Round manways

(89)

From stock

Round manway W1/C/MINI (DN150)

Round manway

W1/C/MINI (DN150)

From stock

Round manway W1/A (DN220-DN600)

Round manway

W1/A (DN220-DN600)

New product

Round manway W4/A (DN220-DN500)

Round manway

W4/A (DN220-DN500)

New product

Round manway W4/B (DN220-DN500)

Round manway

W4/B (DN220-DN500)

Round manway W4/C (DN220-DN500)

Round manway

W4/C (DN220-DN500)

Round manway W4/D (DN220-DN500)

Round manway

W4/D (DN220-DN500)

Round manway E117 (DN300)

Round manway

E117 (DN300)

Round manway E118 (DN400)

Round manway

E118 (DN400)

Round manway E15P (DN150)

Round manway

E15P (DN150)

Round manway A550 (DN300-DN600)

Round manway

A550 (DN300-DN600)

Round manway A560 (DN200-DN600)

Round manway

A560 (DN200-DN600)

Round manway A560R (DN300-DN600)

Round manway

A560R (DN300-DN600)

Round manway A570 (DN200-DN600)

Round manway

A570 (DN200-DN600)

Round manway A570R (DN300-DN600)

Round manway

A570R (DN300-DN600)

Round manway A580 (DN200-DN600)

Round manway

A580 (DN200-DN600)

Round manway A590 (DN300-DN600)

Round manway

A590 (DN300-DN600)

Round manway A540 (DN200-DN600)

Round manway

A540 (DN200-DN600)

Round manway A520 (DN200-DN600)

Round manway

A520 (DN200-DN600)

Round manway A930 (DN150-DN600)

Round manway

A930 (DN150-DN600)

Round manway E/S (DN223-DN602)

Round manway

E/S (DN223-DN602)

Round manway A940 (DN220-DN600)

Round manway

A940 (DN220-DN600)

Round manway A960 (DN150-DN600)

Round manway

A960 (DN150-DN600)

Round manway A960R (DN220-DN600)

Round manway

A960R (DN220-DN600)

Round manway A970 (DN150-DN600)

Round manway

A970 (DN150-DN600)

Round manway A970R (DN220-DN600)

Round manway

A970R (DN220-DN600)

Round manway A980 (DN220-DN600)

Round manway

A980 (DN220-DN600)

Round manway E/1S (DN223-DN602)

Round manway

E/1S (DN223-DN602)

Round manway A1020 (DN300-DN600)

Round manway

A1020 (DN300-DN600)

Round manway E/P (DN223-DN602)

Round manway

E/P (DN223-DN602)

Round manway A1080 (DN800-DN1200)

Round manway

A1080 (DN800-DN1200)

Round manway A1090 (DN800-DN1200)

Round manway

A1090 (DN800-DN1200)

Round manway A790 (DN200-DN300)

Round manway

A790 (DN200-DN300)

Round manway A800 (DN300-DN420)

Round manway

A800 (DN300-DN420)

Round manway A800R (DN380-DN420)

Round manway

A800R (DN380-DN420)

Round manway E/1P (DN223-DN602)

Round manway

E/1P (DN223-DN602)

Round manway E/M (DN223-DN602)

Round manway

E/M (DN223-DN602)

Round manway E/1M (DN223-DN1540)

Round manway

E/1M (DN223-DN1540)

Round manway E/1D (DN402-DN602)

Round manway

E/1D (DN402-DN602)

Round manway E/1B (DN502-DN792)

Round manway

E/1B (DN502-DN792)

Round manway E/1NZ (DN502)

Round manway

E/1NZ (DN502)

Round manway E51 (DN502)

Round manway

E51 (DN502)

Round manway E119 (DN402)

Round manway

E119 (DN402)

Round manway E42/1S (DN420)

Round manway

E42/1S (DN420)

Round manway E40/1F (DN402)

Round manway

E40/1F (DN402)

Round manway P31-240 (DN200-DN599)

Round manway

P31-240 (DN200-DN599)

Round manway P12-510 (DN504-DN800)

Round manway

P12-510 (DN504-DN800)

Round manway P22-238 (DN204-DN400)

