2015年电大《个人与团队管理》机考必备考试小抄【精心整理,100%考试过】

iiE -'%: GYJ17.1057X(�±t: Obere Wank 1, 87484 Nesselwang, Germany)� � jE!Jlt3t:�$ (�$h.��)� -'% � � TMT121/127/128 -*�tllJf.i 11 *� � Ex nA II C T4-T6 Ge00 *$ UQ -'% 141000000GB 3836.1-2010, GB 3836.8-2014� ftVi � llt iiE 0* iiE � fi $& Wh 2017 � 2 .Fl 22 f3 � 2022 � 2 .Fl 21 B� 51 1. ��f�m 51��I»im*iiE� 1l11i!fo2. iiE�t.Ifij-%J§g� "x" �a,ijf"�1t���1�m���i!f, r*.J�m*iiE�1l11i!fo3. m-%m�iJta,ijm*iiE�1l11i!fo4. It ����J&m*iiE�1l11i!fo5. *iiE�li5'Jlt1�mT.'�l�wr�wr;li�,}tf)(.* (�#I) ��lH}i'iJ (�±t: �#lI�Il!I!R�!l!Ia:p�465-%) �f"l't.Jli5'Jm-%f"�o:tt!!.il: : ..t. jfiHP' m 3i: R& 103�JIlß!.IiQ: 200233 1XX.I!.il:: www.nepsLo r Emai l:****************��: +8621 643681801{,Ji: +8621 64844580EXPLOSION PROTECTIONCERTIFICATE OF CONFORMITYCert NO.GY J17.1057XThis is to certify that the productTemperatllre transmitter (DIN raH)manufactured by Endress + Hauser Wetzer GmbH + Co. KG(Address:Obere Wank 1,87484 Nesselwang, Gerrnany)which model is TMT1211127/128 SeriesEx marking Ex nAlIC T4�T6 Geproduct standard /drawing number 14 1000000has been inspected and certified by NEPSI, end that it conformsto GB 3836.1-2010,GB 3836.8-2014This Approval shall remain in force until 2022.02.21Remarks I.Conditions for safe use are specified in the attachment(s) to this certificate.2.Symbol "X" placed after the certification number denotes specific conditions of use,which are specified in the attachment(s) to this certificate.3.Model designation is specified in the attachment(s) to this certificate.4.Safe parameters specified in the attachment(s) to this certificate.5.This certificate is also applicable for the product with the same type manufactured byEndress+Hauser Wetzer (Suzhou) Co., Ltd. (address: Su Hong Zhong Lu No.465,S u z hou-S I P, China)DirectorThis Certificate is valid for products com patible with the d ocuments and sam p ies alJproved by NEPSI.103 Cao Bao Road Shanghai 200233, China Email:**************.cnTel: +862164368180Fax: +8621 64844580Editlon05�*�tt�tt��.*�����M National Supervision and Inspection Centre forExplosion Protection and Safety of Instrumentation (GYJ17.1057X) (Attachment I )GY J17.1 057X�lIit�iiEffi"{tt I1'1'1 }ßl1i&\;ltfr+ ;;:Wri� '§'j �tz: ß'.JTMT121/127/128�3i�1Mdt5V!:1l� c ��j L:t:�) , � I� �� 1x..g�1x�Il1J��:i:%-l.'����ft�(NEPSIH:ft��, �B:ifTJ�f5Ff1t:GB3836.1-2010 ;l�HFtl:l:;f:LJ't�1:gf)7J\.: &-1.r J.ill.):g�*GB3836.8-2014 ;/;!!Ht'l"tPfm �8:gß7t: U,I "n"FJD�J5il�HF;:tEx nA II C T4�T6 Ge, �J5;tiif*hLE�GY J17.1 057Xo;;$: iLE.=p; iA PT I'('.J F���. #Ht P�I T :iTEMP pCP DIN rail TMT 121-20iTEMP RTD DIN rail TMT 127-20iTEMP TC DIN rail TMT 128-20X�: O*��.��.��� .•• ffi��, W�F��mm��o-. F 5it:tc:i:�ffl *f��{tfA#�W�T:;;$:F�10f�*�fi;J, :tIJJUh1tmn�·�N:t:�fr�B:�GB4208-2008N\lJEFI J IP54�Lt. JitittJ"J!: GB3836.1-201 o tnGB3836.8-2014!?f*ß'.Jjr:J't/!=' 0=,F5it�fflr±f!.J.}Ji1, FRn1!fmJf:Ijß�ffiU�t D�JJnBjJiJB���:�l5tmfJl J T4 T5 T6jb9=:q��11ü\.15t -40'C-+85'C -40'C -+65 'c -40'C-+50'C2. FRr,I'F11jt Ft!, Itlli15J: 8�35Vde o3. 7t� B� fm!t l}[ 5e�..g� j r :rMfr�}1±fuftltd T, IJI)h 1!f m n�' @04.m����ff�.���F�ß'.J��$$#, @��F���ft��M*�ff�� ���., ����m.tl��m���ß'.J��o5. F� 1'F1:t:�. 1!ft8tD�fu�)� @If.1J F,f�r1!f Fl-J���. GB3836.13-2013 "!it1=tt:q� lJ't �13gß7t:&�B�1Itll. fft11t. 1��tDi:&jjl[" GB3836.15-2000 ".tt:'t1/-"t#Pf l�t8� �1Jl� t1115$7t: m:;�ft:f:hfifi��:t:� ctNJrI!