DN1200 PN10 Flanged Butterfly Valve, Nylon 11 Coated Disc, Worm Gearbox
Features
Double Flange Type |
Simple structure & Stable connection |
Seat Design |
Replaceable valve seat |
Operation Cycles |
Over 100,000 times |
Leakage Level |
Bubbles-tight sealing with no leakage |
Low Torque |
Operation easy and flexible |
Bidirectional Sealing |
Any installation position |
Low Flow Resistance |
Improve fluid efficiency and reduce energy consumption |
Rich Sealing Materials |
Rich variety over 5 types |
Coating Grade |
Conventional and special conditions of C1-C5 & CX |
Certificates |
ISO9001, CE, WRAS, ACS |
Specifications
Design Standard |
EN 593, API 609 |
Top Flange Standard |
ISO 5211 |
End Flange Standard |
EN 1092 PN6/10, ANSI 125LB |
Face to Face Dimension |
EN 558-1 Series 20 |
Testing Standard |
API 598, EN12266 |
Temperature |
-20℃~120℃(depends on the sealing material) |
Body Material |
Ductile Iron: GGG40, GGG50, ASME A536, ASME A395 |
Disc Material |
Ductile Iron + Ni / FBE / Nylon / Halar / Rubber |
Shaft Material |
Stainless Steel, Inconel |
Seat Material |
EPDM, NBR, WRAS EPDM, VITON, Silicone |
Operator |
Lever, Gearbox, Pneumatic, Electric Actuator |
Dimension
Choose the Right Butterfly Valve Seat Material
Butterfly valve seat materials directly affect sealing performance, chemical compatibility, pressure capability and service life. Selecting the correct seat material ensures reliable operation in water treatment, chemical processing, HVAC, marine and industrial applications.
| Material | Recommended Applications | Temperature |
|---|---|---|
| EPDM | Water, Sea Water, Alcohols, Organic Salt Solutions, Mineral Acid Solutions, Mineral Alkalines | -20°C to +110°C |
| WRAS / ACS EPDM | Drinking Water Systems | -20°C to +110°C |
| NBR (Buna-N) | Mineral & Vegetable Oils, Gas, Non-aromatic Hydrocarbons, Animal & Vegetable Fats, Air | -10°C to +80°C |
| Hypalon | Mineral Acid Solutions, Organic & Inorganic Acids, Oxidizing Solutions | -10°C to +80°C |
| Viton (FKM) | Acids, Hydrocarbons, Fuels, Vegetable Oils, Mineral Oils | -5°C to +150°C |
| HNBR | Mineral Oils, Vegetable Oils, Natural Gas, Air, Acid & Alkali Solutions | -55°C to +150°C |
| Silicone | Low & High Temperature Applications | -30°C to +150°C |
| High Temp Silicone | Superheated Water | -50°C to +160°C |
Frequently Asked Questions
Everything you need to know about wafer butterfly valves, including construction, materials, applications and performance.
What is a U Type flanged butterfly valve?
A U type flanged butterfly valve is a butterfly valve designed with a compact U-shaped flange connection. It combines the advantages of wafer butterfly valves and flanged butterfly valves, allowing direct installation between pipeline flanges while maintaining a short face-to-face dimension. FACE TO FACE STANDRAD: EN 558-1 SERIES 20
What is the difference between a U type flanged butterfly valve and a double flanged butterfly valve?
The main difference is the structural length and weight.
A U type flanged butterfly valve uses a compact semi-flanged design, and its face-to-face dimension is similar to wafer and lug butterfly valves. It is significantly shorter and lighter than a double flanged butterfly valve, making it easier to install in limited spaces.
A double flanged butterfly valve has integrated flanges on both sides and follows longer flange-to-flange dimensions, providing higher mechanical strength for some heavy-duty applications.
What are the advantages of a U type flanged butterfly valve?
The main advantages include: Compact face-to-face dimension Lightweight design compared with double flanged valves Easy installation between pipeline flanges Lower material and transportation costs Reliable bi-directional shut-off performance Suitable for retrofit projects where space is limited
What applications are U type flanged butterfly valves used for?
U type flanged butterfly valves are widely used in: Water treatment plants Drinking water systems Wastewater treatment HVAC cooling systems Desalination plants Industrial process piping Fire protection systems Marine and seawater applications
Are U type flanged butterfly valves suitable for pneumatic actuation?
Yes. U type flanged butterfly valves can be equipped with pneumatic actuators, electric actuators or gear operators. The ISO 5211 mounting pad allows easy installation of actuators and automation accessories such as solenoid valves, limit switches and positioners.