Round manway

P22-238 (DN204-DN400)

Round manway P22-265 (DN504-DN604)

Round manway

P22-265 (DN504-DN604)

Round manway P22-265ATR (DN504)

Round manway

P22-265ATR (DN504)

Round manway P22-800 (DN800)

Round manway

P22-800 (DN800)

Round manway P22-233 (DN204-DN400)

Round manway

P22-233 (DN204-DN400)

Round manway P22-443 (DN457-DN600)

Round manway

P22-443 (DN457-DN600)

Round manway P31-200 (DN200-DN790)

Round manway

P31-200 (DN200-DN790)

Round manway P31-498 (DN430-DN595)

Round manway

P31-498 (DN430-DN595)

Round manway P31-080 (DN790)

Round manway

P31-080 (DN790)

Round manway P31-935 (DN900-DN1400)

Round manway

P31-935 (DN900-DN1400)

Round manway BP405 (DN410)

Round manway

BP405 (DN410)

Round manway BP420-490 (DN427-DN495)

Round manway

BP420-490 (DN427-DN495)

Round manway B150 (DN154-DN495)

Round manway

B150 (DN154-DN495)

Round manway B150SC (DN154-DN495)

Round manway

B150SC (DN154-DN495)

Round manway B400 (DN403)

Round manway

B400 (DN403)

Round manway B600 (DN606-DN1406)

Round manway

B600 (DN606-DN1406)

Round manway B300PV (DN308-DN608)

Round manway

B300PV (DN308-DN608)

Round manway BC440TD (DN445-DN495)

Round manway

BC440TD (DN445-DN495)

Round manway BV430 (DN435)

Round manway

BV430 (DN435)

Round manway P32-305 (DN300-DN600)

Round manway

P32-305 (DN300-DN600)

Round manway P33-114 (DN204-DN354)

Round manway

P33-114 (DN204-DN354)

Round manway P33-212 (DN504-DN604)

Round manway

P33-212 (DN504-DN604)

Round manway P33-200 (DN200-DN600)

Round manway

P33-200 (DN200-DN600)

Round manway P33-150 (DN145-DN600)

Round manway

P33-150 (DN145-DN600)

Round manway P33-196 (DN200-DN600)

Round manway

P33-196 (DN200-DN600)

Round manway P35-418 (DN432)

Round manway

P35-418 (DN432)

Round manway P35-315 (DN384)

Round manway

P35-315 (DN384)

Round manway P42-020 (DN490)

Round manway

P42-020 (DN490)

Round manway P42-021 (DN590)

Round manway

P42-021 (DN590)

Round manway P42-080 (DN790)

Round manway

P42-080 (DN790)

Round manway P42-1035 (DN1035-DN1400)

Round manway

P42-1035 (DN1035-DN1400)

Round manway C93 (DN370)

Round manway

C93 (DN370)

Round manway C79 (DN370)

Round manway

C79 (DN370)

Round manway C47 (DN300-DN600)

Round manway

C47 (DN300-DN600)

Round manway C41 (DN300)

Round manway

C41 (DN300)

Round manway K-MC (DN600-DN800)

Round manway

K-MC (DN600-DN800)

Round manway K-PC (DN50-DN300)

Round manway

K-PC (DN50-DN300)

Round manway XG400 (DN400-DN500)

Round manway

XG400 (DN400-DN500)

Round manway X10311 (DN500)

Round manway

X10311 (DN500)

Round manway X2311VAL (DN150-DN500)

Round manway

X2311VAL (DN150-DN500)

Round manway X1312MT (DN100-DN350)

Round manway

X1312MT (DN100-DN350)

Round manway X10324MT (DN500-DN600)

Round manway

X10324MT (DN500-DN600)

Round manway X3348MT (DN200)

Round manway

X3348MT (DN200)

What are round manways?

Round manways are the basic equipment of most stainless steel tanks. At the same time, this group of manways are the most numerous among all types of stainless steel manways. The number of designs, patterns, diameters and functionalities makes round manways the most versatile and universal group of products in the category of tank manways.

Round pressure manway

Round non-pressure manway

Among round manways, there are two basic groups:

non-pressure manways,
pressure manways.

