Для каких сред подходит компенсатор ERV-R?

ERV-R предназначен для воды и водных сред: питьевой и технической воды, сточных и оборотных вод, морской и охлаждающей воды (в т.ч. с химдобавками), слабых кислот и щёлочей, солевых растворов. Имеет допуск для питьевой воды (DVGW W270, ACS, FDA). Не применяется для нефтепродуктов и масел.

Какие диаметры и давление доступны у ERV-R?

Условный проход Ду 25–1000 мм, рабочее давление Ру 10 и 16 бар (зависит от диаметра и температуры), температура среды −40…+100 °C, кратковременно до +120 °C. Фланцы поворотные DIN PN 10/16.

Как подобрать и заказать ERV-R?

Пришлите параметры объекта (Ду, Ру, среда, температура, перемещения) или заполните опросный лист — подберём типоразмер, рассчитаем распорные усилия и подготовим коммерческое предложение. Поставка across Russia and the CIS.

ERV-R — rubber expansion joint Elaflex for water

Name: Резиновый компенсатор Elaflex ERV-R
Brand: Elaflex
Availability: InStock

ERV-R

Expansion joint for drinking and industrial water

The basic rubber expansion joint (vibration insert) of the ROTRING series for water and aquatic environments. Dampens vibration and noise from pumps, compensates for axial, shear and angular movements, and reduces the load during water hammer. Inner layer of butyl rubber/EPDM, potable water tolerance.

Diameter, DN

25-1000 mm

Pressure, PN

10 / 16 bar

Temperature

−40…+100 °C

Technical specifications

Type	Rubber (elastic) expansion joint, flanged, single sphere
Nominal bore, DN	25-1000 mm
Working pressure, PN	10/16 bar (depends on diameter and temperature)
Medium temperature	-40 ... +100 °C, briefly up to +120 °C
Working medium	drinking and industrial water, waste and recycled water, seawater and cooling water (including with chemical additives), weak acids and alkalis, saline solutions, industrial alcohols, esters, ketones
Not to be used for	petroleum products and oils, cooling water with oil inhibitors, compressor oil air
Inner layer (camera)	butyl rubber (IIR) / EPDM, seamless, with low gas permeability
Reinforcement	polyamide textile cord, rubberized with butyl
Outer layer	EPDM, ozone and heat resistant
Flanges	swivel type, DIN PN 10/16, galvanised steel (optionally stainless steel, bronze or aluminium)
Marking	Red BAND: ERV, DU, RU, date of manufacture
Version	electrically conductive (discharge of static charge)
Approvals and certificates	DVGW W 270, ACS, FDA compliance

Type

Rubber (elastic) expansion joint, flanged, single sphere

Nominal bore, DN

25-1000 mm

Working pressure, PN

10/16 bar (depends on diameter and temperature)

Medium temperature

-40 ... +100 °C, briefly up to +120 °C

Working medium

drinking and industrial water, waste and recycled water, seawater and cooling water (including with chemical additives), weak acids and alkalis, saline solutions, industrial alcohols, esters, ketones

Not to be used for

petroleum products and oils, cooling water with oil inhibitors, compressor oil air

Inner layer (camera)

butyl rubber (IIR) / EPDM, seamless, with low gas permeability

Reinforcement

polyamide textile cord, rubberized with butyl

Outer layer

EPDM, ozone and heat resistant

Flanges

swivel type, DIN PN 10/16, galvanised steel (optionally stainless steel, bronze or aluminium)

Marking

Red BAND: ERV, DU, RU, date of manufacture

Version

electrically conductive (discharge of static charge)

Approvals and certificates

DVGW W 270, ACS, FDA compliance

The exact values of displacements (axial, shear, angular) and permissible vacuum depend on the standard size and construction length and are determined during selection. The full data is in the technical data sheet (PDF).

