Manway Nozzle Gaskets
Parker’s Sure Torque manway nozzle gasket design will improve system performance, simplify assembly and lower your total system cost. The design features an over-molded stainless steel compression limiter that incorporates single or multiple materials on the gasket assembly to meet a variety of chemical resistance requirements.
Manway NARs (Non-Accidental Release) that have plagued the rail industry for more that a decade are eliminated with the Parker design and proper installation practices. The stainless steel compression limiter will allow the bolt retention to remain constant over its seal life, provide a robust controlled compression seal and allow for repeated usage without seal deterioration.
Product Highlights:
- Speedy assembly
- Allows perfect alignment
- Maintains bolt torque retention
Product Benefits
- Speedy assembly
- Allows perfect alignment
- Provides gasket identification/traceability
- Visual confirmation of gasket placement
- Maintains bolt torque retention
- Eliminates gasket creep
- Extends seal life
- Allows multiple gasket usage
- Eliminates gasket ability to fall into tanker
- Added chemical resistance
Nozzle Design / Validation
Testing has proven that the Parker design maintained bolt torque within 1% (Chart 1) of installation as compared to today’s typical seal designs that can lose bolt torque up to 20% of installation in a 24 hour period. This design feature is the first to allow a tanker manufacturer or maintenance facility the option to simplify design and speed securement without the worry of spills due to gasket relaxation or creep. The Parker design will work with today’s many nozzle and lid configurations, making it easy to convert current fleets.
Material Traceability
Each manway nozzle gasket has product identification printed on an alignment tab to allow for full lot traceability. The printed identification includes codes for the material type, manufacturing shift and date. Parker’s internal rubber mixing capability ensures full traceability back to the raw ingredients used in production.
Manway Nozzle Gasket Installation
Parker’s Sure Torque manway nozzle gasket design makes it easy to install in the field. The recommended installation and securement procedure is as follows:
Installation
Prior to installation, check to see that the mating surfaces are clean and free of defects and corrosion (reference M-1003, AAR specification, appendix D) that could affect a tight joint. Install the gasket appropriate to the commodity to be transported (see charts, page 3) so that the four installation tabs (see figure 1) are in position on the outside diameter of the manway nozzle. Close the lid slowly and position the bolts and nuts finger tight.
Securement
The Parker Manway nozzle gasket design incorporates a stainless steel compression limiter that acts a positive dead stop when tightening the nuts onto the Manway assembly. The sure torque design protects the integrity of the seal and allows the bolts to be torqued to an appropriate yield depending on the bolt type used in accordance with ASTM and the manufacture’s recommendations. NORMALLY 60% OF BOLT YIELD IS RECOMMENDED.
Note: CLEANING & lubricating bolt threads will reduce torque loss due to friction. Utilizing thoroughly hardened steel washers (e.g, ASTM F-436) should be used for even load distribution during gasket installation. DO NOT PUT LUBRICANT ON THE GASKET.
Tighten the nuts with properly calibrated torque or impact wrenches in a sequential order (figure 2) as recommended by the AAR, taking a minimum of three passes to achieve the required torque.
The stainless steel compression limiter will maintain the required torque until the manway needs to be opened.
Material Selection
Parker can offer a wide range of elastomers to accommodate the various critical sealing challenges faced in rail transportation. Selecting a suitable material is critical to ensure long-term sealability. For aggressive chemicals, the addition of a PTEF overmolded film provides an extra layer of security, excellent chemical resistance, a wide service temperature and non-stick properties.
This warranty comprises the sole and entire warranty pertaining to items provided hereunder. seller makes no other warranty, guarantee, or representation of any kind whatsoever. All other warranties, including but not limited to, merchant ability and fitness for purpose, whether expressed, implied, or arising by operation of law, trade usage, or course of dealing are hereby disclaimed. Notwithstanding the foregoing, there are no warranties whatsoever on items built or acquired wholly or partially, to buyer’s designs or specifications.