#;jl') " GB3836.16-2006 ".tH1�1*Pfjjt ffllt�i&1k-�16tfll5}: t:h���ß'.J��t D�tt�J� o}.lnr�#;!tr) " RGB50257-2014 "�I1�i&.�(GY J 17.1 057X)�,it!J)t rJJf iE2mU � r &, �JjJ )'L I<: *it :r5< fln NE P SI iA riJ-B� )( 1�: j9i �4 �F ; 3 � � tt Jt� rp ßY � j> {Q. J5 r JU r*J � :a) N EPS I -!A nJt;F$ (�ltIJ;lIil-*itiiE b) c )�)]-;lI il-*it iiE -'%d ) 1t J-FJ Jf jjHfm &(Attachment I )�*�{)(�{)(��1I��lI{r1f�%M National Supervision and Inspection Centre forExplosion Protection and Safety of Instrumentation(GYJ17.1057X) (Attachment I )Attachment I to GYJ17.1057X1.TMT121 /127/128 series Temperature transmitter (DIN rail), manufactured by Endress+Hauser Wetzer GmbH + CO.KG, has been certified by National Supervision and Inspection Center for Explosion Protection and Safety of Instrumentation (NEPSI). The product accords with following standards:G83836.1-2010 Explosive atmospheres-Part 1: Equipment-General requirementsG83836.8-2014 Explosive atmospheres-Part 8: Equipment protection by type of protection "n"The Ex marking is Ex nA TI C T 4-T6 Gc, its certificate number is GY J17.1 057X.Type approved in this certificate is shown as the following:iTEMP PCP DIN rail TMT121-2DiTEMP RTD DIN rail TMT127-2DiTEMP TC DIN rail TMT128-2Do indicates type of connection, sensor, meauring range and ete.Refer to instruction manual for the details.2. Special Conditions for Safe UseThe suffix "X" placed after the certificate number indicates that this product is subject to special conditions for safe use, that is:When using this head type product, it shall be installed in the enclosure which IP degree is at least IP54 according to G84208-2008, and meet the relative requirements of G83836.1-201 0 and G83836.8-2014.3. Conditions for Safe Use3.1 The relationship between ambient temperature range and the temperature class is shown as folIows:Temperature class T4 T5 T6Ambient temperature range -40"C-+85"C -40"C-+65"C -40"C-+50"C3.2 Electrical data: 8-35 Vdc.3.3 The external earth connection facility of the whole product shall be connected reliably.3.4 The user shall not change the configuration in order to maintain/ensure the explosion protection performance of the equipment. Any change may impair safety.3.5 For installation, use and maintenance of this product, the end user shall observe the instruction manual and the following standards:Page 1 of 2(GY J17.1 057X) (Attachment I )GB50257-2014 "Code for construction and acceptance of electric device for explosion atmospheres and fire hazard electrical equipment installation engineering".GB3836.13-2013 "Explosive atmospheres-Part 13:Equipment repair, overhaul and reclamation".G B3836.15-2000 "Electrical apparatus for explosive gas atmospheres-Part 15:Electrical installations inhazardous area (other than mines)".GB3836.16-2006 "Electrical apparatus for explosive gas atmospheres-Part 16:lnspection and maintenance of electrical installation (other than mines)".4. Manufacturer's Responsibility4.1 Conditions for safe use, as specified above, should be included in the documentation the user is provided with. 4.2 Manufacturing should be done according to the documentation approved by NEPSI.4.3 Nameplate should include these contents listed below:1) NEPSl logo @2) Ex marking3) certificate number4) ambient temperature5) electrical dataPage 2 01 2。