Connection dimensions and articles

DN	PN, bar	D, mm	k, mm	Holes n×d	L, mm	S, cm2	Weight, kg	Part number
25	16	115	85	4×14	130	15	1,9	ERV-R 25.16
32	16	140	100	4×18	130	15	3,4	ERV-R 32.16
40	16	150	110	4×18	130	20	4,0	ERV-R 40.16
50	16	165	125	4×18	130	30	4,6	ERV-R 50.16
65	16	185	145	4×18	130	50	5,3	ERV-R 65.16
80	16	200	160	8×18	130	85	6,9	ERV-R 80.16
100	16	220	180	8×18	130	125	8,0	ERV-R 100.16
125	16	250	210	8×18	130	185	9,9	ERV-R 125.16
150	16	285	240	8×22	130	250	12,3	ERV-R 150.16
200	10	340	295	8×22	130	400	16,5	ERV-R 200.10
250	10	395	350	12×22	130	600	21,6	ERV-R 250.10
300	10	445	400	12×22	130	800	29,3	ERV-R 300.10
350	16	505	460	16×22	200	1000	43,0	ERV-R 350.10
400	16	565	515	16×26	200	1375	46,0	ERV-R 400.10
450	10	615	565	20×26	200	1780	50,0	ERV-R 450.10
500	10	670	620	20×26	200	2185	57,0	ERV-R 500.10
600	10	780	725	20×30	200	3080	70,0	ERV-R 600.10
700	10	895	840	24×30	260	4800	117,0	ERV-R 700.10
800	10	1015	950	24×33	250	5440	129,5	ERV-R 800.10
900	10	1115	1050	28×33	300	7100	184,0	ERV-R 900.10
1000	10	1230	1160	28×36	300	8700	245,0	ERV-R 1000.10

D is the outer diameter of the flange, k is the diameter of the circumference of the holes, n×d is the number and diameter of the holes, L is the face length, S is the effective area (for calculating the spacer forces from pressure). Flange sizes according to DIN PN 10/16. Other flange standards and custom materials are available.

About the ERV-R expansion joint

ERV-R is a flanged rubber expansion joint (vibration insert) of the ROTRING series manufactured by Elaflex. Its main task is to dampen vibration and noise that are transmitted to the pipeline from pumps and other equipment, as well as compensate for axial, shear and angular movements and reduce the load during a hydraulic shock.

The inner layer is made of butyl rubber and is seamless, with low gas permeability; the power frame is made of polyamide cord; the outer layer is made of ozone and heat resistant. This design ensures potable water tolerance (DVGW, ACS, FDA compliance) and suitability for a wide range of aquatic environments, including seawater and recycled water with chemical additives. The design is electrically conductive.

The expansion joint is supplied with DIN PN 10/16 galvanized steel swivel flanges; stainless steel, bronze, aluminum and other flange standards are available on request. OnePROM selects the standard size for the parameters of the object, calculates the spacer forces and compensating capacity, and supplies it with accompanying documentation. For the selection, send the parameters or fill out the questionnaire.

From enquiry to delivery

Selection

We accept the parameters or a questionnaire, select the standard size and material.

Calculation and quotation

We calculate movements and thrust forces and prepare a quotation.

Supply

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

Installation

Installation, installation supervision and commissioning on site where required.

Frequently asked questions

For which environments is ERV-R suitable?

For water and aquatic environments: drinking and industrial water, waste and recycled water, seawater and cooling water (including those with chemical additives), weak acids and alkalis, salt solutions. It is approved for drinking water (DVGW W270, ACS, FDA). It is not used for petroleum products and oils — group NBR expansion joints are used for them (for example, ERV-G).

What diameters and pressures are available?

Nominal passage DN 25-1000 mm, operating pressure Pn 10 and 16 bar (depends on diameter and temperature), ambient temperature -40...+100 °C, short-term up to +120 °C. Swivel flanges DIN PN 10/16, other standards and materials are available on request.

How to choose and order an ERV-R?

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.