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Engineered Hydraulic Specification

Heavy-Duty Replacement Accumulator Bladder

Schwerll Industrial Fluid Power Equipment - Bladder For Adhesive‑structured Bladder Type Accumulators
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🏆 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 MPa Working Pressure
0.1–1,500 L Volume Range
-40°C to +150°C Temp Tolerance
1.5× PN Proof Hydraulic Test

Direct Factory Technical Inquiry & Fast RFQ

Contact Schwerll engineering sales directly for custom volume sizing, pressure ratings, material compatibility and volume pricing.

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⏱️ < 4h Engineering Response 🧪 100% Hydro-Tested (1.5× PN) 🔒 Strict NDA Protection

Product Specifications & Engineering Data

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; 
Heavy-Duty Replacement Accumulator Bladder - Structural Cross-Section and Component Breakdown

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.

International Pressure Vessel Certifications

Every Schwerll accumulator is designed, inspected, and validated against international safety and quality standards.

🏆

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.

🇪🇺

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.

Standard Lead Time

Standard SKU2–4 Weeks
ASME / PED Certified6–8 Weeks
Custom Large Bore (>350mm)8–12 Weeks
Complete Accumulator StationProject-Specific
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