Ato Drain Valve RoHS Longer life & Higher resistance to foreign matter Improved foreign matter resistance Catching of foreign matter is redced with no sliding part. Diaphragm type Poppet type Shape prevents condensate accmlation. Condensate and foreign matter are discharged completely. Increase in condensate discharge Redction of operation freqency de to increased condensate discharge Drain discharge: Max.100 cm 3 /cycle (3 times compared with the crrent model) Doble layer design Better visibility & environmental resistance The bowl is covered with a transparent bowl gard. With manal discharge mechanism N.O.: Black N.C.: Gray AD402-A Series CAT.ES40-65A
Ato Drain Valve AD402-A Series Lightweight Resin bowl gard has redced the weight by 22% Weight 460 g AD402-A Crrent model Weight 590 g Redced reqired maintenance space Only 30 mm of space is reqired nderneath for maintenance, allowing more compact installation. With bowl is monted With bowl is removed Monting example Aftercooler Air tank Air dryer Compressor 30 mm Easier maintenance One-toch monting and removal of the bowl is possible withot sing a tool. Release the lock by sliding the lock btton down while holding the body. Then, rotate the bowl gard and pll down for removal. 1
Ato Drain Valve AD402-A Series Transparent bowl gard Better environmental resistance: Transparent bowl gard can protect the inner bowl! Windows on the bowl gard have been removed and the inner bowl is instead covered with a polycarbonate transparent bowl gard. Now, even if the environment changes and the bowl is exposed to corrosive chemical or oil splash, the foreign matter will not stick directly to the pressrized bowl. This can redce risk of bowl breakage. AD402-A Crrent model Doble layer design Pressre Pressre Cracks may occr in a portion where the internal pressre is applied. Transparent Inner bowl bowl gard Material: Polycarbonate Material: Polycarbonate Bowl gard Inner bowl Better visibility: 360 Use of transparent bowl gard makes it possible to check the condensate inside the bowl from the entire periphery. AD402-A Crrent model Drain Amont of condensate can be monitored from any direction. Amont of condensate can be monitored from the slit. Options Bowl material can be selected according to the operating environments. Bleed valve eqipped type can be selected. Polycarbonate (Standard) Nylon (Option) Metal (Option) Bleed valve When condensate is not dropping down into the drain bowl, open the bleed valve. 2
Ato Drain Valve AD402-A Series Specifications Symbol 1 L Standard Specifications Model Ato drain type Ato drain valve type Flid Ambient and flid temperatres Proof pressre Max. operating pressre Operating pressre range *1 AD402-A Float type N.C. (Normally closed: Drain port is closed when pressre is not applied) N.O. (Normally open: Drain port is open when pressre is not applied) Compressed air 5 to 60 C (No freezing) 1.5 MPa 1.0 MPa N.C.: 0.15 to 1.0 MPa N.O.: 0.1 to 1.0 MPa Port size 1/4, 3/8, 1/2 Drain port size 3/8 Bowl material Bowl gard material Weight Appearance color Polycarbonate Polycarbonate 0.46 kg White *1 For the N.O. (Normally open) type, the discharged flow rate of the air compressor shold be 400 L/min (ANR) or more. How to Order AD402 04 D A Semi-standard symbol: When plral options are reqired, indicate them in alphanmeric order. Example) AD402-N04D-2VZ-A A 3 Symbol C *1 D *2 Symbol Nil F N Thread type Type Port size Symbol Port size 02 1/4 03 3/8 04 1/2 Description Ato drain type N.C. (Normally closed) Drain port is closed when pressre is not applied. N.O. (Normally open) Drain port is open when pressre is not applied. *1 When pressre is not applied, condensate which does not start the ato drain mechanism will be left in the bowl. Releasing the residal condensate before ending operations for the day is recommended. *2 If the compressor is smaller than 3.7 kw, or discharge flow is less than 400 L/min (ANR), air leakage from the drain cock may occr dring start of operations. N.C. type is recommended. Proper se of float type ato drain See P.6 Rc G NPT Semi-standard specifications Semi-standard *3 Bowl Valve Pressre nit Symbol Description Nil Polycarbonate bowl 2 Metal bowl 6 Nylon bowl Nil None *4 V With bleed valve Nil Z *5 Name plate and cation plate for bowl in SI nits Name plate and cation plate for bowl in imperial nits *3 Chemical resistance of the bowl See P.7 *4 For port size 1/4, the valve already monted. *5 Only NPT can be selected. This prodct is for overseas se only according to the New Measrement Act. (The SI nit type is provided for se in Japan.)
