ANSI CSA AM Z21.15-2009 CSA 9.1-2009 Manually Operated Gas Valves For Appliances Appliance Connector Valves And Hose End Valves (Second Edition).pdf

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1、ANSI Z21.15-2009CSA 9.1-2009(reaffirmed 2014)American National Standard/CSA Standard for Manually Operated Gas Valves For Appliances, Appliance Connector Valves And Hose End ValvesStandards DeveloperAPPROVEDCSA AMERICA INC. 8501 East Pleasant Valley RoadCleveland, Ohio 44131CANADIAN STANDARDS ASSOCI

2、ATION5060 Spectrum Way, Suite 100Mississauga, Ontario, Canada L4W 5N6Published - July 2009Copyright 2009Canadian Standards AssociationPermission is granted to republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities

3、. Those desiring permission for other republication should consult Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.Copyright 2009CSA America, Inc.Permission is granted to republish material herein in laws or ordinances, and in regulations, administr

4、ative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.AMERICAN NATIONAL STANDARDANSI Z21.15-2009CSA STANDARDCSA 9.1-2009Second Edition - 2009This Stand

5、ard is based on the Standard forManually Operated Gas Valves for Appliances, Appliance Connector Valves and Hose End ValvesANSI Z21.15-1997 CGA 9.1-1997,Addenda ANSI Z21.15a-2001 CGA 9.1a-2001, andANSI Z21.15b-2006 CGA 9.1b-2006June 11, 2009American National Standards Institute, Inc.May 18, 2009Inte

6、rprovincial Gas Advisory Council Effective in Canada January 1, 2011IGACiiiThe previous editions of the Standard for Manually Operated Gas Valves For Appliances, Appliance Connector Valves And Hose End Valves, and addenda thereto, approved by the IGAC and ANSI are as follows:ANSI Z21.15-1997 CGA 9.1

7、-M97 ANSI Z21.15a-2001 CGA 9.1a-2001ANSI Z21.15b-2006 CGA 9.1b-2006The following identifies the designation and year of the harmonized standard:ANSI Z21.15-2009 CSA 9.1-2009ivInterprovincial Gas Advisory Council(March, 2009)S. Cooke Technical Standards b. Maximum and minimum ambient temperature;c. C

8、apacity;d. Low-setting throughput, if applicable; ande. Whether or not the valve has a non-displaceable member.1.3 Dimensions1.3.1For a plug-type valve finished by lapping:a. The body shall be bored out at the small end of the taper to a diameter of at least 0.003 in (0.076 mm) larger than the small

9、 diameter of the plug taper for a minimum distance of 0.047 in (1.19 mm). This does not apply to pilot shut-off and pilot adjustment values.b. The largest diameter of the plug taper shall be at least 0.003 in (0.76 mm) smaller than the large end of the body taper.1.3.2A valve or device threaded for

10、connection to piping shall have taper pipe threads conforming to the Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1.A valve or device threaded for connection to a manifold shall have either:a. Standard taper pipe threads as specified above; orb. A threaded connection in accorda

11、nce with Figure 1, Acceptable Dimensions For Special Threads And Working Gauges For Their Measurements.31.3.3Threads specified in 1.3.2 shall have a chamfer at the beginning of the thread and shall fit the respective gauges within 1 turn.1.3.4Threads shall have no shoulder within the distance given

12、in Table I, Minimum Distance From Inlet To Any Shoulder At End Of Thread, from the inlet end of the threaded portion including any chamfer.1.3.5When for connection to semi-rigid tubing, the connection together with the fittings used thereon shall be in accordance with or be interchangeable with the

13、fittings described in the Standard for Automotive Tube Fittings, ANSI/SAE J512, or the Standard for Hydraulic Tube Fittings, ANSI/SAE J514, as applicable.Appliance connector valves need not comply with this provision.1.3.6Hose end valves with nozzles, not intended for permanent connection to a hose,

14、 shall either comply with the dimensions given in Figure 2, Standard Hose-End Nozzle, or shall have a minimum effective length of 1 in (25.4 mm) with the peak of the corrugation nearest the valve member at least 13/16in (20.6 mm) from the outlet end. Nozzles which differ from Figure 2 shall comply w

15、ith 2.9, Gripping Properties Of Nozzles On Hose End Valves Not Intended For Permanent Connection.1.3.7For hose end valves with nozzles intended for permanent connection to a hose, the connection means shall comply with one or more of the following hose assembly standards, as appropriate: UL 569 Pigt

