Bladder Accumulators
ASME WP: 2,000, 3,000, 5000 PSI.
Carbon Steel, Stainless Steel
Lube Oil, Water & Chemical Services
Overview Our standard bladder accumulator is designed for energy storage, pulsation dampening, shock absorption in the hydraulic system, consisting of a molded rubber bladder inside a forged steel shell with a nitrogen gas valve on one end and a fluid port at the other. All of our bladder accumulators are ASME code stamped and interchangeable with major brands on the market. The bladders, anti-extrusion rings, O-rings and seals are all made in USA or Europe with the highest quality. They are widely used in hydraulic power units, blowout preventer (BOP) systems, surge suppressions, pump pulsation controls, etc. with the following major features:
- Rapid response to pressure changes and work
- Complete separation of gas and fluid
- Highly resistant to fluid contamination
- Low maintenance, trouble-free operation
- Readily available, low cost replacement parts
- Eliminate costly down time on expensive systems due to simple repairs
Certifications
ASME B&PV Code: SEC VIII Division 1
ASME Appendix 22-1-15 Gal. 4000 PSI/6600 PSI, D.F 3 to 1
Material Compliance: NACE 0175, 0103
- 4. Gas Valve
- Standard 3000/4000 PSI with valve core
- 4000 PSI, 5000 PSI, 6500 PSI, 10000 PSI, metal seal, military type
- 1. Shell (Top & Bottom Repairable)
- Standard carbon steel, SA372, 3000/6600 PSI
- Carbon steel with nickel plate or epoxy coating
- Stainless steel SS316, 2000 PSI
- Certificates: ASME, SELO, CRN, CE/PED
- 5. Anti-extrusion Ring
- Standard carbon steel metal, nickel plate
- Stainless steel metal
- Various rubber compounds
- 2. Bladder Compound
- Standard Nitrile, Buna-N
- Low Temp. Nitrile; High Temp Nitrile
- Butyl
- EPDM
- Hydrin
- Viton/FKM
- 6. Seals
- Stainless steel metal back up ring
- Various rubber compounds
3. Fluid Port Assembly
- Standard NPT 1-1/4", 2"; SAE #20, #24
- Metric M42X2; M48X2
- High flow 4" NPT; M95X2
- Flange adapters: #150; #300; #600; #900
- Materials: carbon steel; carbon steel with nickel plate; stainless steel
- materials made in USA
High Pressure Accumulators, RAS
Carbon Steel Accumulators
- Standard Oil Service
- Water & Chemical Service
Specifications:
- Carbon steel shell, ASME Certified with U stamp, 9” diameter
- Operating Pressures: 3000PSI/5000PSI/6600PSI
- Standard sizes from 1 to 15 Gallons, Top/Bottom Repairable
- Highest quality US/European made bladders
- Various bladder compound options
- Multiple types of fluid port including Hi-flow
- Special coating options for water and chemical services
- Custom products are available by request
All Stainless Steel Accumulators
- specially designed for water services, food industries, corrosive chemical medium, and other harsh environment applications.
Specifications:
- SS316 shell, ASME Certified with U stamp, 9” diameter
- Wetted parts, SS316; other non-wetted parts, SS300 series
- Max. operating Pressures: 2000PSI
- Standard sizes from 1 to 15 Gallons, Top & Bottom Repairable
- Highest quality US/European made bladders
- Various bladder compound options
- Multiple types of fluid port including Hi-flow
- Custom products are available by request
- Shell Material & Coating Recommendations
Stainless steel shell is the best protection for water and chemical services. But it generally takes long lead time and is costly. Using protective coating and stainless steel components is an economical alternative way for water and chemical applications. Our accumulator products have different service options on the materials to meet customers’ requirements. See the following table or contact us if you need more help.
