Swing Bolt Manway technical overview.
Swing Bolt Manway from JINYI is presented in the DN500 · SS304 swing-bolt manway configuration. Use the dimension schedule, connection details and inspection requirements below when comparing this product with your pipework or equipment drawing.
On this page
What is a swing bolt manway?
A swing bolt manway uses perimeter swing-bolt hardware to secure the specified access cover.
Key dimensions and installation fit
The manway provides access through a removable vessel or tank closure. Compare the clear opening with the required access task, then check the neck, cover envelope and space needed to open or remove the cover. Oval access requires both major and minor dimensions; a davit arrangement additionally requires its lifting and swing clearance. For an arm-supported cover-handling arrangement, compare the davit manway and check the lifting and swing envelope.
How to specify the swing bolt manway
Specify cover, neck, gasket and fastener materials as an assembly. The number of bolts or shape of the cover alone does not establish a pressure-vessel rating. Clarify atmospheric, water-tight or pressure service and provide the applicable vessel-design requirements before selecting the closure.
Technical data for the swing bolt manway
| Nominal size | DN500 |
|---|---|
| Series size range | DN150–DN800 |
| Series pressure range | 0–6 bar |
| Material grade | SS304 |
| Alternative material | SS316L |
| Opening direction | Outward |
Sizes and dimensional requirements
The dimensional schedule identifies the illustrated configuration. Compare each value with the mating pipe, equipment or support drawing. A nominal designation does not replace the actual connection diameter, installation envelope or mounting detail. The choices above let you include a different configuration with your quotation request.
Dimensions and tolerance schedule
| Machined dimensions >400–1000 mm | ±0.8 mm |
|---|---|
| Machined dimensions >120–400 mm | ±0.5 mm |
Inspection, standards and documentation
Inspect the sealing seat, gasket fit, fastener arrangement and cover handling mechanism. Include any tightness-test requirement and material records in the order. Overall listed dimensions should be checked against the installation drawing because an assembly or packing envelope is different from the usable opening.
State the required product standard and edition, material records and inspection acceptance criteria before ordering. Where pressure, temperature, movement or load are relevant, provide the operating and test conditions together. Document requirements should identify the actual component and drawing revision; a general certificate does not replace a dimensional or material record for the ordered item. Review tank manhole cover manufacturing when specifying the access assembly and its acceptance checks.
Where the swing bolt manway is used
- Tank and vessel access. Compare the usable opening with the access task and available cover clearance.
- Inspection openings. Identify the gasket, fasteners and required tightness test in the closure specification.
- Custom equipment fabrication. Provide the vessel interface, neck dimensions and cover-handling arrangement.
How to order a swing bolt manway
Select the required options and send the quantity, destination, material and controlled drawing to JINYI. Include changed dimensions, mating details, finish, marking and packing requirements. The quotation defines the final configuration, inspection scope and delivery terms so the component can be checked against the intended installation.
Quantity prices and order preparation
| 1–49 pcs | US$323.05 per piece |
|---|---|
| 50–199 pcs | US$306.90 per piece |
| 200 pcs and above | US$290.75 per piece |
Freight and taxes are quoted separately. A different material, size or drawing can change the price and delivery requirements. Confirm the agreed specification before manufacture, and keep the drawing revision, selected options and ordered quantity together in the enquiry.
Other JINYI products worth comparing
Compare round bolted manway, oval bolted manway, or review the tank manhole covers catalog for other connection and configuration choices.
Request a custom swing bolt manway quotation from JINYI with the drawing and quantity required for your project.
Swing Bolt Manway selection and quotation checklist
The swing bolts and opening mechanism define the access procedure. State the direction of opening, seal arrangement and service conditions without assuming the closure is approved for every vessel duty. Use the photographed product form to identify the arrangement, then use the controlled drawing to define what will be supplied. Similar-looking components can have different end details, load paths or maintenance requirements.
