Betts 8310 Manual

Form Title:
Document #:
INSTALLATION AND MAINTENANCE MANUAL
MM-MH001
(Form: DEF-006A-1)
Revision:
0
Document Title:
Date:
FULL OPENING MANHOLE
Jan. 14, 2022
Page:
1 of 6
Betts Industries Inc. ▪814·723·1250 ▪1800 Pennsylvania Ave. West ▪Warren, PA 16365 ▪www.BettsInd.com
Print Date: 1/14/2022 This form is considered uncontrolled 24 hrs. after print date.
MODEL NUMBERS (Including, but not inclusive)
8310 8327 8368 8369 8370 8387 8350 8355 8261 8205 8260
8380 8324 8329 8303 8399 8418 8535 8525 8530
Table of Contents:
1.0 General
2.0 Installation and Use

Form Title:
Document #:
INSTALLATION AND MAINTENANCE MANUAL
MM-MH001
(Form: DEF-006A-1)
Revision:
0
Document Title:
Date:
FULL OPENING MANHOLE
Jan. 14, 2022
Page:
2 of 6
Betts Industries Inc. ▪814·723·1250 ▪1800 Pennsylvania Ave. West ▪Warren, PA 16365 ▪www.BettsInd.com
Print Date: 1/14/2022 This form is considered uncontrolled 24 hrs. after print date.
1.0 General Maintenance Manual Guidelines
1.1 It is strongly recommended that thisentire manual beread priorto any operation, disassembly,
or assembly of this equipment.
1.2 Betts Industries, Inc. provides this manual as a guideline for reference only and assumes no
responsibility for personal or property damage that may occur in conjunction with this manual.
Betts Industries, Inc. cannot be held responsible for incorrect installation, operation or
maintenance of product.
1.3 Betts Industries, Inc. recommends all equipment be placed on a regular maintenance
schedule that includes the routine replacement of seals and gaskets and visual inspection for
leaks and corrosion. The end user must make their own determination and set their own
schedule based upon use and environment. In some cases, regulations may dictate the
minimum testing frequency of items. Make sure operators are aware of all applicable codes.
1.4 Only trained personnel should attempt to perform maintenance on this equipment.
1.5 As with any maintenance work, proper safety gear and procedures must be used at all times.
A list of hazards may include but are not limited to contents under pressure, loaded springs,
residual product, flammable liquid and vapors, pinch points.
1.6 Safety alert symbols are used to alert operator to potential personal injury hazards. These
symbols are per ANSI Z535.5 and are listed below. Operator MUST obey all instructions that
follow a safety symbol.
Alerts will be used to indicate known safety concerns. Additional concerns are possible and
should be identified and avoided by the operator.
Indicates an imminently hazardous situation which, if
not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
It may also be used to alert against unsafe practices.
1.7 Product Warranty shall be void if product is subject to misapplication, misuse, neglect,
alteration, or damage.
1.8 Specific design details described in this document are for reference only and are subject to
change without notice. See Betts Industries, Inc.web page for the most recent revision to this
document. www.bettsind.com
1.9 WARNING: This product can expose you to chemicals including Chromium (hexavalent
compounds), which is known to the State of California to cause cancer and birth defects or
other reproductive harm. For more information go to: www.P65Warnings.ca.gov
1.10 For additional questions or more detailed technical assistance, contact the Betts Industries,
Inc. Sales or Engineering Department at [phone].

