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172-65391MA-08 (VS1A) 7 Oct 2021

Table of Tightening Torques

Part Name

Torque

Distance Across Flats



(lbf



ft)

(in)

Cover Bolt

(33)

(

)

Valve Seat

(11)

(

)

Screw (for guide plate)

0.3

(0.22)

NOTE: - Coat all threaded portions with anti-seize.

(1 N





10 kg



cm)

If drawings or other special documentation were supplied for the product, any torque

given there takes precedence over values shown here.

Exploded View

Body

Float

Cover Gasket

Cover

Cover Bolt

Cover

Valve Seat
Gasket

Valve
Seat

Connector

Содержание VS1A

Страница 2: ... the instructions to be sure of using the product properly The rapid initial air vent operates by rapidly discharging the initial air when supplying water to piping then closing upon completion of discharge During operation once it has closed the air vent remains closed as long as there is internal pressure When draining piping the rapid initial air vent automatically opens to introduce air and re...

Страница 3: ...ath or serious injury Indicates that there is a potential threat of death or serious injury Indicates that there is a possibility of injury or equipment product damage DO NOT use for toxic flammable or otherwise hazardous fluids This product is an air vent that discharges air from water piping system Use only for water and or air This product is for intended use only Improper use may result in suc...

Страница 4: ...d components when repairing the product and NEVER attempt to modify the product in any way Failure to observe these precautions may result in damage to the product and burns or other injury due to malfunction or the discharge of fluids Use only under conditions in which no freeze up will occur Freezing may damage the product leading to fluid discharge which may cause burns or other injury Use only...

Страница 5: ...d into the air vent by the pressure of the flow The float inside the air vent is in the lower position thus the valve is fully open and allows the air that enters the air vent and fills the area around the float to then be discharged 2 When discharge is completed as water flows into the air vent the rising water level causes the float to rise and to close the valve If there is a rapid rise in wate...

Страница 6: ...in which no freeze up will occur Freezing may damage the product leading to fluid discharge which may cause burns or other injury CAUTION Refer to the product nameplate for detailed specifications Maximum allowable pressure PMA and maximum allowable temperature TMA are PRESSURE SHELL DESIGN CONDITIONS NOT OPERATING CONDITIONS Valve No is displayed for products with options This item is omitted fro...

Страница 7: ...front to back Figure 2 4 Install the product in a location where air is likely to collect such as a bend in the piping 5 Install the product so that the outlet pipe reaches a drainage vessel or ditch Make sure the end of the pipe is above the waterline so that dirt and water can not be sucked up by vacuum when the system shuts down Figure 1 6 Inlet piping with no horizontal portion is recommended ...

Страница 8: ...ter flow Normal Air is discharged as it accumulates with the air vent closing with no leakage when no air is present in the piping Blocked Discharge Impossible No air is discharged though air accumulates in the air vent NOTE Once the air vent closes it will remain closed until internal pressure drops to near or below atmospheric pressure This condition may be confused with a malfunction blocked If...

Страница 9: ...ly During Reassembly Cover Bolt Remove with a socket wrench Consult the table of tightening torques and tighten to the proper torque Cover Remove carefully take care to prevent any damage to the float which may fall out when the cover is removed Make sure the sealing surfaces are clean then reattach be careful not to bend the float guides Float Remove being careful not to scratch the polished surf...

Страница 10: ...e Seat 15 11 13 1 2 Screw for guide plate 0 3 0 22 NOTE Coat all threaded portions with anti seize 1 N m 10 kg cm If drawings or other special documentation were supplied for the product any torque given there takes precedence over values shown here Exploded View Body Float Cover Gasket Cover Cover Bolt Cover Valve Seat Gasket Valve Seat Connector ...

Страница 11: ...ing Inner diameter should be at least 16 mm 5 8 in The valve seat is clogged Clean the valve seat The inlet or outlet piping is clogged Clean the piping and any upstream strainer Water leaks when valve is closed Build up on the surface of the valve seat or the valve seat is damaged Clean or replace with a new valve seat The float is dirty or coated with a film or is deformed Clean or replace with ...

Страница 12: ...yond the control of TLV TII or TLV group companies or 6 improper storage maintenance or repair or 7 operation of the Products not in accordance with instructions issued with the Products or with accepted industry practices or 8 use for a purpose or in a manner for which the Products were not intended or 9 use of the Products in a manner inconsistent with the Specifications or 10 use of the Product...

Страница 13: ...ASSEMBLY AND SHIPMENT OF THE DEFECTIVE PRODUCT INJURY TO OTHER PROPERTY DAMAGE TO BUYER S OR THE FIRST END USER S PRODUCT DAMAGE TO BUYER S OR THE FIRST END USER S PROCESSES LOSS OF USE OR OTHER COMMERCIAL LOSSES WHERE DUE TO OPERATION OF LAW CONSEQUENTIAL AND INCIDENTAL DAMAGES UNDER THIS WARRANTY UNDER ANY OTHER EXPRESS WARRANTY NOT NEGATED HEREBY OR UNDER ANY IMPLIED WARRANTY NOT NEGATED HEREBY...

Страница 14: ...d Nunawading Victoria 3131 Australia Tel Fax 61 0 3 9873 5610 61 0 3 9873 5010 In East Asia 36 Kaki Bukit Place 02 01 02 Singapore 416214 Tel Fax 65 6747 4600 65 6742 0345 Room 5406 No 103 Cao Bao Road Shanghai China 200233 Tel Fax 86 0 21 6482 8622 86 0 21 6482 8623 No 16 Jalan MJ14 Taman Industri Meranti Jaya 47120 Puchong Selangor Malaysia Tel Fax 60 3 8065 2928 60 3 8065 2923 252 94 K L 17th F...

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