Stainless Steel Manway Tank Doors. Chemical and Food Processing
High-polished surfaces to meet the requirements of the food process industry. We have options from 2B Mill finish to a sanitary mirroring #7 (320-grit) finish and everything in between.
Tube Turns manufactures a complete line of manways for all vessel applications found in the food, beer, wine, dairy, general processing, and pharmaceutical industries. Our manways can be equipped with various component options such as sight glasses, process lighting, safety grates, spring lift assist, and locking pins. Available materials are 304L and 316L stainless steel. Gasket material options include EPDM, silicone, Viton?, Teflon? encapsulated Viton? and Teflon? encapsulated silicone. Other materials are available upon request.
Any Pressure Rating
We manufacture closures for any application 0 PSI to 300 PSI ratings.
A complete unit normally costs less than the component parts for a blind or slip-on flange combination. There need be no additional expenses for hinges, hoists, davits, etc., as the closure can be fully assembled when shipped. Furthermore, installation-labor charges are held to a minimum; a single butt weld joins the closure to the vessel, vessel nozzle, or pipe.
ASME Code-Stamped Closures
Code stamping of Tube Turns Hinged Closures is available on request at a nominal extra cost. This includes (1) the furnishing of a Partial Data Sheet verifying shop inspection of the unit by a commissioned inspector of the National Board of Boiler and Pressure Vessel Inspectors, and (2) the affixing of the ASME stamp.
Automated Manway Designs Available
Tube Turns? offers Double-Bolt Yoke Style Closures that are readily adaptable to a wide variety of operating aids ranging from a single-lever chain and sprocket drives to completely automated designs, which can be operated by the touch of a button. This rapid-operating open/close automation can be driven by mechanical, electrical, hydraulic, or pneumatic power sources, to provide safe and convenient quick opening and closing for numerous applications.
Styles Available
- Chain & Sprocket Automated Closures
- Electric Automated Closures
- Hydraulic Automated Closures
- Pneumatic Automated Closures
Closure Styles
T-Bolt Style:
Vertical T-Bolt or Swing Bolt style closures installed on process chemical pressure vessels.
Tube Turns’ exclusive T-Bolt Closure is designed expressly for nominal pressure applications. Less expensive and much more satisfactory than blind flanges and job-fabricated closure devices, it is ideal for
1. Manways for storage tanks, mixing vessels, filters, separators, and other batch equipment.
2. Caps for inspection ports and other access openings on towers and reactors.
3. Handholes on processing equipment and medical or laboratory apparatus such as hyperbaric chambers.
Full-Size Range
Standard Tube Turns T-Bolt Hinged Closures are furnished in carbon steel, stainless steel, & other alloys. Sizes range from 6” thru 66”.
Safety Warning 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.
Operating Savings
Tube Turns T-Bolt Hinged Closures provide savings of time and labor. The semi-elliptical shape of the T-Bolt Closure has greater pressure-holding capacity than a flat plate of equal thickness. This permits substantial weight reduction: the head of a 24” T-Bolt Closure, for instance, weighs only 100 pounds, as compared with 410 pounds for a comparable size 150 lb blind flange. And the mechanical advantage afforded by the hinge arrangement further reduces the force needed to open a T-Bolt Closure. Bolting is also simplified. A 24” TBolt Closure has but five bolts, while the same size 150 lb flange requires 20. Furthermore, the T-bolts remain attached to the closure when it is opened, eliminating possibilities of dropped or misplaced nuts, bolts, and washers.
Tool-Less Style Closures:
Tool-Less Closures install on natural gas filter seps.