Form Title:
Document #:
INSTALLATION AND MAINTENANCE MANUAL
MM-MH001
(Form: DEF-006A-1)
Revision:
0
Document Title:
Date:
FULL OPENING MANHOLE
Jan. 14, 2022
Page:
3 of 6
Betts Industries Inc. ▪814·723·1250 ▪1800 Pennsylvania Ave. West ▪Warren, PA 16365 ▪www.BettsInd.com
Print Date: 1/14/2022 This form is considered uncontrolled 24 hrs. after print date.
2.0 Installation and Use
This document provides details on maintenance and use of Betts Full Opening Pressure
Manhole. To ensure optimal performance, the following steps must be followed. This
information is intended to be used as a general guide. The end user shall develop a more
detailed maintenance procedure depending on product being hauled and service conditions.
Cargo tank maintenance and operation is dangerous. Several known hazards are listed below
but all additional hazards must be identified and addressed by the tank manufacturer or
owner/operator.
Fall Hazard –Climbing on top of a cargo tank is dangerous
and should be avoided without proper safety equipment.
Falling can result in death or serious injury.
Pressure Hazard –Cargo tank may contain residual
pressure. Failure to safely relieve could result in sudden loss
of pressure causing death or serious injury.
Flammable Product –Cargo tank may contain product that
could present a risk of fire, explosion, asphyxiation or other
hazards resulting in death or serious injury.
Corrosive Material –Cargo tank may contain corrosive
material. Protective clothing including gloves and face shield
shall be worn.
1. Manhole Installation: Proper welding procedure of the collar to the tank is imperative.
Exercise care to ensure collar remains flat and round during installation in the tank. If
necessary, a weld fixture should be used to prevent distortion. Heat generated by welding
should be kept to a minimum. A warped collar will not function properly.
2. Gasket Material: The choice of gasket material affects how well the manhole will seal.
Working pressure, working temperature and lading must be taken into consideration when
choosing a gasket. For example: braided packing may be ideal for viscous material and
high temperature applications, but it does not seal bubble tight. See Table 1 for additional
information.
3. Visual Inspection: It is important to visually inspect the manhole for potential problems
before each load. Recognizing and addressing issues before there is a problem will help to
reduce the probability of a costly accident.
3.1. Gasket Inspection: The gasket is crucial to ensuring the proper sealing of the
manway. Inspect the gasket prior to each load for nicks, wear, or cracks. A damaged
or worn gasket must be replaced. Use only genuine Betts Industries replacement
gaskets to ensure proper manhole sealing. Select gasket material to ensure
compatibility with product carried.
3.2. Sealing surface inspection: The gasket seals against the interior surface of the
gasket channel and the top edge of the collar. A smooth finish in both areas is
required for the gasket to seal. Nicks, gouges, or build-up on the seat may cause the
manhole to leak. A thin or eroded collar will not allow proper sealing of the manhole.

Form Title:
Document #:
INSTALLATION AND MAINTENANCE MANUAL
MM-MH001
(Form: DEF-006A-1)
Revision:
0
Document Title:
Date:
FULL OPENING MANHOLE
Jan. 14, 2022
Page:
4 of 6
Betts Industries Inc. ▪814·723·1250 ▪1800 Pennsylvania Ave. West ▪Warren, PA 16365 ▪www.BettsInd.com
Print Date: 1/14/2022 This form is considered uncontrolled 24 hrs. after print date.
A “knife edge” on the top of the collar will cut through the gaskets and cause failure.
Inspect the collar sealing edge for damage prior to each load.
3.3. Hold Down Inspection: The wing-nuts, swing-bolts, and hold down lugs must be in
good condition to ensure integrity of the manhole. Damaged or worn components
must be replaced. The threads of the swing-bolts must be clean. A light lubricant or
never-seize should be used on the threads to resist galling. For severer applications,
sealed wing-nut assemblies are available that offer an integral grease fitting. The
sealed wing-nut assemblies should be greased annually at a minimum.
3.4. Replacement swing-bolts for ASME units must be Betts ASME rated swing-bolts.
4. Closing Instructions:
4.1. Close the cover and verify the cover gasket is centered on the seat of the collar.
There should not be metal-to-metal contact.
4.2. Rotate the wing-nuts into position and snug them up by hand following a star pattern
tightening sequence as shown in Figure 1.
4.3. For some applications, hand-tightening the wing-nuts may be sufficient, but in
applications were sealing is critical, the wing-nuts should be tightened down to a
specific torque. A hammer should NOT be used to tighten the wing-nuts and the
wing-nuts should never be tightened to
more than 45 ft-lbs. See Table 1 for
examples of torque values. Two styles of
wing-nut tool are offered as shown in
figure 2. Part number 6469SL is a wing-
nut wrench with integral handle. Part
number 6443SS is a wing-nut socket
adapter which allows the use of a torque
6 Hold-
Down
1
2
3
6
5
4
8 Hold-
Down
1
2
3
6
5
4
8
7
Figure 1
Figure 2
6469SL
6443SL

