3 Procurement scope
     供貨商應在合同規定的時間內提供氣動提升式切換球閥， 每臺球閥的供貨范圍應包括但不限于以下內容：
1）球閥本體及氣動執行機構；
2）氣動三聯件（包括過濾器、油霧器、壓力表）、所有氣源管線及相關連接件；
3）隔爆電磁閥及隔爆閥位開關；
4）閥門安裝所需的對應法蘭、螺栓、螺母、墊片；
5）維修所需的專用工具。
投標商認為需要配套提供的其它附屬設備和零件，供貨商有義務加以說明，以供業主選擇。
Supplier shall provide pneumatic lifting-type switching ball valve within the time period prescribed in the contract. Supply scope of every ball valve shall include but not limited to:
1) Body of ball valve and pneumatic actuating mechanism;世聯翻譯公司完成機械-氣動式切換英文翻譯
2) Pneumatic units (including filter, atomized lubricator, pressure), all air source pipelines and related connections;
3) Explosive-proof solenoid valve and explosive-proof valve position switch;
4) Corresponding flanges, bolts, nuts and gaskets used for valve installation;
5) Special tools used for repairing.
Tenderer believes that supplier has obligations to explain other matched accessory equipments and parts required to be provided to owner to select.
 
4  技術規定
4 Technical specifications
 4.1  氣動提升式切換球閥安裝在2區、ⅡB組（依據IEC/Cenelec的分區）防爆戶外場所，溫度等級為T4，防護等級應不低于IP65。
4.1 Pneumatic lifting-type switching ball valve is installed explosive-proof outdoor location of 2^nd area and II B group (based on area division of IEC/Cenelec), temperature class is T4, and protection class shall not lower than IP65.
 
4.2  基礎數據
詳見附件7：氣動提升式切換球閥計算數據表
4.2 Basic data
Please refer to Appendix 7: Calculation data sheet of pneumatic lifting-type switching ball vale.
 