The TOOL-LESS? closure satisfies the design requirements of ASME B31.3, B31.4, B31.8, and Section VIII, Div. 1. The entire design has been verified through proven stress calculations, the latest finite element analysis software, and strain gauge testing, establishing a high level of confidence in the structural integrity of the TOOL-LESS? closure. In addition, fatigue analysis based on severe field condition data has been successfully conducted on all closure sizes and classes. TOOL-LESS? closures are available in Carbon Steel, Stainless Steel, and other alloys, along with a choice of elastomer lip seal materials to meet the user’s temperature and process compatibility requirements. quick opening closures are customizable to specific design codes, pressure ratings, material requirements, and installation conditions. Best used for: pig traps, filters, strainers, scrubbers, heat exchangers, blowdowns, and other vessels
Fast, Easy Operation Compared to Threaded Closures
TOOL-LESS? operation is smooth and direct and even the largest unit can be opened or closed in a matter of seconds by one person, and as the name implies, without special tools. Complete installation, operating and maintenance instructions are furnished with each TOOL-LESS? closure
Quick Opening Closure Tool-Less Lip Seal Design
Designed for long life, each Tool-Less Closures is furnished with a fully molded self energized lip seal with an integral stainless steel backing ring. Standard lip seal material is Buna-N (-20F to 250F); optional seal materials include FKM Viton, HNBR, Ethylene Propylene, and Explosive Decompression Resistant FKM.
Safe, quick, and reliable access to pipelines
Low Maintenance
Designed to be durable and to minimize spare parts. Lip Seals and Other spare parts are in stock when replacement is needed. Quick opening closure is customizable to specific design codes, pressure ratings, material requirements, and installation conditions.
Double Bolt Style Closures:
Horiztonal Double Bolt manway doors installed on process/Hazard pressure vessels.
The Tube Turns Double Bolt Yoke Style Closure is compact in size and functional in design. A typical unit consists of a forged hub, a hinged blanking head, split-yoke clamps, operating bolts, and a self-energizing 0-ring gasket. Materials of construction are in accord with ASME specifications and manufacture complies with applicable rules of the ASME Code for Pressure Piping and with the ASME Boiler and Pressure Vessel Code.
Size and Rating
Double-bolt yoke-style hinged closures are available in pressures ranging from 285 PSI to 6170 PSI and can be used in a horizontal or vertical application. They are furnished in Carbon Steel, Stainless Steel, Low-Temperature materials, and other alloys depending upon the availability of raw material. Adding further to the completeness of Tube Turns Hinged Closures is the availability of standard designs in sizes, 2” to 42” in carbon steel, stainless steel, and other alloys. Sizes up to 72” O.D. have been produced on special orders.
Materials of Construction
Standard construction material is Carbon Steel made to ASME specifications i.e. SA1O5 or SA106 grade B/C for the hub, SA516 grade 70 or SA105 for the head, SA1O5, SA1O6 Grade B/C or SA352 LCB for the yoke, SA193 Grade B7 for yoke bolts and SA36 for structural components. Buna-N 0- ring material is furnished unless another material is specified. Yoke bolts are fluorocarbon coated to lubricate the threads and prevent rust and corrosion of these working parts. Tube Turns Hinged Closures can be equipped with sight glasses, drains, gauges, sampling ports, etc. The size and number of such openings are dependent upon the thickness of the closure head and whether threaded or socket-weld openings are utilized. Since the welding of sight glass frames, nipples, couplings, and other appurtenances to the closure head or hub may result in distortion unless precautionary measures are taken; these attachments should be added at the time of manufacture.
Maintenance Minimized
The standard gasket for Tube Turns Hinged Closures is an oil-resistant 0-ring that is stationary when the head is being opened or closed. There is no rubbing or chafing that could cause undue wear and shorten seal life. The yokes separate evenly via the use of two yoke bolts preventing wear on the yoke contact surfaces. The yoke bolts are coated with fluorocarbon to lubricate the threads and to prevent rust and corrosion of these working parts. Many of our closures manufactured as far back as the 1960s are still in operation only requiring periodic replacement of spare parts. Tube Turns keeps a serialized record of each closure to allow easy identification of replacement parts. The Tube Turns Hinged Closure is remarkably easy to install, too...a single circumferential butt weld joining the closure hub to the pipe end or vessel nozzle does the job. Complete installation, operating and maintenance instructions are furnished with each Tube Turns Hinged Closure and additional copies are available upon request.
0-Ring Materials
The maximum temperatures are based on 100% compression set in 1000 hours. The 0-rings may be used at higher temperatures but with an undetermined decreased life.