Swing Bolt Manway dimensions and tolerances
The first comparison for this swing bolt manway is swing-bolt layout and opening direction. Mark the dimensions that control mating, alignment and installation space on the enquiry drawing. Give units for every value and identify the datum from which it is measured. If a dimension is critical, specify its individual tolerance and measurement method rather than relying on a general tolerance note.
The current schedule identifies nominal size: DN500; series size range: DN150–DN800; series pressure range: 0–6 bar. Read these entries together with the configuration and tolerance tables above. Reference or example values describe the displayed arrangement; the approved JINYI quotation and drawing define the ordered component. A different interface, material or service condition needs a fresh comparison.
Prepare the material and interface information
For a swing bolt manway enquiry, identify the required material designation and supplied condition. Describe the mating components, attachment method and environment. Include the operating temperature and any relevant pressure, movement or structural load. These inputs should describe the actual installation, including changes between normal operation, start-up and maintenance where applicable.
Specify coatings, surface finish and marking separately from the base material. If traceability is needed, identify the record required and how it must correspond to the delivered component. Agree whether inspection covers dimensions, material documentation, welds or functional testing; these are different checks with different acceptance criteria.
Custom swing bolt manway quotation
Attach the latest drawing revision, required quantity and delivery destination when contacting JINYI. Highlight departures from the illustrated arrangement, including changed dimensions, connections, finish and packing. For repeat orders, reference the approved configuration and list changes explicitly so an earlier drawing is not assumed to remain current.
The three price tiers above organise the displayed quantity bands. Compare quotes using the same drawing, material, inspection scope and unit of supply. A piece, a segment and a complete assembly are different units where applicable. Confirm freight, taxes, documentation and delivery terms with the final quotation instead of inferring them from the displayed unit price.
Compare related component arrangements
Evaluate this tank manway by its actual swing-bolt layout and opening direction and the required manway cover arrangement. The photographs below show separate JINYI products for comparison. They are linked to their own technical pages and are not additional gallery views of this swing bolt manway.
| Photo | Related product | Selection detail |
|---|---|---|
 | Round Bolted Manway | Access opening and bolt arrangement. Compare this separate product when the drawing requires its particular arrangement. |
 | Oval Bolted Manway | Opening axes and cover clearance. Compare this separate product when the drawing requires its particular arrangement. |
 | Davit Manway | Cover handling and davit clearance. Compare this separate product when the drawing requires its particular arrangement. |
Questions to resolve before ordering
Which dimensions need checking first?
Start with swing-bolt layout and opening direction and the mating or mounting detail. Check nominal designations against measured dimensions, then review the installation envelope. Photographs help identify the form; the drawing provides the dimensional basis for acceptance.
What should the quotation include?
A swing bolt manway quotation should identify the configuration, drawing revision, material, quantity, price basis and agreed inspection records. Keep these details together with the approved order so receiving inspection can compare the delivered product with the specified component.
Independent terminology reference
DVAI tank head profile families provides an independent reference for component terminology. Use the specified standard and edition where required by the project. This link does not establish JINYI certification, product approval or interchangeability with another manufacturer.
- DN500
- Nominal size
- DN150–DN800
- Series size range
- ±0.8 mm
- Tolerance
- 3
- Quantity tiers
- Access size — Usable opening dimensions differ from the outside cover size.
- Closure rating — Cover shape or bolt count alone does not establish a pressure rating.
- Operating clearance — Allow room for the cover and its handling mechanism.
At a glance
- Product
- Swing Bolt Manway
- Configuration
- DN500 · SS304 swing-bolt manway
- Nominal size
- DN500
- Series size range
- DN150–DN800
- Series pressure range
- 0–6 bar
Dimensions and technical specification
| Parameter | Specification |
|---|---|
| Nominal size | DN500 |
| Series size range | DN150–DN800 |
| Series pressure range | 0–6 bar |
| Material grade | SS304 |
| Alternative material | SS316L |
| Opening direction | Outward |