Ato Drain Valve AD402-A Series Constrction/Dimensions ø82 Width across flats 30 IN Port size 1/4, 3/8, 1/2 q e w r 184.4 t y N.O.: Black N.C.: Gray Drain discharge Drain 27 Port size 3/8 Width across flats Clearance for maintenance 30 Component Parts No. Description Material Color 1 Body Alminm die-cast White 5 Diaphragm FKM 6 Main valve FKM Port size 3/8 and 1/2 Port size 1/4, Port size 3/8, 1/2 with V option 26 Bleed valve Replacement Parts No. Description Material Part no. 2 Element Nylon AD402P-040S 3 Bowl O-ring NBR KA00463 4 Bowl assembly *1 See below. See below. Bowl Assembly Part Nos. Bowl material Bowl assembly part nos. Normally open Normally closed Polycarbonate AD52-A AD51-A Nylon AD52-6-A AD51-6-A Metal AD52-2-A AD51-2-A *1 Enter the piping thread type to m of the bowl assembly part nmber. Nil: Rc thread, N: NPT thread, F: G thread Please conslt with SMC separately for psi and F nit display specifications. Inclding the bowl O-ring. 4
AD402-A Series Working Principle: Float Type Ato Drain N.O. (Normally open) N.C. (Normally closed) q Bowl r Valve e Lever t Valve seat w Float i Tbe y Spring Diaphragm o Chamber!0 Main valve!1 Drain cock Drain Drain When pressre inside the bowl is released: When pressre is released from the bowl q, the diaphragm is lowered by the spring y. The seal at the main valve!0 is interrpted, and the otside air flows inside the bowl q throgh the chamber o and the drain cock!1. Therefore, if there is an accmlation of condensate in the bowl q, it will drain ot throgh the drain cock. When pressre is applied inside the bowl: When pressre inside the bowl is 0.1 MPa or higher, the force of the diaphragm srpasses the force of the spring y, and the diaphragm goes p. This pshes the main valve!0 p so that it creates a seal, and the inside of the bowl q is sht off from the otside air. If there is no accmlation of condensate in the bowl q at this time, the float w will be plled down by its own weight, casing the valve r, which is connected to the lever e, to seal the valve seat t. When there is an accmlation of condensate in the bowl: The float w rises de to its own boyancy and the seal at the valve seat t is interrpted. This allows the pressre inside the bowl q to enter the tbe i. The reslt is that the combined pressre inside the tbe i and the force of the spring y lowers the diaphragm. This cases the seal at the main valve!0 to be interrpted, and the accmlated condensate in the bowl q drains ot throgh the drain cock!1. Trning the drain cock!1 manally conterclockwise rises the drain cock!1, which pshes open the seal created by the main valve!0, ths allowing the condensate to drain ot. When pressre inside the bowl is released: Even when pressre inside the bowl q is released, the spring y keeps the diaphragm in its pward position. This keeps the seal created by the main valve!0 in place; ths, the inside of the bowl q is sht off from the otside air. Therefore, even if there is an accmlation of condensate in the bowl q, it will not drain ot. When pressre is applied inside the bowl: Even when pressre is applied inside the bowl q, the combined force of the spring y and the pressre inside the bowl q keeps the diaphragm in its pward position. This maintains the seal created by the main valve!0 in place; ths, the inside of the bowl q is sht off from the otside air. If there is no accmlation of condensate in the bowl q at this time, the float w will be plled down by its own weight, casing the valve r, which is connected to the lever e, to seal the valve seat t. When there is an accmlation of condensate in the bowl: The float w rises de to its own boyancy and the seal at the valve seat t is interrpted. This allows the pressre inside the bowl q to enter the tbe i. The reslt is that the pressre inside the tbe i srpasses the force of the spring y and pshes the diaphragm downward. This cases the seal at the main valve!0 to be interrpted and the accmlated condensate in the bowl q drains ot throgh the drain cock!1. Trning the drain cock!1 manally conterclockwise rises the drain cock!1, which pshes open the seal created by the main valve!0, ths allowing the condensate to drain ot. 5
