Description

Design: DIN3354
Face to face: EN 558-1
Butt welding ends: EN 12627
Inspection and test: EN 12266-1

Specification:
Pressure Rating:: PN10,16,25,40
Temperature Range: -50°C~650°C
Size Range:   DN50~DN1400
Disc Sealing:    PTFE, Graphite Laminated
Operator: Lever, Gear, Electric, Pneumatic, Hydraulic
Materials:    Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel
Standard: C22.8 (1.0460) / GP240GH (1.0619/GS-C25),
Low temperature: TSTE355 (1.0566)
High temperature: 16Mo3 (1.5415) / GS-22Mo4 (1.5419),13CrMo4-5 (1.7335) / GS-17CrMo55 (1.7357)
Stainless steel1: .4401 / 1.4404 / G-X6CrNi18.9(1.4308),G-X6CrNiMo18.10 (1.4408)

Seal Structure,Soft Sealing,
Stopper Driver
ISO 5211 Mounting PAD
Connection,Flange,Wafer Lug-wafer,Weld
Operation,Type,Manual,Worm Gear,Electric,
Pneumatic,Hydraulic
Eccentric Structure,Centered

Welded End Butterfly Valve,DN600,PN25,A105,Worm Gear
[1] Structure Introduction
Lug type butterfly valve, also known as branch type butterfly valve, adopts a triple eccentric structure in the American standard lug type butterfly valve. The valve seat is sealed with a metal multi-level hard sealing structure, usually a interlayer of metal and graphite, such as 304+graphite and 316+graphite. This hard seal can also be made into a single layer soft seal PTFE, RPTFE, PPL, EPDM, NBR and other triple eccentric butterfly valves. Features:
1. Short structural size, small volume, light weight, and operational aspects
Adopting a full axis mechanism, the butterfly plate has high strength and a large flow area
3. Unique triple eccentric design reduces seal friction loss and greatly extends service life
4. Metal hard sealing is resistant to high temperature, low temperature, high pressure, and has a wide range of applications
(II) Relevant standards for American standard butterfly valves
Design and Manufacturing: API 609
Structure length: API 609
Connecting flange: ASME B16.5
Inspection and pressure test: API 598