ASME Manway Assemblies / Hinged Closures / Yoke and Bolt Doors
Elliptical Manway Assembly Overview
ASME code elliptical handholes and manways are used to provide access to ASME code pressure vessels. They are pressure rated and come with a Certificate of Conformance to ASME code, and are produced in accordance with ASME Section VIII Division 1 UG 11. Manways and handholes are made from carbon and stainless steel.
Hinged closures are designed for use where you require frequent access to pressure vessels and lines. They’re easy to install and require very little maintenance/ Replacement parts are readily available.
Sypris Tube Turns provides hinged closures for 6″ to 66″ pipe diameters. These closures are available for up to 300 PSI service. All closures utilize a standard Buna N O-ring seal set in a machined groove in the head. The head and neck of the closures are machined to a matching bevel to ensure full contact between mating surfaces. Gaskets of other materials can be furnished for an additional charge.
These hinged closures cannot be opened under pressure. The angle at which the lugs are welded to the neck and head requires the nuts to be turned several turns before they clear the lugs. This safety feature allows any residual pressure to bleed off before opening.
Ratings apply to stainless steel closures with carbon steel bolts and attachments. Closures of all stainless steel are rated lower. For temperatures higher than 450F (232C), consult Tube Turns stating temperature, pressure, fluid, and type of o-ring required. Ratings apply for closures with ASME SA325 bolts. Slightly higher ratings are available in some sizes upon application by using ASME SA193 Grade B7 bolts, resulting in a slightly higher price.
Pressure Warning Safety Feature:
The holding lugs are mounted on the closure head at an angle of approximately 10°. This provides a valuable feature, for the angular mounting requires that the Tbolt be backed off an extra turn or two before it will swing out of the holding position. Thus, if there is pressure in the vessel while it is being opened, initial turns of the bolts permit the head to lift slightly and the contained fluid escapes, alerting the operator to possible danger. Further movement of the head is restrained since the T-bolt is confined within the holding lug.
Vertical T-Bolt Closures
T-Bolt Closures with a spring-loaded head for vertical applications are furnished in sizes 10” - 42”. The need for spring loading can be determined by reference to the table below. The tabulated “Force to Lift Head” is the force to lift the head without the springs.
T-Bolt Closure Standard Materials:
(Carbon Steel)
T-Bolt Closures:
- Head/Hub: SA516 Gr.70N; Heat Code Identified;
- Test Reports with Shipment
- Bolts: SA325 Type 1;
- Parts Stamped A325
Gasket Materials:
(Default) “Buna-N” - General service. Resistant to petroleum-base hydraulic and lubricating oils; animal and vegetable oils; gases such as butane, propane, acetylene, and natural gas; aromatic and nonaromatic fuels such as gasoline, kerosene, diesel fuel, and fuel oils; anhydrous ammonia, and water. Temperature limits: -30F to 250F (-34C to 121C);
“FKM Viton” - Generally used for high-temperature services. Resistant to synthetic lubricants, petroleum-based products, some chlorinated solvents, benzene, toluene, and many acids and alkalies. Temperature limits: -15F to 400F (-26C to 204C).
“Ethylene Propylene” Superior resistance to phosphate-ester type fluids, Skydrol, Pydrol, Cellulubes, and glycol type coolants. Excellent resistance to mild acids and alkalies. Can be used in steam service. Replacing butyl rubber in most applications. Temperature limits: -70F to 250F (-57C to 121C).
“Silicone Rubber” - Good resistance to high and low-temperature dry gases, air, oxygen, and ozone. Maybe satisfactory in high-aniline oils, but not recommended for use with most petroleum base produces. Temperature limits: -65F to 450F (-54C to 232C).
Sanitary Elliptical Manways
Sanitary Elliptical Manways is an outward–opening hinged tank closure. Sanitary elliptical manways are made in stainless steel T304, T316L, custom fabrication is available. Sanitary manways mainly applied for the tanks and vessels of food, beverage, chemical, etc. Sypris Tube Turns offers a full line tank manways to processing equipment, and meet your every need of hygienic industries.
- All available polished Inside/Outside from 80 Grit to 320 Grit (5-10 Ra)
- Available ID Manway sizes: 16″, 18″, 20″, 22″, 24″, 26″, 28″, and 30″ (special sizes available upon request)
- Flat Gasket Types: Silicone (PC and PC Class VI), EPDM (White, Black, or Class VI), Viton? (White or Black), Teflon? Encapsulated (Silicone or Viton? Insert)
Ordering Data:
Ordering Data When inquiring and/or purchasing Tube Turns Hinged Closures, please specify the following:
1. Quantity required
2. Size required
3. Material required
4. Design conditions - both pressure and temperature
5. Minimum design metal temperature - the lowest temperature to which closure will be subjected.
6. Application - horizontal (opens like a car door) or vertical (opens like a car hood)
7. Bore (wall thickness) required
8. ASME code stamp and partial data reports required
9. 0-ring materials required
10. Corrosion allowance if applicable.
Need a Quote?
CONTACT US
For Sales Support and General Questions Contact:
Robert Stanton- Owner/Sales
CELL (219-851-3333)
Nick Stanton- Sales Manager
CELL (219-363-3949)
Stanton Sales & Service LLC
2397 E Division Rd, La Porte, IN 46350, US
Office Phone- 219-363-3949 [email protected]