End closures – Air-frame for large diameters. Model 1525

Model 1525, Air-frame.

For internal hydrostatic pressure testing of larger pipe diameters from 315 to 2000mm – and larger at request. The end closures seal off the sample in order to generate internal pressure in the sample. Max. pressure depends on standard, specifications and pipe sample diameter.

  • easy handling – can be handled by one person
  • low weight
  • unique design
  • perfect sealing
  • ideal for up to Ø2000mm
  • AISI 304 certified stainless steel
  • Acid resistant AISI 316 (optional)


The SCITEQ end-closures for large diameters model 1525 are produced purely in stainless steel. The material has been selected for corrosion resistance, durability and weight.

Patented light weight design

The Air frame design and low weight eases the handling of large pipe samples. The weight is considerably lower for large diameter pipes compared to traditional large diameter end closures, yet a robust construction has been maintained. The lower weight and design features ensures easy handling when mounting. Further, grips for cranes have been

100% tight

End closures without a tie-bar are produced for pipes in PE, PVC and PP. End closures are produced with a specific depth from O-ring to the internal bottom which ensures that even on chamfered and oval PE-pipes, the end-closure for large diameters is tight while pressurizing. The SCITEQ Air Frame end closures are used for relatively low pressures up to max. 60 bar in combination with temperatures between 20 to 95 degrees. The SCITEQ end closures model 1525 complies with the standards ASTM D 1598, ASTM D 1599 and ISO 1167.

For more information and technical specifications please see the brochure.

Associated equipment end-closures for large diameters

Associated equipment to the end closures – air frame for large diameters. Model 1525




Stainless steel

Diameter range:

Ø315mm up to Ø2000mm


1/8" male connection and supplied with screw operated bleed valve.

Max. test pressure:

up to 60 bar for up to DN 710 mm
up to 30 bar for DN 710 - 1200 mm
up to 13 bar for DN 1400
up to 10 bar for DN 1600
up to 8 bar for DN 1800
up to 6 bar for DN 2000

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Associated products

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There are numerous international standards referring to testing. We supply testing equipment to fulfill any national and international testing standard within our field of business. In case you do not find the standard you are looking for in the below list, please contact us for further information


A story from the real world

Laboratory manager, WL Plastic

‘The SCITEQ lab saw is running great. It has cut our sample prep time in half’.

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Your personal contact with us does not end with the commissioning of your test equipment. We also care about the operation of your solution.
We want to ensure optimal up-time based on preventive maintenance and efficient problem solving. You will achieve higher efficiency, high test reliability and a long life-time on your equipment.

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The wide range of SCITEQ standard products is available for very short delivery. We will ship directly to your site to help you meet your deadlines. Need a special version? Not a problem, we love the challange.

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