T5技术参数本页仅作为文档封面，使用时可以删除This document is for reference only-rar21year.March◆T5高效直管荧光灯特点：T5技术加新型反射材料的节能效果，与T8灯具相比：1、更高的发光效率：从70Lm/W提高到90Lm/W,使效率提高36%2、新型材料有更高的反射率：从85%提高到95%，使效率提高10%3、管径的缩小、光源工作环境的优化，使效率提高15%4、T5与T8总的灯具相比，整体效率提高72%T5高效直管荧光灯光电参数一、T5灯管的外形尺寸二、T5灯管的电参数三、T5灯管的光通量四、T5灯管的色参数五、T5灯管的流明维持率与寿命附——详解 T5灯管规格型号中“T”及其后面数字意义"T"，代表“Tube”，表示管状的，T后面的数字表示灯管直径。

T8就是有8个“T”，一个“T”就是1/8英寸。

一英寸等于25.4毫米。

那么每一个“T”就是25.4÷8=3.175mmT12灯管的直径就是(12/8)×25.4=38.1 mmT10灯管的直径就是(10/8)×25.4=31.8mm8灯管的直径就是(8/8)×25.4=25.4mm [T8的刚好是直径一英寸的灯管] (注：统一宽度39mm、高度52mm)常用的日光灯长度与功率：(20w 长620mm; 30w 长926mm; 40w长1230mm)T5灯管的直径就是(5/8)×25.4=16 mm (注：统一宽度23.5mm、高度39mm)常用的日光灯长度与功率：(8w 长310mm; 14w 长570mm; 21w 长870.5mm; 28w 长1170.5mm; 35w 长1475mm)T4灯管的直径就是(4/8)×25.4=12.7 mm (注：统一宽度21mm、高度32mm)常用的日光灯长度与功率：(8w 长341mm; 12w 长443mm; 16w 长487mm; 20w 长534mm;22w 长734mm; 24w 长874mm; 26w 长1025mm; 28w 长1172mm)3.5灯管的直径就是(3.5/8)×25.4=11.1 mmT2灯管的直径就是(2/8)×25.4=6.4 mm根据瓦数不同而长度不同，一般家庭常用:20W长度64cm 640mm30W长度96cm 960mm40W长度128cm 1280mm◆T5节能荧光灯管特性与经济效益光效高萤光粉对于日光灯管是非常重要的。

ASTM E595-2015 标准是指美国材料和试验协会（ASTM International）发布的有关航空航天设备在航天应用中使用的固体物质放射成分的标准规范。

