Wras Ductile Iron Water Valve GG25 GGG40 GGG50 Wafer Butterfly Valves For Water

Series No. BFV-1005

A butterfly valve, also known as a flap valve, is a simple structure regulating valve that can be used for switch control of low-pressure pipeline media. The butterfly valve refers to a valve with a disc as the closing component (valve disc or butterfly plate) that rotates around the valve axis to achieve opening and closing.

Butterfly Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media. Mainly used for cutting and throttling on pipelines. The butterfly valve opening and closing part is a disc shaped butterfly plate that rotates around its own axis within the valve body to achieve the purpose of opening, closing or adjusting.

Quick Detail

Design standard: API 609.

Body material: DUCTILE IRON ASTM A536

Nominal diameter: DN40 to DN1200 (1-1/2”—48”.)

Pressure: CL150 (PN20) 150PSI 225PSI, 285PSI, PN6/PN10/PN16, JI5K/JIS10K

End connection: Wafer, LUG

Face to face:EN558 Series 20

Top flange ISO5211.

Bi-direction Seal, Renewable seat Design

Mode of operation: Lever

Test and inspection: API 598. EN1226

Epoxy Powder Coated inside and outside Min. 250 microns.

Product Range

Available Body Material: Ductile Iron , Carbon steel, Stainless steel, Alloy steel.

Available Disc Material: Ductile iron, SS304, SS316, Bronze, Duplex SS2205/2507, UNS31803/UNS32750

Optional Seat: EPDM, NBR, PTFE, Teflon. Neoprene

Optional End connection: Wafer, Lug, Flanged.

Optional Body Design: Eccentric or Concentric centerline

Face to face: EN558 Series 13/14, long type or short type

Normal diameter: 4"~96" (DN100~DN2400).

Pressure range: 150lbs (PN10~PN25).

Available Operation: Gearbox, Electric, pneumatic actuator

Working temperature: -46℃~+200℃.

Performance:

1. Ductile iron solid valve body, QT450-10 ductile iron valve body, tensile strength 450Mpa Min.
2. Highly elastic seat rubber

The rubber content of the valve seat rubber is 50%, and the simulation of opening and closing experiments is more than 10,000 times, without leakage

3. Aksu epoxy plastic powder

The valve body is sprayed with Akzo's epoxy resin powder Min. 250microns. with strong adhesion

4. Anti-blowing valve shaft design

The valve shaft of of the butterfly valve adopts the anti-blowing structure, which has excellent safety performance.

Install of the butterfly valve

Figure 1

Incorrect Disc opened beyond valve body face. Pipe flanges not spread sufficiently.	Disc positioned in the almost closed position. Pipe flange spread allows sufficient room for valve.

Figure 2 Centering and Flanging of Valve

Figure 3.Flange Bolt Tightening Sequence

Figure 4-Final Valve Alignment and Tightening of Flange Bolts

Incorrect Pipe Flanges mis-aligned uneven torque applied to bolting.	Correct Piping aligned. Thread engagement even on both sides of valve.

Application:

widely used in gas, oil, water, chemical engineering and other related industries, also in cooling water systems of thermal power stations