ELAFLEX rubber expansion joint SERV-GS HNBR

ELAFLEX rubber expansion joint SERV-GS HNBR

‌1、 Product Overview‌

• ‌product nameRV-GS HNBR rubber expansion joint.

• ‌main materialsThe liner is made of highly wear-resistant and seamless hydrogenated nitrile rubber (HNBR); The reinforcement layer is made of galvanized steel cord; The outer cover is made of chloroprene rubber (CR).

• ‌Application mediumSuitable for mineral oil products, DIN standard fuels with up to 50% aromatic hydrocarbon content, cooling water containing anti-corrosion additives, lubricating/hydraulic oils, and seawater.

• ‌performance characteristicsHas excellent aging resistance, weather resistance, and ozone resistance; Compliant with ISO 15540 standard, it has a fire resistance of up to 30 minutes at 800 ° C; Has conductivity.

‌2、 Technical parameters‌

1. ‌temperature rangeThe medium dependent temperature range is -35 ° C to+100 ° C, and can reach+120 ° C in a short period of time.

2. ‌pressure ratingThe nominal pressure is PN 16 (some dimensions are PN 10).

3. ‌DimensionsA detailed specification table is provided for 15 standard sizes ranging from DN 25 (1 inch) to DN 600 (24 inches), including:

• Flange dimensions (D, k, n x ф)

• Bellows size (BL)

• Approximate weight (kg)

• Effective area (Q)

• Part Number

‌3、 Allowable range of motion‌
The document defines the allowable static motion range (non combination motion) of the SERV-GS HNBR model under the condition of installing the support ring flange and temperature not exceeding+60 ° C, with parameters including:

• ‌Installation length (EL)Minimum and maximum installation lengths.

• ‌Axial motion (L)Range of compression (L min.) and stretching (L max.).

• ‌Lateral motion (Ł)Allowable offset (± mm).

• ‌Angular motion (†)Allowable deflection angle (± °).
  Note: The table data is not applicable to combination sports. For combination sports, please refer to the calculation instructions or consult the sales team.

‌4、 Allowable vacuum degree (negative pressure)‌
The maximum allowable vacuum degree (in mbar) for different diameters (DN) under four configurations is listed in table form:

1. No vacuum support device (without VSD/VSR)

2. Equipped with vacuum supported spiral (with VSD/TAS)

3. Equipped with vacuum support ring (with VSR)

4. Equipped with vacuum support ring (with VSRV)
   Note: The data is measured based on standard installation length, room temperature, and non swelling medium of the new expansion joint. For swelling media, a safety factor should be considered. Compression installation can improve vacuum tolerance, while maximum tension installation can reduce vacuum tolerance by up to 50%.

ELAFLEX rubber expansion joint SERV-GS HNBR