Rubber expansion joint Elaflex · chemistry

ERV-GR

For acids and alkalis

ERV-GR is a rubber expansion joint for acids, alkalis, chemicals and chemically aggressive wastewater. The composition of the rubber is selected for resistance to aggressive environments.

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Diameter, DN
25-700 mm
Pressure, PN
10 / 16 bar
Purpose
Acids/alkalis
Request a quote Download data sheet (PDF)
ERV-GR Rubber expansion joint Elaflex ERV-GR — For acids and alkalis Elaflex · Germany
Applications

Where it is used

Chemical production
Aggressive effluents and neutralization
Chemical transfer
Water treatment and chemicals
Specifications

Technical specifications

TypeRubber (flexible) expansion joint, flanged
Nominal bore, DN25-700 mm
Working pressure, PN10 / 16 bar
Medium temperaturedepends on the environment (to be specified)
Working mediumacids, alkalis, chemicals, chemically aggressive wastewater
Not to be used forconcentrated acids (see VITEX)
Inner layer (lining)special chemical resistant rubber compound
Outer layerchemical resistant, ozone resistant
Flangesswivel type, DIN PN 10/16, galvanised steel (optionally stainless steel, bronze or aluminium)
MarkingERV / type, DN, PN, date of manufacture

Exact movements and permissible vacuum depend on the size and face-to-face length and are determined during selection. Full data is given in the technical data sheet (PDF).

Size range

Connection dimensions (DIN PN 10/16)

DNPN, barD, mmk, mmHoles n×dL, mm
2516115854×14130
32161401004×18130
40161501104×18130
50161651254×18130
65161851454×18130
80162001608×18130
100162201808×18130
125162502108×18130
150162852408×22130
200103402958×22130
2501039535012×22130
3001044540012×22130
3501650546016×22200
4001656551516×26200
4501061556520×26200
5001067062020×26200
6001078072520×30200
7001089584024×30260

D is the flange outside diameter, k the bolt circle diameter, n×d the holes, L the standard face-to-face length. Flange dimensions to DIN PN 10/16. Weight and effective area depend on the size and are given in the data sheet or on request. Other flange standards and materials are available to order.

Description

About the ERV-GR expansion joint

ERV-GR is a rubber expansion joint for acids, alkalis, chemicals and chemically aggressive wastewater. The composition of the rubber is selected for resistance to aggressive environments.

Diameters DN 25-700 mm, flanges DIN PN 10/16. Compatibility with a specific medium and concentration is checked according to the chemical table during selection.

How we work

From enquiry to delivery

01

Selection

We receive the parameters or questionnaire and select the series and size.

02

Calculation and quotation

We calculate movements and thrust forces and prepare an offer.

03

Supply

Shipped from stock or made to order with the required flange configuration.

04

Installation

Installation, installation supervision and commissioning on site where required.

Questions

Frequently asked questions

For which environments is ERV-GR suitable?
Suitable for the following media: acids, alkalis, chemicals, chemically aggressive wastewater. Not applicable for: concentrated acids (see VITEX).
What diameters and pressures are available?
Nominal passage DN 25-700 mm, operating pressure PN 10/16 bar, temperature depends on the medium (to be specified). Swivel flanges DIN PN 10/16, other standards and materials are available on request.
How to choose and order an ERV-GR?
Send the project parameters (DN, PN, medium, temperature, movements) or complete the questionnaire — we will select the size, calculate thrust forces and prepare a quotation. Delivery across Russia and the CIS.

Let's select the ERV-GR for your facility

Send the parameters or a questionnaire — we will prepare a calculation and a quotation.

Request a quote