该标准的最新修订版为2015年发布的，是一份十分重要的文件，对于航空航天行业的发展和安全起着至关重要的作用。

让我们来了解一下ASTM E595-2015标准的主要内容和要点。

一、标准的适用范围ASTM E595-2015标准适用于用于航天应用的固体物质，主要是用来评估这些物质放射成分对航空航天设备和系统的影响。

这些影响主要包括摄入到航天器内的空气中，导致空间环境的电离辐射、热量和化学性质的变化，或者对航天器材料的气体溶解性等方面的影响。

二、标准的测试方法ASTM E595-2015标准规定了对航空航天设备中使用的固体物质进行测试的方法和程序。

这包括对材料的挥发性成分、总质量损失以及化合物放射性的测定方法。

通过这些测试方法，可以评估出实际使用中材料的放射成分是否符合航天器对材料放射性的要求。

三、标准的意义ASTM E595-2015标准的发布对于航空航天行业具有重要的意义。

在研究和设计阶段，航空航天设备的制造商和设计者可以根据这一标准对材料进行合格性评价，以确保所选用的材料符合航天器航天环境下的应用要求。

在材料生产和选择过程中，该标准为材料供应商和用户提供了一个统一的测试方法和指标，使双方能够更加明确地了解材料的放射成分。

另外，ASTM E595-2015标准还可以为航空航天事故的调查提供数据支持。

当航空航天器发生故障时，可以通过对事故发生时所使用的材料进行放射成分测试，以判断材料是否与事故有关。

在实际应用中，ASTM E595-2015标准也受到了国际空间站、航空航天器以及卫星等航空航天设备生产和维护单位的广泛应用和认可。

对于航天器的装配和操作人员来说，ASTM E595-2015标准是保障航空航天器航天环境安全的重要依据。

ASTM E595-2015标准在国际上也具有广泛的影响力。

T5线性泛光灯主要性能指标T5线性泛光灯问世后很快受到照明行业的重视,国际电工委员会已于1997年12月将T5荧光灯系列纳入IEC60081标准,对灯的尺寸、启动特性、电特性、阴极特性等作了规定。

2002年5月,我国发布的GBPT10682 —2002《双端荧光灯性能要求》国家标准也收纳了T5 灯管系列内容。

从参数指标上看,光参数、寿命等指标与国外大公司尚有一定差距,这也客观反映了国内多数厂家的制灯工艺水平。

这里就几项主要性能指标加以分析,并提出相应控制方法。

1、电参数及其控制T5 线性泛光灯分为高光效(HE) 和高亮度(HO) 两大系列。

IEC60081 和GBPT10682 —2002 中规定了T5 HE系列灯管的额定电流、灯端电压等电参数。

两个标准的相关参数完全一样,所不同的是IEC60081 规定测试温度为35 ℃,而GBPT10682 —2002 规定测试温度为25 ℃。

实际上在不同温度下,电参数特别是灯端电压是有一定变化的。

对于T5 (HE) 荧光灯,其显著特点是无论额定功率为何种规格,灯的额定电流都一样,从而使该系列各种规格灯管的阴极特性完全一样,简化了阴极设计,更便于大规模生产中的品种调整。

对于T5 HO 系列荧光灯,是在与HE 荧光灯管长相等的条件下,通过提高工作电流增加灯的功率以获得更大光输出的。

标准规定,不同规格的灯管,工作电流不同,因此阴极的设计也不相同。

在灯管的设计尺寸和灯电流确定后,灯端电压和灯功率很大程度上取决于灯管的真空度以及充入惰性气体的种类和压力。

有资料介绍,T5 HE 灯管采用纯氩作填充气体,目的是防止充填氪氩混合气低温下易产生的“条纹放电”现象。

但实际上,如充填纯氩灯端电压和功率接近甚至超过标准规定上限,无法达到额定值。

由理论计算和实际制灯试验可知,要达到IEC 标准规定的电参数额定值仍可采用氪氩混合气。

从理论上讲,气体的原子量越大,电子与它碰撞截面越大,碰撞几率增加。

龙源期刊网
领袖之魂：2015款上海大众帕萨特
作者：
来源：《中国汽车市场》2015年第17期
上市时间：8月13日
指导价格：18.38万-32.28万元
作为B级车市场的热门选手，上海大众帕萨特通过不断的细节精进来诠释产品魅力。

2015款帕萨特部分车型配置有所提升，其中尊荣版车型和蓝驱技术版车型将会在车内标配多功能方向盘、12向主/副驾驶席座椅电动调节功能，而1.8TSI DSG尊荣版车型将提供6.5英寸中控液晶屏选装。