“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);
“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-based products. Temperature limits: -65F to 450F (-54C to 232C)
Pressure Warning Device
With Yoke Positioning Plate Double Bolt Yoke Closures are equipped with 2 pressure warning devices on each closure. The Pressure Warning Device with yoke positioning plate provides visual and mechanical assurance that the yokes are in the correct position over the head for the commencement of operations. Additionally, the pressure warning device serves the purpose of alerting the operator to any residual pressure in the vessel should the operator inadvertently attempt to open the closure before all pressure has been relieved. A pressure warning device is located at each of the yokes splits with one of the positioning lugs attached to each yoke half. Tightening the holding nut on the nipple provides a seal and locks the hinged positioning plate on the positioning lugs. Loosening the holding nut breaks the seal and provides a means by which the operator can determine whether the vessel has been completely relieved of internal pressure. Continued loosening of the holding nut will allow the disengagement of the positioning plate from the positioning lugs, permitting the yoke halves to be spread and the closure to be opened.
Threaded Quick Opening Closures:
Vertical Threaded Manway Closures installed on filter vessel.
Each Threaded Closure 6” and larger has a Pressure Warning Device to alert the operator of any internal pressure in the pipe or vessel before opening the Head. The Pressure Warning Device is manufactured from stainless steel to provide corrosion protection for this safety item. The Pressure Warning Device is optional on the 2” through 4” sizes and must be added if the closure requires an ASME Code Stamp. The Pressure Warning Device meets the requirements of UG-35 of ASME Section VIII, Division 1. The Threaded Closure is designed to alert the operator of residual pressure in the event the closure is opened inadvertently.
Closure Materials
Threaded Closure Hubs and Heads are made from the materials listed below: Hubs 2” - 8”: SA-106 Grade C X46 10” - 36”: SA-105/SA-350 LF2 Cl. 1/ A694-F52 Heads 2” - 6”: SA-352 Grade LCB 8” - 12”: SA-105/SA-350 LF2 Cl. 1 14” - 36”: SA-516 Grade 70N All closure hubs have high specified yield strengths to facilitate mating to higher pipe yield strengths as provided by Figure I5 of ASME B31.8 and Figure 434.8.6(a)-(2) of ASME B31.4. Higher yield weld hub materials and hub and head materials conforming to the latest NACE Standard MR0175/ISO 15156 are available upon request. Minimum Design Metal Temperature (MDMT) of -20 °F (-29 °C) is standard up to extra heavy walls for 2” thru 8” sizes. Lower MDMT’s or MDMT on heavier walls can be developed upon request. MDMT of -50 °F (-46 °C) is standard for 10” thru 36” sizes. Elastomeric O-ring seals are used in Tube Turns Threaded Closures. The standard seal is 70 Durometer Buna-N which has a temperature range of -30° F to +250° F (-34 °C to 121 °C). For the higher pressure Class 900 closures, a 90 Durometer Buna-N seal is standard.
Pressure Ratings
ALLOWABLE WORKING PRESSURE RATINGS: The maximum allowable working pressures refer to those established for ANSI/ASME B16.5 Flange Ratings for carbon steel materials. ASME CL150, CL300, CL600, CL900
Quality Control
The Threaded Closure is manufactured in Louisville, KY, USA. The Tube Turns Division quality system meets the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, Appendix 10. The quality system is audited by an independent authorized inspection agency. The quality system controls order analysis, calibration, drawings, documents, materials, processes, welding, nondestructive examination, and inspection. Raw materials are inspected for dimensional acceptability and proper heat code identification. Mill test reports are checked to ensure proper physical and chemical properties of all pressure retaining components. Certified material test reports are shipped with each closure. A serial number is assigned to each Threaded Closure at order entry and is permanently stamped on the closure. The actual heats of material used for the individual closures are permanently recorded and stamped on all pressure retaining components. This provides traceability to the material test reports for every closure. The Tube Turns Division can meet the most stringent customer material and testing requirements. Special customer requirements are evaluated by the Engineering Department.
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Required Ordering Data
In order to reply promptly to inquiries and service orders, the following basic order data requirements are needed:
1. Size
2. The maximum wall thickness of pipe and yield strength
3. Maximum design pressure
4. Maximum and minimum design temperature
5. Corrosion allowance
6. Code requirements (stamp, certifications, etc)
7. Quantity
8. Maximum test pressure
9. O-ring material (Buna-N is standard)
10. Installation position: Closure centerline either horizontal or vertical a. Horizontal hinge requirement either left hand (standard) or right hand. See Closure Dimension table for details on hinging.
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]