DN200 8 Inch Non-Rising Stem Resilient Seated Ductile Iron Handwheel Flanged Gate Valve
Gate valve controls the media's flow by lifting the gate (open) and lowering the gate (closed). A gate valve's distinct feature is the straight-through unobstructed passageway, which induces minimal pressure loss over the valve. The unobstructed bore of a gate valve also allows for a pig's passage in cleaning pipe procedures, unlike butterfly valves. Gate valves are available in many options, including various sizes, materials, temperature and pressure ratings, and gate and bonnet designs.
Advantages of concealed stem gate valve:
1. Triple "O" seal: The valve stem adopts triple O-shaped ring seal, which is easy to open and close without water leakage.
2. Flat bottom valve seat: The bottom of the valve body is designed to be flat, which avoids debris and sludge at the bottom of the valve, and the fluid channel is unobstructed.
3. Overall rubber coating: The valve body adopts overall rubber coating to improve sealing and service life.
4. Light weight: Made of ductile iron, it is lighter than traditional gate valves.
5. Corrosion resistance: The inner wall is coated with non-toxic epoxy resin, which is suitable for raw drinking or sewage systems
Precautions for installation of Gate valves
1. The installation position, height and inlet and outlet direction must meet the design requirements, and the connection should be firm and tight.
2. Handle of all kinds of manual valves installed on the insulation pipeline shall not be downward.
3. The valve must be inspected before installation, and the nameplate of the valve should comply with the current national standard GB 12220.
4. Handwheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.
5. Gate valves with driving mechanism should be installed according to the instructions of the product.
Non-rising stem gate valve drawing structure
| DN | NPS(INCH) | L | D | D1 | Z-φD |
| 50 | 2'' | 250 | 160 | 125 | 4-18 |
| 65 | 2 1/2' | 265 | 180 | 145 | 4-18 |
| 80 | 3'' | 280 | 195 | 160 | 8-18 |
| 100 | 4'' | 300 | 215 | 180 | 8-18 |
| 125 | 5'' | 325 | 245 | 210 | 8-18 |
| 150 | 6'' | 350 | 280 | 240 | 8-22 |
| 200 | 8'' | 400 | 335 | 295 | 12-22 |
| 250 | 10'' | 450 | 405 | 355 | 12-26 |
| 300 | 12'' | 500 | 460 | 410 | 12-26 |
| 350 | 14'' | 550 | 520 | 470 | 16-26 |
| 400 | 16'' | 600 | 580 | 525 | 16-30 |
FAQ
Q: Can you make the product as per client's requirement?
A: Yes, we can make it with your exact requirement.
Q: What are your payment terms?
A: T/T (30% as desposit, the rest 70% will be paid before delivery), L/C at sight.
Q: Where is your nearest loading port?
A: Shanghai, Qingdao or Tianjin, China.
Q: How can you guarantee the quality or any warranty?
A: If any quality problems during use, all the products can be returned or according to consumer's requests
Q: Do you accept small quantity order?
A: Of course we do.
Q: And what is your shipment and delivery time?
A: By sea or air. Normally 7 to 14 Days for delivery, according to your order quantity.
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DN200 8 Inch Non Rising Stem Resilient Seated Ductile Iron Handwheel Flanged Gate Valve Images
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