End Closure For Plastic Pipes Designed With O Ring Seal And Clamp Mechanism For Sealing In Pressure Testing Applications
Working principle:
DN90mm 304 Stainless Steel Pipe Fitting End Closure
Factory-Direct DN90mm 304# Stainless Steel Pipe Fitting End Closures are specifically engineered for sealing test pipes made of PVC, PP and PE. High-temperature resistant silicone sealing rings are embedded in the seal grooves of the end caps, and the metal rings integrated with the end caps apply compression to the silicone sealing rings. The O-ring fulfills the sealing function through deformation induced by external pressure.
Construction:
Specifically, this end closure comprises a base, a sealing ring, a pressing ring, and a clamp, forming a integrated sealing structure for pipe testing.
Application:
The DN90mm 304# Stainless Steel Pipe Fitting End Closure is mainly intended for sealing PVC, PE, PP-R, ABS and composite pipe specimens, catering to hydrostatic test, bursting test, negative pressure test and other relevant pipe testing scenarios.
Fixture structure:
Adopting a semicircular pot structure, this end closure features easy installation, leak-proof performance and user-friendly operation. A variety of diameter specifications are available on demand to meet customers’ specific testing requirements, with the main body crafted from 304# stainless steel or carbon steel.
Meet standard:
Executive standard:ISO1167, ASTM D 1598/1599
Other models:
Available diameter specifications cover metric sizes: φ10, 16, 25, 32, 40, 50, 63, 75, 90, 110, 125, 140, 160, 180, 200, 225, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710, 800, 900, 1000, 1100, 1200, 1400, 1600, 1800 and 2000mm. It also supports ASTM standard sizes, including 1/2"(21.34mm), 3/4"(26.067mm), 1"(33.4mm), 1 1/4"(42.16mm), 1 1/2"(48.26mm), 2"(60.032mm), 2 1/2"(73.02mm), 3"(88.9mm), 4"(114.30mm), 5"(141.30mm), 6"(168.028mm), 8"(219.008mm), 10"(273.50mm), 12"(323.085mm), 14"(355.60mm), 16"(406.4mm), 18"(457.2mm), 20"(508.00mm), 24"(609.60mm) and other matching specifications.
Technical parameter:
|
Product name
|
End closures
|
|
Color
|
Silvery white
|
| Outline dimension |
φ150*110mm |
| Applicable pipe's diameter |
φ90~φ90+0.9mm |
| Max. Pressure |
10MPA |
| The size of seal ring |
φ85*5mm |
| End cap connector |
M2*1.25, 1/4'', 3/8"(customizable) |
| Type |
Type A |
|
Packing
|
Standard export wooden
|
|
Certificate
|
ISO
|
|
Delivery time
|
3~5 days
|
Q1: What is the temperature adaptability range of the fixture’s sealing component?
A1: The built-in silicone sealing ring features high-temperature resistance, adapting to a working temperature range of -20℃ to 120℃, which meets most pipe hydrostatic test conditions.
Q2: How does the fixture ensure long-term leak-proof performance?
A2: The metal pressing ring exerts uniform pressure on the silicone ring, and the integrated clamp structure maintains stable compression, avoiding seal failure caused by pressure fluctuation.
Q3: Is the fixture compatible with both metric and ASTM standard pipes?
A3: Yes, it supports full-range metric diameters from φ10mm to φ2000mm and all listed ASTM standard sizes, realizing universal application for different specification pipes.
Q4: What is the service life of the fixture’s main structural parts?
A4: Made of 304# stainless steel or carbon steel, the base and metal rings have strong corrosion resistance, with a service life of over 5 years under regular test frequency.
Q5: Can the fixture be quickly switched for pipes of different diameters?
A5: It adopts a modular design, allowing fast replacement of matching sealing rings and pressing rings, reducing diameter switching time to within 5 minutes.
Q6: Does the fixture require regular maintenance for sealing performance?
A6: Routine maintenance only involves checking the silicone ring for wear every 300 test cycles; replacement is simple and quick, without affecting overall test efficiency.





