. Design according : API 609
2. Test standard according: JIS B2003
3. Connect flange standard according: JIS B2212
4. Face to face standard according: JIS B2002
5. Item Name of part Material Spec
NO | Part name | Material |
1 | Body | SS304 |
2 | Gear box | Assembly |
3 | Disc | SS304 |
4 | Stem | SS416 |
5 | Seal ring | 316+Graphite |
6 | packing | Graphite |
6. Operation:
6.1. The two pipe flange should be smooth.
6.2. Put the butterfly valve in the pipe line, fixed the
orientation hole first.
7. Delivery:
When delivery or store the butterfly valve, should keep in dry and
cool environment.
8. Note:
8.1. Pipe flange should same as the butterfly valve flange.
8.2. Check the valve before installed, the environment should
correspond to the butterfly valve
specification.
8.3. Before open butterfly valve, checking the disc without dirt.
8.4. The disc must be shut off place when installed.
8.5. Adjusting the pipe connect before installed.
8.6. The connect flange should be parallel.
8.7. After installed, the pressure test disc should be open place.
8.8. If the butterfly can not natural open or close, please kindly
check it careful, can not strike, tamp or
use extension lever.
8.9. When maintenance or operation, must check the stem, lever,
gear box or actuator have correctly
connect. Otherwise the stem will be push by pipe pressure.
9. The malfunction and resolving:
malfunction | whys | solution |
Seal leak | 1, Some rubbish on the seal 2, Seal have been light damage | ① Clean the rubbish. ② Replacing the disc |
Stem Packing leak | 1, packing be damaged 2, packing lapse | ① Tighten the gland nut ② Change the packing |
flange leak | 1, the nut release 2, gasket lapse | 1 . Tighten the nut 2. Change the gasket |
10. Maintenance
Open the worm box cover and add some butter per two months.
Check the seal, packing and flange, if leak, please maintain ASAP.
Wafer Rubber Seated Butterfly Valves
DN
(mm) | PN
(MPa) | Connection dimensions(mm) |
L | D | D1 | Zφd |
|
40 | 1.0/1.6 | 43 | 145 | 110 | 4-18 |
50 | 43 | 165 | 125 | 4-18 |
65 | 46 | 185 | 145 | 4-18 |
80 | 46 | 200 | 160 | 4-18/8-18 |
100 | 52 | 220 | 180 | 8-18 |
125 | 56 | 250 | 210 | 8-18 |
150 | 56 | 285 | 240 | 8-22 |
200 | 60 | 340 | 295 | 8-22/12-22 |
250 | 68 | 395/405 | 350/355 | 12-22 |
300 | 78 | 445/460 | 400/410 | 12-22 |
350 | 1.0 | 78 | 505 | 460 | 16-22 |
400 | 102 | 565 | 515 | 16-26 |
450 | 114 | 615 | 565 | 20-26 |
500 | 127 | 670 | 620 | 20-26 |
600 | 154 | 780 | 725 | 20-30 |
700 | 165 | 895 | 840 | 24-30 |
800 | 190 | 1015 | 950 | 24-33 |
900 | 203 | 1115 | 1050 | 28-33 |
1000 | 216 | 1230 | 1160 | 28-39 |
1200 | 254 | 1455 | 1380 | 32-39 |
1200 | 0.6/0.25 | 254 | 1400/1375 | 1340/1320 | 32-34/32-30 |
1400 | 279 | 1620/1575 | 1560/1620 | 36-34/36-30 |
1600 | 318 | 1820/1785 | 1760/1730 | 40-34/40-30 |
1800 | 356 | 2045/1985 | 1970/1930 | 44-41/44-30 |
2000 | 406 | 2265/2185 | 2180/2130 | 48-48/48-30 |
Product Advantages:
1) Small in size and light in weight and maintaince.
It can be mounted whereever needed.
2) Simple, compact structure, quick 90 degree on-off operation.
3) Disc has two-way bearing, perfect seal, without leakage under
the pressure test.
4) Flow curve tending to straight-line. Excellent regulation
performance.
5) Various kinds of materials, applicable to different medium.
