Product

Lined Butterfly Valve

Lined butterfly valves provide compact quarter-turn control and dependable corrosion resistance in process service.

Tight shut-off Low maintenance Corrosion resistant

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Product Overview

Application and service highlights

Introduction

Lined butterfly valves provide compact shut-off and basic throttling capability for corrosive media in medium and large diameter lines. They are frequently selected where installation space is limited and low weight is an advantage for piping support and maintenance.

Key Features

Compact body design suits larger diameter process lines.
Offers simple quarter-turn operation for shut-off duty.
Useful where reduced face-to-face length is preferred.

Specifications

Material, dimensions and testing standards

Material

Valve Body: Robust metallic construction with corrosion resistant lining.
Seats & Seals: PTFE-based soft sealing elements for dependable shut-off.
Trim: Configured to suit process pressure and media compatibility.

Dimensions

Offered in standard line sizes for process and utility services.
Flanged drilling available to match common plant standards.
Compact face-to-face dimensions support retrofit installations.

Testing

Seat leak and shell testing before dispatch.
Lining continuity inspected with spark testing.
Operational cycling checked for smooth performance.

Technical Drawing

Cross-sectional reference

Dimensional Specifications

Dimensional table

Size		Diameter (D)	Raised Face (R/F)	P.C.D (K)	Flange Thick. (T)	No. of Holes (N)	Hole Dia (B)	Lining Thickness (±0.5mm)	Length ± 5mm (Max L)
NB	Inch
25	1"	33.7	50	79	15	4	15	3	600
40	1.5"	48.3	65	95	17	4	18	3	600
50	2"	60.3	80	127	19	4	19	3	500
80	3"	88.9	100	152	22	4	22	3	400
100	4"	114.3	125	178	24	8	22	3	300