16、ails and Flexible Hose Connectors for LP-GasUL 21 LP-Gas HoseCSA 8.1 Elastomeric Composite Hose and Hose Couplings for Conducting Propane and Natural GasCSA 8.3 Thermoplastic Hose and Hose Couplings for Conducting Propane and Natural Gas1.4 Seating MeansValves shall be provided with a means, other t

17、han gravity, to maintain a continuous seating force to compensate for manufacturing tolerances, operational variations or displacement of lubricant(s) (see also 2.7, Adequacy Of Seating Means).1.5 Valve Stems And Handles1.5.1Stems of valves and devices provided with slots for operation by a screwdri

18、ver shall have such slots at least 1/32in (0.8 mm) wide, 3/64in (1.2 mm) deep, and 1/8in (3.2 mm) long.1.5.2Straight through valves with integral or permanently attached lever or “T” handles, which are actuated by rotation, shall have the plane of the handle at right angles to the direction of gas f

19、low when the valve is in the “off” position.41.5.3A separable handle, removable without further disassembly of the valve, shall be attached by tamper-resistant means unless removal of the handle does not affect the leak tightness of the valve or the retention of the valve member. (See Part IV, Defin

20、itions).1.6 Valve Stops And LatchesValves, except pilot adjustment valves, shall have stops to limit both extremes of movement of the valve member.1.6.1Valves, except pilot adjustment valves, shall have stops to limit both extremes of rotation.1.6.2Latching-type valves shall be positive in their act

21、ions, shall permit ready operation with one hand and shall necessitate not less than two actions to turn on.1.6.3A valve having an intermediate “off” position between two “on” positions shall be so constructed that it will become latched in the “off” position.1.6.4Latching type valves shall be capab

22、le of withstanding the following torques applied against the latching means without damage which could result in the unseating of the valve member.1.7 Appliance Connector Valves1.7.1Appliance connector valves shall have inlet and outlet connections in accordance with Table II, Inlet And Outlet Conne

23、ctions Of Appliance Connector Valves, and shall have a capacity in accordance with that shown in Table VIII, Minimum Capacities For Appliance Connector Valves.1.7.2An appliance connector valve shall have a non-displaceable valve member (see Part IV, Definitions, and Figure 3, Applinace Connector Val

24、ve With Non-Displacable Valve Member). If the small end of the plug is exposed, it shall be recessed in the body a minimum of 1/16in (1.6 mm).Torque,Inch-Pounds (N m)Valves of pipe sizes less than 3/8in (9.53 mm), and valves having unthreaded inlets 50 (5.65)Valves of pipe sizes 3/8in (9.53 mm) and

25、larger having threaded inlets 100 (11.30)51.8 Strength1.8.1Bending Moment.A valve shall be capable of operation without cracking, breaking, or leaking while being subjected to a bending moment using the weight specified in Table III, Load For Bending Moment Test, in accordance with the following Met

26、hod of Test.This test shall not apply to valves which have outlets threaded for orifice fittings.Method of TestThis test shall be conducted at room temperature. A new sample shall be subjected to the specified test.a. The inlet and outlet connections of the valve shall be assembled leak tight to the

27、 appropriate fittings as described below. The length of the inlet fitting shall be such that, after assembly, the dimension from the valve inlet to the end of the inlet fitting will be 13 in (330 mm) 1/2in (12.7 mm). The tightening torque for threaded pipe or tubing connections shall be one-half tha

28、t shown in Table IV, Torques For Turning Effort Test.1. Pipe threaded connections shall be assembled to Schedule 40 iron pipe, or pipe fitting, using non-Teflon type joint compound.2. Tubing connections shall be assembled to steel tubing which conforms to the Standard for Welded and Cold Drawn Low C

29、arbon Steel Tubing Annealed for Bending and Flaring, ANSI/SAE J525, and has a minimum wall thickness of 0.028 in (0.71 mm), using the attachment means specified by the manufacturer.3. Connections designed for other than threaded pipe or tubing shall be assembled to test fixture(s) representative of

30、the intended connection means.b. The valve outlet fitting shall be rigidly supported 1 in (25.4 mm) from the valve outlet, unless the following exceptions apply. When the valve has an integral mounting means independent of the inlet and outlet connections, the valve shall be mounted using the integr

31、al mounting means as specified by the manufacturer. When the valve is intended to be mounted by either the integral mounting means or the valve outlet, the mounting means which produces the most severe test condition shall be used.The valve inlet shall be in the horizontal position.c. A flow-measuri

32、ng device, capable of accurately indicating the allowable leakage rate, shall be connected to the valve inlet fitting. A system, capable of supplying air or gas at the test pressures specified, shall be connected to the inlet of the flow-measuring device. The valve assembly shall then be tested for

33、leakage as specified in 2.2, Leakage, and shall comply.d. With the valve in the closed position, the system shall be pressurized at 21 in wc (5.23 kPa) and the appropriate weight as specified in Table III, Load For Bending Moment Test, shall then be suspended on the inlet fitting, without shock, 12

34、in (305 mm) from the inlet of the valve for 15 minutes. Without removing the weight, the valve shall then be tested for leakage as specified in 2.2, Leakage, except at a maximum pressure of 21 in wc (5.23 kPa).6e. The test in “-d” shall be repeated 3 times with the valve being rotated 90 degrees (1.