Form Title:
Document #:
INSTALLATION AND MAINTENANCE MANUAL
MM-MH001
(Form: DEF-006A-1)
Revision:
0
Document Title:
Date:
FULL OPENING MANHOLE
Jan. 14, 2022
Page:
5 of 6
Betts Industries Inc. ▪814·723·1250 ▪1800 Pennsylvania Ave. West ▪Warren, PA 16365 ▪www.BettsInd.com
Print Date: 1/14/2022 This form is considered uncontrolled 24 hrs. after print date.
wrench to tighten the wing-nut to a precise torque (torque wrench is not included).
4.4. After tightening by hand, continue to follow the star pattern sequence and tighten
the wing-nuts to 50% of desired final torque.
4.5. Following the star pattern tightening sequence, tighten the wing-nuts to 75% of
desired final torque.
4.6. Next, tighten to 100% of desired final torque following the star pattern tightening
sequence shown in figure 1.
4.7. Final tightening pass should be a circular sequence at 100% torque.
4.8. Verify the manhole is sealing properly.
4.9. If the gasket is leaking, verify proper tightening sequence.
4.10. If gasket continues to leak, inspect all sealing surfaces including collar seat and
inside surface of gasket channel. Inspect collar to verify it is not distorted or out of
flatness. Repair or replace as needed. Inspect gasket and replace as needed.
5. Opening Instructions: All pressure must be relieved from tank prior to loosening wing-nuts.
Fall Hazard –Climbing on top of a cargo tank is dangerous
and should be avoided without proper safety equipment.
Falling can result in death or serious injury.
Pressure Hazard –Cargo tank may contain residual
pressure. Failure to safely relieve could result in sudden loss
of pressure causing death or serious injury.
5.1. Verify the manhole has a hinge pin securely installed at the hinge.
Table 1
Torque Applied to Wing-nuts on 20” Manhole *
Hand-tight
(Approx. 16 ft/lbs)
30 ft/lbs
45 ft/lbs
6 Wing-nuts
8 Wing-nuts
6 Wing-nuts
8 Wing-nuts
6 Wing-nuts
8 Wing-nuts
Homogeneous Gaskets:
Buna, Hypalon, Viton, EPDM
40 psig
50 psig
75 psig
75 psig
80 psig
160 psig
Synthetic Braided Fiber
Impregnated w/ PTFE
20-30 psig
30-40 psig
35-50 psig
40-65 psig
50-60 psig
70-80 psig
Teflon Encapsulated Gaskets **
20-35 psig
20-35 psig
40-65 psig
40-65 psig
50-75 psig
95-100 psig
* This table shows results that may be expected for a properly installed and maintained 20" ASME
manhole with a new gasket. Actual test results may vary depending on installation, condition and
service application of manhole.
** See Engineering Bulletin 3-99 for additional information on Teflon Encapsulated Gaskets.

Form Title:
Document #:
INSTALLATION AND MAINTENANCE MANUAL
MM-MH001
(Form: DEF-006A-1)
Revision:
0
Document Title:
Date:
FULL OPENING MANHOLE
Jan. 14, 2022
Page:
6 of 6
Betts Industries Inc. ▪814·723·1250 ▪1800 Pennsylvania Ave. West ▪Warren, PA 16365 ▪www.BettsInd.com
Print Date: 1/14/2022 This form is considered uncontrolled 24 hrs. after print date.
5.2. Never lean directly over the manhole or position self behind the hinge while opening
the manhole. Escaping air may blow up dust or debris from top of tank; safety
glasses are recommended.
5.3. Use caution if tank contains elevated
temperature product. Steam or hot vapors
escaping from the manhole could cause
burns.
5.4. A manhole cover stuck to the collar is very
dangerous and must be safely released by
following this procedure prior to fully
disengaging the wing-nuts.
5.5. The lugs of the cover have a keyway
opening which interlocks with the boss of the
wingnut. This feature prevents the cover
from opening fully if there is pressure
pushing up on the cover. A stuck cover may
mask this condition and must be addressed.
5.6. Loosen and disengage all wingnuts except
the two wing-nuts on each side of the handle.
See figure 3.
5.7. If air begins to escape at any time, stay clear
of the manhole until pressure is fully
released.
5.8. Loosen the two wing-nuts on each side of the
handle so they are roughly 3/8” off the lugs
but do not disengage them from the cover.
See figure 4. These two wing-nut assemblies
must remain in the upright position engaged
with the triangular cover hold-down lugs.
5.9. With the two wing-nuts on each
side of the handle still in position
but loosely engaged, pull up
firmly on the cover to ensure
cover is released from the collar.
The cover should lift off the seat
approximately ¼”, releasing any
residual pressure. See figure 5.
5.10. After all pressure is released,
disengage all swing-bolt/wing-nut
assemblies and fully lift cover.
Figure 3
Figure 4
Wingnut still loosely
engaged with keyway
of triangular lug.
Figure 5
•Pull cover up while
wingnuts are loose but
still engaged.
•Separate cover from collar
roughly ¼” to release any
residual pressure.
¼” Gap
Lift
These two wingnuts
loosened but still
engaged.