Product

Lined Manhole Cover Assembly

Lined manhole cover assemblies provide secure access points for reactors and vessels used in corrosive service applications.

Reactor service Custom built High purity flow path

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Product Overview

Application and service highlights

Introduction

Lined manhole cover assemblies provide protected access openings on vessels and process equipment where internal exposure to corrosive chemicals must be controlled. They are manufactured to support sealing reliability, maintenance access and service compatibility in plant operations.

Key Features

Combines vessel access with corrosion resistant internal contact surfaces.
Suitable for inspection and maintenance openings on lined equipment.
Designed to support dependable sealing under plant service conditions.

Specifications

Material, dimensions and testing standards

Material

Construction: Built for reactor and vessel accessory duty.
Lining: PTFE contact surfaces for aggressive chemical resistance.
Mounting: Connection details tailored to GLR nozzle arrangements.

Dimensions

Custom insertion lengths and nozzle sizes can be supplied.
Suitable for reactor, vessel and tank top entry arrangements.
Geometry optimized for dosing, sparging and transfer functions.

Testing

Dimensional verification before final assembly.
Spark testing on lined surfaces where applicable.
Fit-up reviewed for reactor accessory compatibility.

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	2000
40	1.5"	48.3	65	95	17	4	18	3	2000
50	2"	60.3	80	127	19	4	19	3	1800
80	3"	88.9	100	152	22	4	22	3	1500
100	4"	114.3	125	178	24	8	22	3	1200