Double Offset Resilient Seated Butterfly Valve

Product Introduction

LYV®️ adopt double offset design in the resilient seated butterfly valve. The double offset design can reduce the compression between seal ring and seats during valve operating. Improve the service life of the valve. LYV®️ double offset resilient seated butterfly valve has a nickel alloy welded overlaid on body seat. This design makes the valve have low friction coefficient when valve open and close. And protect seat will not be damaged by particle in medium. LYV®️ also considering the requirements of the most of our customers, designed the feet and lifting lugs to be convenient for stock. LYV®️double offset resilient seated butterfly valve widely used in the applications of water supply, municipal project and wastewater treatment in all over the world. For more information, please contact to our sales.

Specifications

Size Range:

NPS 2” – 56”; DN150-DN1400

Nominal Pressure:

150LB; PN6-PN40

Temperature Range:

-40℃~125℃（depends on design and material）

End Connections:

Flange

Body Materials:

GGG40/GGG45; ASTM A536 Gr.60-40-18/Gr.65-45-12; ASTM A216 WCB;

Disc Materials:

GG40/GGG45; ASTM A536 Gr.60-40-18/Gr.65-45-12; ASTM A216 WCB; ASTM A351 CF8/CF8M

Sealing Material:

EPDM; VITON

Seat Materials:

Integral; 13Cr/304/316 overlayweld.

Stem Materials:

ASTM A182 F6A; ASTM A182 F304/F316/F304L/F316L; 17-4PH;

Design & Manufacture Standard:

API 609

Face-to-face Standard:

EN558-1

End Connection Standard:

ASME B16.4

Test & Inspection Standard:

API 598

Features

■ Zero leakage in bi-directional

■ EPDM or VITON seat

■ Double offset design

■ Bi-directional

■ Long-term service life.

■ Manual, electric or pneumatic actuation.

■ Foot stand and lifting lug for stocking goods.

What is double offset resilient seated butterfly valve:

Double offset resilient seated butterfly valve designed with a double offset whereby the disc is asymmetrical, and the valve shaft is attached at the back of the disc and a few degrees from the centerline. This design allows valve could be used for long-term serviced water supply pipeline. Sealing parts would not be damaged in a short period of time.

What’s difference between high performance and resilient seated butterfly valve:

The high-performance butterfly valve and resilient seated butterfly valve both designed by double offset. The difference between them is high performance butterfly valves are common in chemical or petrochemical industries due to its polymer or metal seat. The mediums usually are gas or some corrosive. The resilient seated butterfly valve whereby its rubber sealing, usually use for neutral medium likes clean water, wastewater. If you need valve for high temperature or corrosive medium. We would not suggest you choose resilient seat butterfly valve but high-performance butterfly valve.

Why choose LYV®️ valves:

We produce double offset resilient seat butterfly valve for over 30 years. The workshop covers 13000 square meters and own more than 50 advanced CNC machines. Our engineers & production team will make sure your order delivers with high-quality and fastest time. We also care about valve shipping. The valves will wrap by bubble pouches or paper to ensure the paint will not be damaged. We also fixed valve by plywood stick after we put valve into the box. The plywood case will be painted with necessary marking to make sure the valve will not be damaged during shipping.