Limitation of remedy: Seller’s Liability arising from or in any way connected with the items sold or this contract shall be limited exclusively to repair or replacement of the items sold or refund of the purchase price paid by buyer, at seller’s sole option. In no event shall seller be liable for any incidental, consequential or special damages of any kind or nature whatsoever, including but not limited to lost profits arising from or in any way connected with this agreement or items sold hereunder, whether alleged to arise from breach of contract, expressed or implied warranty, or in tort, including without limitation, negligence, failure to warn or strict liability.
- Details
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Product Benefits
- Speedy assembly
- Allows perfect alignment
- Provides gasket identification/traceability
- Visual confirmation of gasket placement
- Maintains bolt torque retention
- Eliminates gasket creep
- Extends seal life
- Allows multiple gasket usage
- Eliminates gasket ability to fall into tanker
- Added chemical resistance
Nozzle Design / Validation
Testing has proven that the Parker design maintained bolt torque within 1% (Chart 1) of installation as compared to today’s typical seal designs that can lose bolt torque up to 20% of installation in a 24 hour period. This design feature is the first to allow a tanker manufacturer or maintenance facility the option to simplify design and speed securement without the worry of spills due to gasket relaxation or creep. The Parker design will work with today’s many nozzle and lid configurations, making it easy to convert current fleets.
Material Traceability
Each manway nozzle gasket has product identification printed on an alignment tab to allow for full lot traceability. The printed identification includes codes for the material type, manufacturing shift and date. Parker’s internal rubber mixing capability ensures full traceability back to the raw ingredients used in production.Manway Nozzle Gasket Installation Parker’s Sure Torque manway nozzle gasket design makes it easy to install in the field. The recommended installation and securement procedure is as follows:
Installation
Prior to installation, check to see that the mating surfaces are clean and free of defects and corrosion (reference M-1003, AAR specification, appendix D) that could affect a tight joint. Install the gasket appropriate to the commodity to be transported (see charts, page 3) so that the four installation tabs (see figure 1) are in position on the outside diameter of the manway nozzle. Close the lid slowly and position the bolts and nuts finger tight.
SecurementThe Parker Manway nozzle gasket design incorporates a stainless steel compression limiter that acts a positive dead stop when tightening the nuts onto the Manway assembly. The sure torque design protects the integrity of the seal and allows the bolts to be torqued to an appropriate yield depending on the bolt type used in accordance with ASTM and the manufacture’s recommendations. NORMALLY 60% OF BOLT YIELD IS RECOMMENDED.
Note: CLEANING & lubricating bolt threads will reduce torque loss due to friction. Utilizing thoroughly hardened steel washers (e.g, ASTM F-436) should be used for even load distribution during gasket installation. DO NOT PUT LUBRICANT ON THE GASKET.
Tighten the nuts with properly calibrated torque or impact wrenches in a sequential order (figure 2) as recommended by the AAR, taking a minimum of three passes to achieve the required torque.
The stainless steel compression limiter will maintain the required torque until the manway needs to be opened.
- Specs
-
Material Selection
Parker can offer a wide range of elastomers to accommodate the various critical sealing challenges faced in rail transportation. Selecting a suitable material is critical to ensure long-term sealability. For aggressive chemicals, the addition of a PTEF overmolded film provides an extra layer of security, excellent chemical resistance, a wide service temperature and non-stick properties.
- Resources
- Warranty
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This warranty comprises the sole and entire warranty pertaining to items provided hereunder. seller makes no other warranty, guarantee, or representation of any kind whatsoever. All other warranties, including but not limited to, merchant ability and fitness for purpose, whether expressed, implied, or arising by operation of law, trade usage, or course of dealing are hereby disclaimed. Notwithstanding the foregoing, there are no warranties whatsoever on items built or acquired wholly or partially, to buyer’s designs or specifications.
Limitation of remedy: Seller’s Liability arising from or in any way connected with the items sold or this contract shall be limited exclusively to repair or replacement of the items sold or refund of the purchase price paid by buyer, at seller’s sole option. In no event shall seller be liable for any incidental, consequential or special damages of any kind or nature whatsoever, including but not limited to lost profits arising from or in any way connected with this agreement or items sold hereunder, whether alleged to arise from breach of contract, expressed or implied warranty, or in tort, including without limitation, negligence, failure to warn or strict liability.
