Product

Lined Swing Check Valve

Lined swing check valves prevent reverse flow while protecting internals from aggressive media in process systems.

Tight shut-off Low maintenance Corrosion resistant

Inquire Now Download brochure

Product Overview

Application and service highlights

Introduction

Lined swing check valves are designed to prevent reverse flow in corrosive piping systems while offering low resistance during normal forward flow. They are commonly installed after pumps and on transfer headers where backflow protection is required.

Key Features

Prevents reverse flow and helps protect upstream equipment.
Swing type disc design supports low pressure drop in forward flow.
Suitable for lined chemical transfer lines and utility services.

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