此外，御尊版车型将会标配座椅/后视镜记忆、后视镜倒车自动折叠功能等。

在动力部分，新款帕萨特依旧会搭载1.4TSI、1.8TSI、2.0TSI以及3.0L四款发动机。

在传动系统部分，其将使用的是5速手动、6速手自一体、6速双离合以及7速双离合变速器。

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.ES-ACV-SB-LFF115_LFF1115LFF115 (Globe) LFF1115 (Angle)Pressure Reducing Control Valve*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.Standard Components(3)(3)(3)(2)(2)(1)(1)Standard 3" & Smaller Standard 4" & Larger Optional All Sizes(3)(2)(1)Schematics• Throttles to reduce high upstream pressure to constant lower downstream pressure1 – Main Valve (Single Chamber)2 – Pressure Reducing Control3 – Fixed Orifice• Reducing setpoint is adjustableOperationsThe Watts ACV Pressure Reducing Control Valve is designed to automatically reduce a fl uctuating higher upstream pressure to a constant lower downstream pressure regardless of varying fl ow rates. It is con-trolled by a normally open, pressure reducing pilot designed to: 1) Open (allowing fl uid out of the main valve cover chamber) when downstream pressure is below the adjustable setpoint, and 2) Close (allowing fl uid to fi ll the main valve cover chamber) when downstream pressure is above the adjustable setpoint. A decrease in downstream pressure causes the valve to modulate toward an open position, raising downstream pres-sure. An increase in downstream pressure causes the valve to modulate toward a closed position, lowering downstream pressure.○X – Isolation Cocks ○FC – Flo-Clean Strainer ○Y – Y-Strainer (Replaces Flo-Clean) ○ACS – Adjustable Closing Speed(Replaces Fixed Orifi ce) ○AOS – Adjustable Opening Speed ○P – Position Indicator ○L – Limit Switch Options & Accessories2C lassiC s eriesLFF115 (Globe)LFF1115 (Angle)Body & Cover: Ductile Iron ASTM A536Coating:NSF Listed Fusion Bonded Epoxy Lined and Coated Trim:316 Stainless SteelElastomers: Buna-N (standard) EPDM (optional)Viton (optional)Stem, Nut & Stainless SteelSpring:MaterialsGlobeAngleOperating PressureOperating TemperaturePilot SystemTubing & FittingsThreaded = 400 psi Buna-N: 160°F Maximum Reducing Control Copper / Brass (Standard)150 Flanged = 250 psi EPDM: 300°F Maximum 20-175 psi (Standard)Stainless Steel (Optional)300 Flanged = 400 psiViton: 250°F Maximum0-30 psi (Optional)100-300 psi (Optional)Valve Cover Chamber CapacityValve TravelDimensionsABCDEFGHIJKLMVALVE SIZE GLOBE THRD.GLOBE 150#GLOBE 300#COVER TO CENTER ANGLE THRD.ANGLE 150#ANGLE 300#ANGLE THRD.ANGLE 150#ANGLE 300#PORT SIZE PORT SIZE PORT SIZE SHIPPING WEIGHTS*1-1/47-1/43-1/23-1/41-7/81/41/21/8151-1/27-1/48-1/293-1/23-1/441-7/841/41/21/81529-3/89-3/8104-15/16444-1/4444-1/41/21/21/4352-1/2111111-5/875-1/25-1/25-13/16444-5/161/21/23/865310-1/21213-1/475-1/45-3/46-1/85-1/45-3/46-1/81/21/23/89541515-5/88-5/86-3/47-1/86-3/47-1/81/21/23/81906202111-3/48-1/28-7/88-1/28-7/81/21/21/2320825-3/826-3/815-3/41111-1/21111-1/21/211/26501029-3/431-1/818-3/414-7/815-5/814-7/815-5/81119401234 35-1/220-5/81717-3/41717-3/411115001439 40-1/222-1/411116751641-3/843-1/226-1/41113100*Estimated in lbs.Valve Size (in)1-1/41-1/222-1/2346810121416fl.oz. 44410102270U.S. Gal1-1/42-1/246-1/29-1/2Valve Size (in)1-1/41-1/222-1/2346810121416Travel (in)3/83/81/25/83/411-1/222-1/233-1/243C lassiC s eriesSizingCAVITATION ZONEINLET PRESSURE - PSI OUTLET PRESSURE - PSI30028026024022020018016014012010080604020102040506070809013014012011010030After selecting the valve size, locate inlet and outlet pressures on this chart. If the intersection point falls in the shaded area, cavitation can occur. Operation of valves continually in the cavitation zone should be avoided. Consult Watts ACV for alternatives.Cavitation ChartSize (in)1-1/41-1/222-1/2346810Maximum Continuous (GPM)95130210300485800185031005000Maximum Intermittent (GPM)1191612653905901000230040006250Minimum Continuous (GPM)111203050115200300Maximum continuous fl ow based on velocity of 20 ft. per