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Material |
Material |
Parts |
Parts |
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|---|---|---|---|---|---|---|
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(-) |
carbon steel |
carbon steel |
carbon steel |
carbon steel |
protective lubrication interior; primed black exterior |
lube oil service, hydraulic units |
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|
carbon steel |
carbon steel+ Nickel plate |
stainless steel |
carbon steel+ Zinc plate |
Nickel plate interior; Zinc rich material exterior |
standard water service |
|
|
carbon steel |
stainless steel 316 |
stainless steel |
stainless steel |
Nickel plate interior; Zinc rich material exterior |
high water and chemical service |
|
|
carbon steel |
stainless steel 316 |
stainless steel |
stainless steel |
Phenolic and epoxy coating interior and exterior, 10-12 mils. marine paint |
harsh environment, offshore drilling, subsea. (extreme water) |
|
|
stainless steel 316 |
stainless steel 316 |
stainless steel |
stainless steel |
(coating by demand) |
best corrosion protection, food industry, lab, clean surface, highly corrosive water & chemicals |
Bladder Gas Stem:
Fluid Port Assembly:
Custom flange & adapters:
Also see our RAL- low pressure accumulators (up to 700 PSI), which are especially designed for flange connections.
SAE 4-bolt split flanges for RAS high pressure series (SAE J518, code 61, 2″, 3000 PSI; SAE J518, code 62, 1.5″, 5000/6,600 PSI)
Major Manufacturers' standard models*
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Oil Air |
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RAS-002C3B01N |
BA-002B3U01A1 |
SB330-1A1/112S-210D |
A-1QT-3100 |
N/A |
EHV 1-330/90-A25GB-200 |
1QT-100-1 |
|
|
RAS-01C3B01N |
BA-01B3U01A1 |
SB330-4A1/112S-210D |
A-1-3100 |
TBR30-1NMCA |
EHV 4-330/90-A25GB-200 |
1-100-1 |
|
|
RAS-02C3B01N |
BA-02B3U01A1 |
SB330-10A1/112S-210D |
A-2.5-3100 |
TBR30-2.5NMAA |
EHV 10-330/90-A25GB-200 |
2.5-100-2 |
|
RAS-02C3T01N |
BA-02T3U01A1 |
SB330TR-10A1/112S-210D |
A-2.5TR-3100 |
TBRT30-2.5NMAA |
N/A |
T-2.5-100-2 |
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RAS-05C3B01N |
BA-05B3U01A1 |
SB330-20A1/112S-210D |
A-5-3100 |
TBR30-5NMAA |
EHV 20-330/90-A25GB-200 |
5-100-2 |
|
RAS-05C3T01N |
BA-05T3U01A1 |
SB330TR-20A1/112S-210D |
A-5-TR-3100 |
TBRT30-5NMAA |
N/A |
T-5-100-2 |
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|
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RAS-10C3B01N |
BA-10B3U01A1 |
SB330-32A1/112S-210D |
A-10-3100 |
TBR30-10NMAA |
EHV 32-330/90-A25GB-200 |
10-100-2 |
|
RAS-10C3T01N |
BA-10T3U01A1 |
SB330TR-32A1/112S-210D |
A-10-TR-3100 |
TBRT30-10NMAA |
N/A |
T-10-100-2 |
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|
|
RAS-11C3B01N |
BA-11B3U01A1 |
SB330-42A1/112S-210D |
A-11-3100 |
TBR30-11NMAA |
EHV 42-330/90-A25GB-200 |
11-100-2 |
|
RAS-11C3T01N |
BA-11T3U01A1 |
SB330TR-42A1/112S-210D |
A-11-TR-3100 |
TBRT30-11NMAA |
N/A |
T-11-100-2 |
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RAS-15C3B01N |
BA-15B3U01A1 |
SB330-54A1/112S-210D |
A-15-3100 |
TBR30-15NMAA |
EHV 57-330/90-A25GB-200 |
15-100-2 |
|
RAS-15C3T01N |
BA-15T3U01A1 |
SB330TR-54A1/112S-210D |
A-15-TR-3100 |
TBRT30-15NMAA |
N/A |
T-15-100-2 |
|
* Standard oil service, top & bottom repairable, NPT. Model numbers may change without notice. Check our specifications before order.
Why Customers Like Our 2-piece Type Bladder Gas Stems?
Our standard bladder gas valve stem is 2-piece type with separate gas valve included in the bladder repair kit. This kind of design is easier and safer to use and replace and most of all, more durable and can save a lot of potential costs.
Bladder Failure?
Bladder failure can happen during applications. Besides the material quality issues, the most common reason is the improper installation and pre-charging procedures. Many customers do not read and follow the technical instructions at all.
Check our technical articles of bladder installation and pre-charging instructions. Subscribe our technical posts regarding other accumulator maintenance, safety issues and troubleshooting highlights.
Do Not Use Wrong Materials on Your Accumulators. Always use our recommended materials, tools, and accessories.
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