Bayerteq End Closures for Pressure Testing – ECB, ECC, ECD & ECE Series
- Precision stainless steel end closures for hydrostatic pressure and burst testing of plastic pipes & fittings
- Full compliance with ISO 1167, ISO 908, ASTM D1598, ASTM D1599, EN 921, and DIN 8074/8075
- Extensive diameter coverage from Ø 6 mm to Ø 3,000 mm; pressure ratings up to 100 bar (and 800 bar for ultra-high pressure)
- Modular designs: Type A (without tie-rod for PE, PP, PPR, PEX, ABS) and Type B (with tie-rod for PVC, U-PVC, PVC-O)
- Patented split-clamp assembly allows quick tool-free mounting on large diameters without hydraulic mounting presses
- Manufactured from 100% AISI 304 stainless steel (optional AISI 316) with zero ghost leakage
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The end closures for pressure testing manufactured by Bayerteq provide heavy-duty sealing solutions for thermoplastic pipes and fittings during long-term hydrostatic durability and short-time burst evaluations. Engineered in strict compliance with international standards such as ISO 1167, ISO 908, ASTM D1598, and ASTM D1599, these premium stainless steel closures ensure absolute pressure containment and zero ghost leakage across prolonged conditioning cycles.
During hydrostatic pressure verification, pipe specimens are subjected to sustained internal fluid pressures at controlled ambient or elevated water bath temperatures. Bayerteq end closures for pressure testing reliably seal the specimen ends while accommodating thermal expansion and structural elongation, guaranteeing accurate time-to-failure data for quality assurance and official product certification.
End Closures for Pressure Testing Model Hierarchy & Engineering
Bayerteq provides specialized closure configurations tailored to pipe polymer chemistry, wall thickness, and outer diameter:
- Model ECB (Up to Ø 110 mm): Compact Type A end closures designed for small-diameter polyolefin pipes (PE, PP, PPR, PEX, PB). Features an ergonomic internal grip and rapid-tightening outer sleeve for effortless benchtop assembly.
- Model ECC (Up to Ø 3,000 mm): High-capacity Type A end closures for large-diameter municipal and industrial thermoplastic pipes. Incorporates patented split-type clamps that provide automatic centering and secure grip without requiring hydraulic mounting presses or heavy tooling.
- Model ECD (Up to Ø 1,000 mm): Specialized multi-station closures and specialized fittings tooling engineered for pressure testing molded components, tees, and elbows up to 100 bar.
- Model ECE (Type B with Tie-Bars for PVC, U-PVC & PVC-O): Heavy-duty reinforced closures equipped with high-tensile metal tie-rods that maintain exact free-length per ISO 1167. Includes extended gripping sectors and double O-ring sealing specifically engineered to eliminate the characteristic bulging phenomenon in PVC-O pipes.
- Ultra-High Pressure Series (Up to 800 bar): Extreme-pressure closures for multi-layer reinforced pipes and oil & gas conduits up to Ø 500 mm, interfacing seamlessly with Bayerteq HPM XP pressure cabinets.
Every closure is precision-machined from certified AISI 304 or AISI 316 stainless steel, equipped with quick couplings, integrated air bleed valves, and built-in water drain valves for maximum laboratory safety.