Ato Drain Valve AD402-A Series Operating State and Proper Use of Float Type Ato Drain Ato drain When pressre is not applied (After exhasting residal pressre) Before drain accmlates When pressre is applied When drain accmlates Minimm operating pressre Drain discharged (Open) Drain not discharged (Close) Drain discharged (Open) Float N.O. (Normally open) Diaphragm 0.1 MPa or more Orifice Drain not discharged (Close) N.C. (Normally closed) 0.15 MPa or more Orifice * For both N.O. and N.C., the drain can be discharged manally by trning the drain cock to the O position. Drain cock Open O S Close Proper se Compressor When pressre is not applied (After exhasting residal pressre) Cold climates Recommended ato drain 3.7 kw or more Drain not accmlated Do not want to accmlate drain generated at the inlet side when pressre is not applied. Want to prevent trobles cased by freezing. N.O. *1 (Normally open) Less than 3.7 kw Drain accmlated N.C. (Normally closed) *1 For N.O. type, the drain discharge passage is open when pressre is not applied. For this reason, the drain exhast port is not closed completely in a compressor with a small spply amont (less than 3.7 kw) and the air will ceaselessly blow ot. 6
AD402-A Series Specific Prodct Precations 1 Be sre to read this before handling the prodcts. Refer to the back cover for safety instrctions. For air preparation eqipment precations, refer to the Handling Precations for SMC Prodcts and the Operation Manal on the SMC website: http://www.smcworld.com 1. The standard bowl for the ato drain valve is made of polycarbonate. Do not se in an environment where they are exposed to or come in contact with synthetic oil, organic solvents, chemicals, ctting oil, alkali, and thread lock soltions. Effects of atmosphere of organic solvents and chemicals, and where these elements are likely to adhere to the eqipment. Chemical data for sbstances casing degradation (Reference) Acid Alkaline Type Chemical name Application examples Inorganic salts Chlorine solvents Aromatic series Ketone Alcohol Oil Ester Ether Hydrochloric acid Slfric acid, Phosphoric acid Chromic acid Sodim hydroxide (Castic soda) Potash Calcim hydroxide (Slack lime) Ammonia water Carbonate of soda Sodim slfide Potassim nitrate Slfate of soda Carbon tetrachloride Chloroform Ethylene chloride Methylene chloride Benzene Tolene Paint thinner Acetone Methyl ethyl ketone Cyclohexane Ethyl alcohol IPA Methyl alcohol Gasoline Kerosene Dimethyl phthalate Diethyl phthalate Acetic acid Methyl ether Ethyl ether Acid washing liqid for metals Degreasing of metals Indstrial salts Water-solble ctting oil Polycarbonate Material Nylon Cleansing liqid for metals Printing ink Diltion Coatings Dry cleaning Photographic film Dry cleaning Textile indstries Anti-freeze Adhesives Synthetic oil Anti-rst additives Brake oil additives Amino Methyl amino Ctting oil Brake oil additives Rbber accelerant Others Thread-lock flid Seawater Leak tester : Essentially safe : Some effects may occr. : Effects will occr. When the above factors are present, or there is some dobt, se a metal bowl for safety. 7 Design 2. Keep the compressed air and the ambient temperatre of the location where this prodct is installed within the range of 5 to 60 C. Exceeding this range cold lead to a failre or malfnction. 3. Avoid sing this prodct in an area where corrosive gases, flammable gases or organic solvents are contained in the compressed air or in the srronding air. Cation Selection 1. Operate nder the following conditions to avoid malfnction. < N.O. type > Operating pressre: 0.1 MPa or more Operate the compressor at 3.7 kw (400 L/min (ANR)) or more. Air may ceaselessly blow ot of the drain discharge area when a compressor with a small air discharge volme is sed since the valve does not close nless the air pressre is 0.1 MPa or higher. < N.C. type > Operating pressre: 0.15 MPa or more 2. Operation failre will occr if a large amont of condensate rshes into the valve. Do not se the ato drain valve in sch environment. Piping 1. Hold the female thread side and tighten to the recommended torqe when screwing in the piping material. Insfficient tightening torqe may case loosening or defective sealing. Excessive tightening torqe may damage the thread, etc. If it is tightened withot holding the female thread side, excessive force will be directly applied to the internal parts, reslting in a prodct failre. Recommended Torqe Unit: N m Connection thread 1/4 3/8 1/2 Torqe 12 to 14 22 to 24 28 to 30 2. Preparation before piping Before piping is connected, it shold be thoroghly blown ot with air (flshing) or washed to remove chips, ctting oil, and other debris from inside the pipe. 3. Winding of sealant tape When screwing piping or fittings into ports, ensre that chips from the pipe threads or sealing material do not enter the piping. Also, if sealant tape is sed, leave 1.5 to 2 thread ridges exposed at the end of the threads. 4. For drain piping, se piping whose I.D. is ø10 mm or larger, and whose length is 5 m or less. Avoid riser piping.
