• Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer
  • Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer
  • Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer
  • Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer
  • Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer
  • Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer

Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer

Driving Mode: Manual
Connection Form: Wafer
Structure: Centre Sealing
Seal Form: Force Sealed
Valve Stem: Normal
Work Pressure: Pn16
Customization:

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Miss Lillian Lee
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Basic Info.

Model NO.
D71F
Working Temperature
Normal Temperature (-40°C<T<120°C)
Material of Seal Surface
Soft Sealed
Valve Body
Casting
Application
Water,Oil,Air
Size Range
Dn50~Dn500
Body Material
Ggg40/Wcb/304/316
Test Standard
API 598
Place of Origin
Wenzhou
Transport Package
Carton Box+Plywood Case
Specification
CE
Trademark
WENBAO
Origin
China
HS Code
8481804090
Production Capacity
10000PCS/Month

Product Description

Lug Type Soft Seated Butterfly Valve with Gearbox

A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.
A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.
There are different kinds of butterfly valves, each adapted for different pressures and different usage. The zero offset butterfly valve, which uses the flexibility of rubber, has the lowest pressure rating. The high performance double offset butterfly valve, used in slightly higher-pressure systems, is offset from the centre line of the disc seat and body seal (offset one), and the centre line of the bore (offset two). This creates a cam action during operation to lift the seat out of the seal resulting in less friction than is created in the zero offset design and decreases its tendency to wear. The valve best suited for high-pressure systems is the triple offset butterfly valve. In this valve the disc seat contact axis is offset, which acts to virtually eliminate sliding contact between disc and seat. In the case of triple offset valves the seat is made of metal so that it can be machined such as to achieve a bubble tight shut-off when in contact with the disc.

Lug-style valves have threaded inserts at both sides of the valve body. This allows them to be installed into a system using two sets of bolts and no nuts. The valve is installed between two flanges using a separate set of bolts for each flange. This setup permits either side of the piping system to be disconnected without disturbing the other side.
A lug-style butterfly valve used in dead end service generally has a reduced pressure rating. For example a lug-style butterfly valve mounted between two flanges has a 150 psi pressure rating. The same valve mounted with one flange, in dead end service, has a 75 psi rating.

  Technical Specifications
Nomidal Diameter DN(mm) 50~2000
Nominal Pressure PN(Mpa) 0.6 1 1.6
Test Pressure Shell Test 0.9 1.5 2.4
Sealing Test 0.66 1.1 1.76
Air Test 0.6 0.6 1.76
Suitable Medium Air, water, sewage, steam, gas, oil, etc
Actuator Handle, gear, electric actuator, pneumatic actuator

Main Parts & Materials
Part Name Part Name
Body Cast iron, ductile iron, cast steel, stainless steel, rubber-lined, PTFE-lined, etc
Disc Cast iron, ductile iron, cast steel, stainless steel, special materials
Seat Ring Ductile iron, cast steel, stainless steel, alloy steel
Stem 45#, 2Gr13, stainless steel
Packing O-Ring, soft graphite

Company Overview
Zhejiang Wenbao Valve  Co.,Ltd was established in 1985. The main products range are as following: Fully Welded Ball Valve,1PC/2PC/3PC Flanged Ball Valve, Threaded Ball Valve, Mini Ball Valve, High Pressure Ball Valve, Pneumatic Ball Valve, Electric Ball Valve, Sanitary ball valve, Ball valve with mounting pad and other valves like gate, globe, check valves and Strainer, etc. Main material include: Stainless steel, Cast Steel, Forged Steel and Brass, etc. The products manufactured as per API, ANSI, JIS, ISO, BS, JB and GB, and have CAD valve design and quality testing center. The products are widely used in chemical industry, oil, metallurgy, light industry, electric power, food, pharmacy, civil industry, fiber industry, liquefied natural gas, liquefied petroleum gas, steel mills, heating pipes, etc. Our company passed the ISO 9001:2008, Standards Organization of Nigeria(SON), International Quality Award Certificate, Manufacture License of Special Equipment, KC of South Korea,CE of Europe, etc.
Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer Cast Iron Lug Type 1 Inch Butterfly Valve Manufacturer

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Contact Supplier

Miss Lillian Lee
General Manager

360° Virtual Tour

Diamond Member Since 2016

Suppliers with verified business licenses

Manufacturer/Factory
Registered Capital
10180000 RMB
Plant Area
>2000 square meters