35、57 rad) around the horizontal inlet axis between each test. If the application of any bending moment is in a direction that would tend to rotate the valve with respect to the outlet, that bending moment need not be applied. Between tests, the valve shall be cycled on and off 3 times with the weight

36、removed.At the completion of the above tests, the valve shall be removed and examined for deformation and breakage and then subjected to the leakage test as specified in 2.2.1.8.2Turning Effort.A valve or device shall be capable of withstanding, without deformation, breakage or leakage, stresses res

37、ulting from installation of the valve or device.Method of TestThese tests shall be conducted at room temperature. A new sample shall be used for each test.a. A valve with both the inlet and outlet threaded for connection to iron pipe with standard taper pipe threads shall be subjected to the followi

38、ng test.1. A length of new, clean and properly threaded Schedule 40 iron pipe or pipe fitting, as applicable, whose threads have not been lubricated, shall be threaded to the inlet of the closed test valve with the turning effort specified in Table IV, Torques For Turning Effort Test, by gripping th

39、e wrench flats on the valve or any suitable area of the valve if wrench flats are not provided. If wrench flats are provided on both ends of the valve, the inlet end wrench flats shall be used. If wrench flats are not provided, a special tool provided by the valve manufacturer may be used for this t

40、est. With the valve in the closed position, the turning effort shall be applied for 15 minutes and then released.2. The procedure outlined in “-a1” shall be repeated for the outlet of the valve using the outlet wrench flats, if provided.3. The valve, with the inlet and outlet pipes in place, shall b

41、e tested for leakage as specified in 2.2, Leakage, and shall comply. (NOTE: Any leakage due to dry threads shall be disregarded). The inlet and outlet pipes shall then be removed and the valve examined for deformation and breakage.b. A valve with both the inlet and outlet designed for connection to

42、tubing shall be subjected to the following test.1. A length of the proper size of aluminum tubing with the end squared and deburred shall be assembled to the inlet end of the closed test valve with the turning effort specified in Table IV, Torques For Turning Effort Test, using the attachment means

43、specified by the manufacturer.When applying the turning effort, the valve shall be rigidly supported by the wrench flats, or any suitable area on the valve if wrench flats are not provided. If wrench flats are provided on both ends of the valve, the inlet end wrench flats shall be used. With the val

44、ve in the closed position, the turning effort shall be applied to the tubing fitting for 15 minutes and then released.2. The procedure outlined in “-b1” shall be repeated for the outlet of the valve using the outlet wrench flats, if provided.73. The valve, with the inlet and outlet tubing in place,

45、shall be tested for leakage as specified in 2.2, Leakage, and shall comply. The inlet and outlet tubing shall then be removed and the valve examined for deformation and breakage.c. For a valve having only one threaded connection for iron pipe, the pipe thread end shall be tested as in “-a” above, as

46、 appropriate.d. For a valve having only one tubing connection, the tubing connection shall be tested as in -b above, as appropriate.e. A hose-end valve with nozzle terminating in standard pipe thread shall withstand, without deformation, breakage or leakage, a turning effort of 135 in/lb (15.3 N m)

47、applied through the valve body when subjected to the following test.The inlet end of a completely assembled hose-end valve shall be attached to a rigidly supported pipe so that it will be in a position similar to that prevailing in service. The turning effort specified above shall be applied to an e

48、xtra heavy-duty pipe fitting on the hose-end outlet of the valve so that it acts to turn the valve onto the inlet pipe. After this turning effort has been applied for 15 minutes and then released, the valve shall be subjected to the leakage test specified in 2.2, Leakage. The valve shall then be rem

49、oved and examined for deformation and breakage.1.8.3Impact.This test applies only to individual manual valves not incorporated in devices that include other means to control main burner gas.a. All valves, except those listed in 1.8.3-b, shall be capable of withstanding the applicable impact specified in Table V, Impact, Foot Pounds (J), without cracking or breaking.Method of TestThis test shall be conducted at room temperature.A new sample shall be subjected to the specified test.A valve whose inlet is designed for connection to threaded pipe shall be supported by securing its