AD402-A Series Specific Prodct Precations 2 Be sre to read this before handling the prodcts. Refer to the back cover for safety instrctions. For air preparation eqipment precations, refer to the Handling Precations for SMC Prodcts and the Operation Manal on the SMC website: http://www.smcworld.com Monting Cation 1. Abot the monting orientation of the prodcts Be sre to install the prodct with ot port down in a vertical position. If it is installed diagonally, laterally, or pside down, the drain may splash to the otlet side. 2. Install with at least 30 mm of free space below the prodct to allow for maintenance. 3. To place this prodct near the air compressor, install in sch a way that the vibrations will not be transmitted. 4. When installing the bowl, install it so that the lock btton lines p to the groove of the front (or the back) of the body. Failre to do so may case the bowl to fall off or break. Lock btton Maintenance 1. Perform maintenance inspection according to the procedres indicated in the operation manal. If handled improperly, the malfnction or damage of machinery and eqipment may occr. 2. Perform periodical inspections to detect any cracks, scratches, or other deterioration of the resin bowl. Replace with a new bowl or metal bowl when any kind of deterioration is fond. Otherwise, damage may occr. Investigate and/or review the operating conditions if necessary. 3. And if removing the dirt by washing the resin bowl, never se washing materials other than a netral detergent. Failre to do so may case damage to the bowl. Cation 1. Manal operation A manal knob attached to the ato drain end is tightened to the S side in normal operation. The drain can be discharged by loosening it to the O side. (Be carefl, however, if pressre remains inside the bowl when the drain is discharged, the drain will blow ot from the drain port.) Cation Air Spply 1. The prodct is not applicable to gases other than compressed air. The prodct is not applicable to gases other than compressed air (example: oxygen, hydrogen, flammable gas, mixed gas). 2. Do not se compressed air that contains chemicals, organic solvents, salt, or corrosive gases. Do not se compressed gas containing chemicals, organic solvents, salt or corrosive gas. This can case rst, damage to rbber and resin parts, or malfnction. 3. Operate within the specified operating pressre range. Damage, failre, or malfnction may occr if the prodct is operated above the maximm operating pressre. Open O S Close Drain cock 2. When discharging condensate manally, do not apply excessive torqe to the drain cock by sing a tool. Failre to do so may case damage to the prodct. 3. When removing the bowl, if the bowl does not rotate smoothly, slide the bowl pward and then rotate it. Slide the bowl pward. Operating Environment 1. Do not se in explosive atmospheres. 2. Do not se in locations sbject to vibration or impact. 3. A protective cover shold be sed to shield the prodct from direct snlight. 4. Remove any sorces of excessive heat. Bowl Rotate the bowl. 8 B
Safety Instrctions Cation: : Danger : Cation indicates a hazard with a low level of risk which, if not avoided, cold reslt in minor or moderate injry. indicates a hazard with a medim level of risk which, if not avoided, cold reslt in death or serios injry. Danger indicates a hazard with a high level of risk which, if not avoided, will reslt in death or serios injry. These safety instrctions are intended to prevent hazardos sitations and/or eqipment damage. These instrctions indicate the level of potential hazard with the labels of Cation, or Danger. They are all important notes for safety and mst be followed in addition to International Standards (ISO/IEC) 1), and other safety reglations. 1) ISO 4414: Pnematic flid power General rles relating to systems. ISO 4413: Hydralic flid power General rles relating to systems. IEC 60204-1: Safety of machinery Electrical eqipment of machines. (Part 1: General reqirements) ISO 10218-1: Maniplating indstrial robots Safety. etc. 1. The compatibility of the prodct is the responsibility of the person who designs the eqipment or decides its specifications. Since the prodct specified here is sed nder varios operating conditions, its compatibility with specific eqipment mst be decided by the person who designs the eqipment or decides its specifications based on necessary analysis and test reslts. The expected performance and safety assrance of the eqipment will be the responsibility of the person who has determined its compatibility with the prodct. This person shold also continosly review all specifications of the prodct referring to its latest catalog information, with a view to giving de consideration to any possibility of eqipment failre when configring the eqipment. 