second. Maximum intermittent fl ow based on velocity of 25 ft. per second. Minimum continuous fl ow based on velocity of 1 ft. per second.NOTE: The above chart is a suggested guide. Inlet pressure, outlet pressure, minumum, normal and maximum fl ow rates shouldbe considered for specifi c valve sizing. Contact Watts ACV for details.LFF115 (Globe)LFF1115 (Angle)4C lassiC s eriesITEM DESCRIPTION MATERIAL1Cover ASTM A536 65-45-12 Epoxy Coated Ductile Iron 2Cover Bearing SAE 841 Bronze3Shaft / Stem ASTM A276 304 Stainless Steel 4Stud ASTM A570 Gr.33 Zinc Plated Steel 5Cover Nut ASTM A570 Gr.33 Zinc Plated Steel 6Diaphragm*Buna-N (Nitrile)7Body ASTM A536 65-45-12 Epoxy Coated Ductile Iron 8Quad Seal*Buna-N (Nitrile)9Seat Ring ASTM A743 CF8M (316) Stainless Steel 10Spring ASTM A276 302 Stainless Steel 11Stem NutASTM A276 304 Stainless Steel12Diaphragm Washer ASTM A536 65-45-12 Epoxy Coated Ductile Iron 13SpacerASTM A276 304 Stainless Steel14Quad Seal Retainer ASTM A536 65-45-12 Epoxy Coated Ductile Iron 15O-Ring*Buna-N (Nitrile)16Quad Seal Plate ASTM A743 CF8M (316) Stainless Steel 17Seat Gasket*Buna-N (Nitrile)* Contained in Main Valve Repair KitLFF115 (Globe)LFF1115 (Angle)C lassiC s eries Cross Sectional DetailITEM NUMBER DESCRIPTION1Adjusting Screw DESCRIPTIONLFF115 (Globe)LFF1115 (Angle)Outlet Inlet GaugePressure Reducing PilotModel LF263AP56C lassiC s eriesLFF115 (Globe)LFF1115 (Angle)InstallationsStart-UpProper Automatic Control Valve startup requires bringing the valve into service in a controlled manner. All adjustments to control pilots and speed controls should be made slowly, allowing the valve to respond and the system to stabilize.Control Valves should be set-up in a dynamic (flowing) condition for proper start-up. Provisions for flow must be made to insure proper settings.1. Close upstream and downstream valves to isolate the valve from line pressure. Release spring ten-sion on Pressure Reducing Control by turning adjustment screw out (counterclockwise), decreas-ing setpoint. Open all Isolation Ball Valves, if so equipped. If valve is fitted with adjustable speed controls, turn needle(s) in (clockwise) until seated, and return out (counterclockwise) 11/2 to 21/2 turns. These are approximate settings, and should be fine tuned to suit system requirements after pressure adjustments have been made.2. Slowly open upstream isolation valve to allow controlled filling of the valve. Vent entrapped air bycarefully loosening control tubing or pipe plug at the highest point possible. If valve is equipped with a Position Indicator, open Air Bleed Petcock to vent air. Water will be milky in appearance and will begin to clear as air is vented. Carefully loosen enough cover screws on control pilot(s) to vent entrapped air. Retighten when water vents clearly.3. Setting Reducing Control: Slowly open downstream isolation valve. Gradually turn adjustmentscrew on the Pressure Reducing Control in (clockwise) to raise downstream pressure. Allow valve and system to stabilize. Observe inlet and outlet pressure gauges. Continue to adjust as needed, pausing approximately every 11/2 turns, allowing valve and system to stabilize. Turning adjustment screw clockwise raises outlet pressure. Turning adjustment screw counterclockwise lowers outlet pressure. When desired downstream pressure is reached, tighten locknut on adjustment screw.4. Fine tune Speed Controls to suit system requirements. Adjust Closing Speed Control (if equipped)clockwise for slower closure, and counterclockwise for faster closure. Adjust Opening Speed Control (if equipped) clockwise for slower opening, and counterclockwise for faster opening.• Prior to installation, flush line to remove debris.• Install valve horizontally “in line” (cover facing up), so flow arrow matches flow through the line. Avoid installing valves 6" and larger vertically. Consult factory prior to ordering if installation is other than described.