Bayerteq End Closures – Comprehensive Technical Specifications
| Parameter | Specification Details |
|---|---|
| Applicable Standards | ISO 1167-1/2, ISO 908, ASTM D1598, ASTM D1599, EN 921, DIN 8074, DIN 8075 |
| Standard Diameter Range | Ø 6 mm up to Ø 3,000 mm (Intermediate and custom metric/inch sizes available) |
| Maximum Operating Pressure | Standard Series: up to 100 bar (10 MPa) High-Pressure Series: up to 800 bar (80 MPa for Ø ≤ 500 mm) |
| Material Construction | 100% High-grade Stainless Steel AISI 304 (AISI 316 available upon request; material certificates included) |
| Closure Construction Type | Type A: End-load transmitted to pipe wall (without tie-rod, for PE, PP, PPR, PEX, ABS) Type B: End-load carried by external tie-bars (with tie-rod, for PVC, U-PVC, PVC-O) |
| Pipe Compatibility | PE 100-RC, PE 80, PP-R, PP-H, PP-RCT, PEX, PERT, PB, ABS, PVC-U, PVC-C, PVC-O, and multi-layer composite pipes |
| Sealing & Clamping Mechanism | Precision elastomeric O-ring seal with split-segment hardened gripping rings; seals non-chamfered and slightly oval pipes |
| Fluid Connection & Venting | Stainless steel quick couplings, integrated top air bleed valve, and bottom water drain valve |
| Installation Equipment Needed | Manual hand tools only (patented split-clamp assembly eliminates heavy hydraulic mounting presses) |
Model Hierarchy Comparison Matrix
| Model Code | Diameter Span | Design Type | Target Pipe Materials | Max Pressure |
|---|---|---|---|---|
| Model ECB | Ø 6 mm to Ø 110 mm | Type A (No tie-rod) | Small Polyolefins (PE, PP, PPR, PEX) | 100 bar |
| Model ECC | Ø 110 mm to Ø 3,000 mm | Type A (Patented split-clamp) | Medium to Ultra-Large Polyolefin pipes | 100 bar |
| Model ECD | Up to Ø 1,000 mm | Special Fitting Tooling | Molded fittings, T-pieces, and elbows | 100 bar |
| Model ECE | Ø 16 mm to Ø 1,200 mm | Type B (With Tie-Bars) | PVC, U-PVC, PVC-O (anti-bulging) | 100 bar |
| Model HPM-HP | Up to Ø 500 mm | Extreme Pressure Closure | Reinforced multi-layer oil & gas pipes | 800 bar |
Key Operational & Engineering Advantages
100% Stainless Steel AISI 304 / 316
Entirely forged and machined from certified stainless steel. Resists corrosion during years of immersion in high-temperature water baths without degradation or scaling.
Zero Ghost Leakage Performance
Specially contoured sealing profiles and high-grade elastomeric O-rings guarantee a 100% airtight and watertight seal even on non-chamfered, out-of-round, or ovalized pipes.
Patented Tool-Free Split Clamps
For large pipes up to Ø 3,000 mm, the segmented split clamps provide automatic concentric centering. Technicians can mount closures rapidly using standard hand tools without expensive hydraulic presses.
Anti-Bulging Solution for PVC-O
Model ECE incorporates an extended gripping footprint and double O-ring design that counteracts material expansion and prevents the characteristic bulging failure of oriented PVC pipes.
Integrated Air Bleed & Water Drain
Fitted directly with top air release valves to purge trapped bubbles before pressurization and bottom drain valves for fast, clean drainage after burst testing.
Full-Range Fitting Adaptability
Dedicated Model ECD end closures seal tees, elbows, and irregular injection-molded components, providing seamless pressure testing for complete pipe networks.
Ordering Information & Optional Accessories
1. Quick-Coupling Hose Assemblies
High-pressure flexible hoses rated up to 100 bar or 800 bar equipped with self-sealing stainless steel quick disconnects.
2. Suspension & Hoisting Eyes
Integrated lifting lugs and balancing counterweights for crane-assisted loading of heavy large-diameter closures (Ø 400 mm to Ø 3,000 mm).
3. High-Temperature Viton O-Rings
Optional FKM / Viton elastomeric seals for specialized chemical testing and continuous water bath exposure up to 95 °C or 110 °C.
4. Fitting Testing Jigs
Custom multi-port clamping plates for elbows, bends, reducers, and flange assemblies.
Industry Standards & Practical Applications
Bayerteq end closures are essential equipment for quality control and certification testing across the plastics processing industry:
- Long-Term Hydrostatic Strength (ISO 1167 / ASTM D1598): Sustained pressure testing of thermoplastic pipe specimens submerged in 20 °C, 60 °C, or 80 °C water baths to determine long-term creep rupture curves and MRS ratings.
- Rapid Short-Time Burst Pressure (ASTM D1599): High-rate pressurization to evaluate burst yield strength, failure characteristics, and structural resilience under peak pressure spikes.
- PVC and UPVC Free-Length Testing: Utilizing Model ECE with ISO-compliant tie-bars to prevent axial force transfer into the pipe specimen, ensuring true circumferential stress distribution.
- Molded Fittings & Joint Verification: Utilizing Model ECD to certify mechanical joints, electrofusion fittings, and fabricated T-pieces.
- High-Pressure Oil & Gas Piping: Multi-layer reinforced thermoplastic pipes (RTP) subjected to test pressures up to 800 bar.