In each of the groups mentioned there are manways equipped with hinged or non-hinged lids. The manway locking system, number of handwheels, handles, locking design and other manway components are selected depending on the diameter and application.

Selection parameters for round manways

In addition to the mentioned pressure parameter, other parameters such as:

dimension (diameter),
mounting method (top manway or side manway),
frame height and wall thickness,
construction material (AISI 304/304L or AISI 316/316L),
locking system (with handwheels, or clamp).

Below are selected parameters for the selection of round manways.

Dimensions of round stainless steel manways

Clearance diameter is one of the key elements in selecting a stainless steel manway. The offer includes both small size models (DN100-DN220) and popular diameters used in stainless steel tanks (DN300, DN400, DN420, DN450 or DN500).

Large diameter models for special applications and projects requiring an extra wide inspection opening round out the range. Among this type of models, there are all designs with diameters above DN600 (for example: DN800, DN1000, DN1200 or even DN1400).

Installation of round stainless steel manways

For round manways, the predominant installation method is mounting in the top (roof) of stainless steel tanks or process equipment. However, models designed for installation in the side (shell) of tanks are also available.

Round manways designed for top installation typically feature a lighter hinge design and, for non-pressure options, few handwheels or clamping points.

Round manway designed for top installation

Round manway for side installation

In contrast, the following features are often found with round manways for side installation:

number of clamping points around the perimeter of the manway is increased by using more handwheels or a lid cross bar,
the cover is completely removable or is fitted with a reinforced hinge,
the side manway group has a higher minimum pressure resistance threshold (due to naturally occurring fluid pressure inside the tank).

Frame height and wall thickness of round manway

Each round manway has a mounting element in the form of a frame. It is a part of a manway directly mounted in the surface of a tank or industrial equipment, in which an appropriately sized hole has been prepared in advance. Most often the mounting process is carried out by welding.

The range of the frame height parameter (often designated as "H") varies depending on the manway model. Most round manways include a height range of 60-150 mm in their specification. For standard models, the most common value is 60 mm. The designs of some manways provide for heights up to 250 mm, 500 mm or even 1000 mm. The frame height parameter is particularly important for thermally insulated tanks, where the thickness of the thermal insulation must be taken into account when fitting the equipment.

As important a parameter as the height of the frame is the thickness of its wall (often designated "SP"). The thickness of a manway frame can vary significantly depending on its intended use. For standard round stainless steel lids, this value will usually be around 2 mm. For pressure manways, the manway wall thickness is 8 mm, 10 mm or greater.

Locking systems for round manways

The vast majority of round manways have one of two types of locking systems:

with handwheels,
by means of a clamp.

Handwheels are the most common way to open and close a manway. This type of solution is used for both pressure and non-pressure manways. This is because it is common for the pressure resistance of a particular model to increase with the number of handwheels installed in it (more clamping points on the lid). So the non-pressure models will have one handwheel by default, while the pressure-resistant models will have: 4, 6, 8 or more handwheels arranged around the perimeter of the lid.

Round manway - locking by means of a clamp

Manway with handwheel locking

When choosing a manway with handwheel locking, be sure to choose the right handwheel material (typically: plastic or stainless steel). The main factors influencing the selection of an appropriate handwheel material are the temperature of the manway environment and the chemical reactivity of the medium with which the manway is intended to come into contact. The frequency of opening the lid is also important.

Another form of locking used on round manways is using a clamp. This solution involves connecting the manway frame and lid using a dedicated clamp that presses the two elements together around the perimeter of the manway. The main advantages of this solution are:

typically, the higher pressure resistance of lightweight round manways (as compared to handwheel versions),
speed of opening and closing the manway,
low minimum manway construction height (this is the main reason why manways with clamp locking are very often used in stackable pallet tanks),
possibility of achieving a hermetic seal and increased separation from external factors.

Round manway with clamp locking

We use cookies

We use cookies to facilitate the use of our websites, for statistical and advertising purposes. If you do not block these files, you agree to their use and saving them in your device's memory. Remember that you can change your browser settings yourself to block the saving of cookies. For more information, see our Privacy Policy.