• Install inlet and outlet isolation valves.When using butterfly valves, insure disc does not contact control valve. Damage or improper valve seating may occur.• Provide adequate clearance for valve servicing and maintenance.• Install pressure gauges to monitor valve inlet and outlet pressure.• If installation is subjected to very low flow or potentially static conditions, it is recommended a pressure relief valve (1/2" minimum) be installed downstream of the Pressure Reducing Valve for additional system protection.C lassiC s eries SpecificationsLFF115 (Globe) LFF1115 (Angle)The Lead Free* Pressure Reducing Control Valve shall be a pilot operated diaphragm valve designed to automatically reduce a fluctuating higher upstream pressure to a constant lower downstream pressure re-gardless of varying flow rates.The main valve shall be a hydraulically operated, single diaphragm actuated, globe or angle pattern valve. Y-pattern valves shall not be permitted. The valve shall contain a disc and diaphragm assembly that forms a sealed chamber below the valve cover, separating operating pressure from line pressure. The diaphragm shall be constructed of nylon reinforced Buna-N, and shall not seal directly against the valve seat and shall be fully supported by the valve body and cover. Rolling diaphragm construction will not be allowed and there shall be no pistons operating the main valve or any pilot controls.The main valve body and cover shall be Ductile Iron ASTM A536, and all internal cast components shall be Ductile Iron or CF8M (316) Stainless Steel. All Ductile Iron components, including the body and cover, shall be lined and coated with an NSF 61 Certified Epoxy Coating applied by the electrostatic heat fusion process. All main valve throttling components (valve seat and disc guide) shall be Stainless Steel. The valve body and cover must be machined with a 360-degree locating lip to assure proper alignment.The disc and diaphragm assembly shall contain a Buna-N synthetic rubber “Quad Seal” that is securely re-tained on 3-1/2 sides by a disc retainer and disc guide. Diaphragm assemblies utilizing bolts or cap screws for component retention will not be permitted.The exposed portion of the Quad Seal shall contact the valve seat and seal drip-tight. The disc and dia-phragm assembly must be guided by two separate bearings, one installed in the valve cover and one con-centrically located within the valve seat, to avoid deflection and assure positive disc-to-seat contact. Center guided valves will not be permitted. All necessary repairs shall be made from the top of the valve while the body remains in line.Pilot control systems for valves 3" and smaller shall contain a Flow Clean Strainer, Fixed Orifice Closing Speed, Adjustable Opening Speed Control and Pressure Reducing Pilot. Pilot control systems for valves 4" and larger shall contain an external Y-Strainer, Fixed Orifice Closing Speed, Pressure Reducing Pilot and Isolation Ball Valves on all body connections. All pilot control systems shall utilize copper tubing and brass fittings regardless of valve size. The adjustment range of the pressure reducing pilot shall be 30-300 psi. The valve shall be Watts ACV Model LFF115 or (Globe) or LFF1115 (Angle) pattern Pressure Reducing Control Valve.Other Watts ACV Pressure Reducing Control ValvesLFF115-3 / LFF1115-3 Pressure Reducing Valve with Hydraulic Check FeatureLFF115-7 / LFF1115-7 Pressure Reducing Valve with Downstream Surge Control FeatureLFF115-74 / LFF1115-74 Pressure Reducing Valve with Low Flow By-Pass*The wetted surface of this product contacted by consumablewater contains less than 0.25% of lead by weight.7ES-ACV-SB-LFF115_LFF1115 1410 © 2014 WattsUSA: Tel: (713) 943-0688 • Fax: (713) 944-9445 •。