2. Only personnel with appropriate training shold operate machinery and eqipment. The prodct specified here may become nsafe if handled incorrectly. The assembly, operation and maintenance of machines or eqipment inclding or prodcts mst be performed by an operator who is appropriately trained and experienced. 3. Do not service or attempt to remove prodct and machinery/ eqipment ntil safety is confirmed. 1. The inspection and maintenance of machinery/eqipment shold only be performed after measres to prevent falling or rnaway of the driven objects have been confirmed. 2. When the prodct is to be removed, confirm that the safety measres as mentioned above are implemented and the power from any appropriate sorce is ct, and read and nderstand the specific prodct precations of all relevant prodcts careflly. 3. Before machinery/eqipment is restarted, take measres to prevent nexpected operation and malfnction. 4. Contact SMC beforehand and take special consideration of safety measres if the prodct is to be sed in any of the following conditions. 1. Conditions and environments otside of the given specifications, or se otdoors or in a place exposed to direct snlight. 2. Installation on eqipment in conjnction with atomic energy, railways, air navigation, space, shipping, vehicles, military, medical treatment, combstion and recreation, or eqipment in contact with food and beverages, emergency stop circits, cltch and brake circits in press applications, safety eqipment or other applications nsitable for the standard specifications described in the prodct catalog. 3. An application which cold have negative effects on people, property, or animals reqiring special safety analysis. 4. Use in an interlock circit, which reqires the provision of doble interlock for possible failre by sing a mechanical protective fnction, and periodical checks to confirm proper operation. Compliance Reqirements Cation 1. The prodct is provided for se in manfactring indstries. The prodct herein described is basically provided for peacefl se in manfactring indstries. If considering sing the prodct in other indstries, conslt SMC beforehand and exchange specifications or a contract if necessary. If anything is nclear, contact yor nearest sales branch. Limited warranty and Disclaimer/ Compliance Reqirements The prodct sed is sbject to the following Limited warranty and Disclaimer and Compliance Reqirements. Read and accept them before sing the prodct. Limited warranty and Disclaimer 1. The warranty period of the prodct is 1 year in service or 1.5 years after the prodct is delivered, whichever is first. 2) Also, the prodct may have specified drability, rnning distance or replacement parts. Please conslt yor nearest sales branch. 2. For any failre or damage reported within the warranty period which is clearly or responsibility, a replacement prodct or necessary parts will be provided. This limited warranty applies only to or prodct independently, and not to any other damage incrred de to the failre of the prodct. 3. Prior to sing SMC prodcts, please read and nderstand the warranty terms and disclaimers noted in the specified catalog for the particlar prodcts. 2) Vacm pads are exclded from this 1 year warranty. A vacm pad is a consmable part, so it is warranted for a year after it is delivered. Also, even within the warranty period, the wear of a prodct de to the se of the vacm pad or failre de to the deterioration of rbber material are not covered by the limited warranty. 1. The se of SMC prodcts with prodction eqipment for the manfactre of weapons of mass destrction (WMD) or any other weapon is strictly prohibited. 2. The exports of SMC prodcts or technology from one contry to another are governed by the relevant secrity laws and reglations of the contries involved in the transaction. Prior to the shipment of a SMC prodct to another contry, assre that all local rles governing that export are known and followed. Cation SMC prodcts are not intended for se as instrments for legal metrology. Measrement instrments that SMC manfactres or sells have not been qalified by type approval tests relevant to the metrology (measrement) laws of each contry. Therefore, SMC prodcts cannot be sed for bsiness or certification ordained by the metrology (measrement) laws of each contry. Safety Instrctions Be sre to read the Handling Precations for SMC Prodcts (M-E03-3) and Operation Manal before se.