🏆 ISO 9001:2015⚙️ ASME Sec. VIII🇪🇺 PED / CE🌐 EAC / CU-TR
Accumulator bladder and diaphragm
Heavy-Duty Replacement Accumulator Bladder
Model / SKU: SCH-1023|Quality: 100% FAT Inspected
The bladder of SCHWERLL’s standard‑specification bladder accumulators is manufactured using an adhesive‑bonding process. Following simulation‑based design, the bladders are produced on a dedicated production line, delivering exceptional long‑term durability. The diaphragm exhibits low permeability, providing an ideal solution for high‑end applications.
To 207 MPaWorking Pressure
0.1–1,500 LVolume Range
-40°C to +150°CTemp Tolerance
1.5× PNProof Hydraulic Test
Direct Factory Technical Inquiry & Fast RFQ
Contact Schwerll engineering sales directly for custom volume sizing, pressure ratings, material compatibility and volume pricing.
Authoritative technical parameters, fluid media tolerances, and structural design standards.
📐 2D/3D CAD Models Available
The bladder of SCHWERLL’s standard‑specification bladder accumulators is manufactured using an adhesive‑bonding process. Following simulation‑based design, the bladders are produced on a dedicated production line, delivering exceptional long‑term durability. The diaphragm features low permeability, providing an ideal solution for high‑end applications.
1. The shape and structure of the bladder are designed using simulation to ensure optimal compression and expansion characteristics;
2. The casing is manufactured using 100% virgin rubber, ensuring optimal rubber properties.
3. The casing is manufactured using the widely adopted viscose integral molding process, ensuring stable compression and oil‑drainage deformation characteristics with high oil‑drainage stability.
4. The casing is bonded using a specialized, proprietary rubber adhesive to ensure its performance characteristics after bonding.
5. All leather goods are rigorously certified to NF standards. ISO 37 standard tests;
6. A variety of rubber materials ensures broader media compatibility;
7. Rubber has a low intrinsic permeability;
Frequently Asked Questions
Direct technical answers from Schwerll fluid power application engineers regarding Heavy-Duty Replacement Accumulator Bladder.
SCHWERLL uses simulation-based bladder geometry to optimize compression and expansion cycles, then molds the casing from 100% virgin rubber with a proprietary adhesive bond. This ensures stable deformation during oil drain, low intrinsic permeability, and long-term durability in high-cycle hydraulic energy storage applications up to 207 MPa.
Yes. All rubber components are tested to ISO 37 standards, and the full accumulator range is manufactured under ISO 9001, CE, and ASME quality frameworks. A variety of rubber materials is available to broaden media compatibility. For custom sizing or special elastomers, contact SCHWERLL for application engineering support and export documentation.
International Pressure Vessel Certifications
Every Schwerll accumulator is designed, inspected, and validated against international safety and quality standards.
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ISO 9001:2015
Complete Quality Management System certification across raw material testing, precision machining, honing, welding, and final FAT pressure testing.
⚙️
ASME Section VIII Div. 1
ASME U-stamp and National Board (NB) registration available for high-pressure piston series (up to 30,000 PSI / 207 MPa) for North American & offshore deployment.
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CE Pressure Equipment Directive
PED 2014/68/EU CE marking with Notified Body conformity declaration and 3.1 material test certificates for European Union export compliance.
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TSG 21 / GB Standards
Certified in compliance with China's TSG 21-2016 Special Equipment Safety Code and GB/T 20663-2017 national pressure vessel standards.
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Multi-National Registrations
Approved configurations for CU-TR/EAC (Eurasian Union), NR13 (Brazil), AS1210 (Australia), KOSHA (Korea), and DOSH (Malaysia).
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Third-Party Inspection (TPI)
Support for client-mandated witness testing by SGS, Bureau Veritas (BV), Lloyd's Register (LR), TÜV Rheinland, Intertek, or DNV.
Custom Engineering & Ordering Flow
01
Technical Parameter Submission
Provide system operating pressures (P1/P2/P0), effective gas volume, cycle frequency, hydraulic fluid type, and ambient temperature range.
02
Computerized Volume Calculation
Our engineering team performs adiabatic or isothermal gas calculation (incorporating real gas Z-factor compressibility for pressures >20 MPa).
03
Approval Drawing & Quotation
We issue general arrangement (GA) drawings, nozzle/flange connection details, and formal commercial terms within 24–48 hours.
04
Fabrication & FAT Testing
Deep hole honing (Ra ≤ 0.2 μm), ultrasonic testing (UT), magnetic particle inspection (MT), and 1.5× hydraulic proof pressure test.
05
Export Packing & Global Delivery
Solid wooden crating with desiccants, rust preventative oil, and pre-charged N2 blanket. Incoterms: FOB Tianjin/Shanghai, CIF, or DAP.