4.3 總的要求
4.3 General requirements
1) 本技術要求只適用于 (分子篩脫水工藝)所用的氣動提升式切換球閥。供貨商應根據本工程的實際情況以及相應的技術要求，設計、制造、集成和提供氣動提升式切換球閥。要求氣動提升式切換球閥為防火安全型。
1) The technical requirements are only applicable to pneumatic lifting-type switching ball valve used in (molecular sieve dehydration process). Supplier shall design, manufacture, integrate and supply pneumatic lifting-type switching ball valve based on actual situation of this project and relevant technical requirements. It is required that pneumatic lifting-type switching ball valve is fire protection type.
2) 對于每臺閥門的閥體材質，應選用適合環境溫度及工藝條件的材料。與介質接觸的所有部件的材質應使用適于介質的材料制造，要符合NACE MRO175的有關規定。
2) As for material of every valve’s body, the material which is suitable for ambient temperature and process conditions shall be selected. Material of all components which contact with medium shall be suitable for medium and conform to related regulations stipulated in NACE MRO175.
3) 每個閥門和執行機構組合體的選型計算書應提交給業主和設計方。
3) Selection calculation sheet for every valve and actuating mechanism assembly shall be submitted to owner and design party.
4) 執行機構和閥門應在裝配后整體供貨。氣動提升式切換球閥所屬的有關隔爆電磁閥、閥位開關、氣動執行機構、氣動三聯件等附件應與所選用的切換閥類型、尺寸等相配套，并作為閥的一個組成部分，由氣動提升式切換球閥供貨商配套提供，向業主統一供貨，并在氣動提升式切換球閥發貨前由工廠進行組裝并對全部功能進行合格測試。執行機構及其附件應能防沙塵的影響。
4) Actuating mechanism and valves shall be supplied as a whole after assembling. Accessories of pneumatic lifting-type switching ball valve, such as explosive-proof solenoid valve, valve position switch, pneumatic actuating mechanism, pneumatic units, shall be matched with selected switching valve’s type, size and etc., and act as a constituent part of the valve. Such accessories shall be supplied by supplier of pneumatic lifting-type switching ball valve to owner, assembled by factory and all their functions shall be tested as qualified before delivery of pneumatic lifting-type switching ball valve. Actuating mechanism and its accessories shall not be affected by dust.
5) 本技術要求為所用氣動提升式切換球閥的主要技術性能和檢驗要求，并不包括氣動提升式切換球閥及執行機構設計、制造、測試、總裝和發運所應遵循的所有技術文件，供貨廠商還應提供詳盡的技術文件，經業主確認后，方可按本技術要求和執行標準進行生產、檢驗，并對氣動提升式切換球閥配套的完整性、可操作性、適用性負責。
5) This technical requirements are the main technical parameters and inspection requirements for pneumatic lifting-type switching ball valve, excluding all technical documents which must be followed by design, manufacturing, test, final assembly and delivery of pneumatic lifting-type switching ball valve. Supplier shall provide detailed technical documents. Conduct production and inspection in accordance with this technical requirement and executed standards upon owner’s confirmation. Supplier also shall be responsible for completeness, operability and applicability of pneumatic lifting-type switching ball valve.
6) 所采購的氣動提升式切換球閥的規格、數量以及詳細參數見氣動提升式切換球閥計算數據表。
6) Please refer to calculation data sheet of pneumatic lifting-type switching ball valve for specification, quantity and detailed parameters of procured pneumatic lifting-type switching ball valve.
7) 每個氣動提升式切換球閥均應適應現場的全天候運行操作。
7) Every pneumatic lifting-type switching ball valve shall adapt to operation all the time on site.
8) 氣動提升式切換球閥必須充分考慮到介質中攜帶的分子篩顆粒造成的閥芯、閥座與球面的磨損，應做好必要的硬度處理。同時供貨商必須提供充分證明和同類工況的使用業績。
8) It is necessary to fully consider the abrasion of valve spool, valve seat and ball surface caused by molecular sieve particles carried by medium, and so make necessary hardness treatment. In addition, supplier must provide sufficient evidences and using achievements in the same working condition.
9) 隔爆電磁閥、隔爆閥位開關、氣動執行機構應按照閥門在最惡劣的操作條件下工作進行選擇，應充分考慮工況及環境溫度的影響，并且要求有一定的安全系數。執行機構整體組裝應該是密封的，適合于戶外操作。
9) Explosive-proof solenoid valve, explosive-proof valve position switch, pneumatic actuating mechanism shall be selected on the condition that valve works under the worst operation situation, fully consider effect of working condition and ambient temperature, and it is required to have certain safety coefficient. Integral assembly of actuating mechanism shall be sealed and suitable for outdoor operation.
 
4.4 閥門：
4.4 Valve
1) 為了達到無摩擦的操作方式，開啟閥門時閥桿應首先提升使閥球傾斜與閥座脫離接觸，然后閥桿驅動閥球轉動達到開啟位置。關閉閥門時應使閥桿帶動閥球在不接觸閥座的情況下轉動，然后閥桿下降壓迫閥球壓緊在閥座上。
1) In order to achieve no-abrasive operation mode, when open valve, valve stem firstly lifts valve ball and make it incline for out of contact with valve seat, then valve stem drives valve ball to move to reach opening position. When close valve, make valve stem drive valve ball to move on the condition of out of contact with valve seat, then valve stem goes down and oppress valve ball to tightly compress on the valve seat.
2) 閥桿下端驅動閥球的部分應為前后平行的楔型面，并通過閥球上嵌入的一組不銹鋼或合金材質的閥芯銷釘驅動閥球轉動并脫離或壓緊閥座。
2) The part which is driven by the lower end of valve stem shall be wedge surface with front and rear edges in parallel, and a group of valve spool pins in stainless steel or alloy embedded in the valve ball drive valve ball to move and separate from or tightly compress valve seat.
3) 拆卸閥門內部零件應通過拆卸閥門頂裝式的閥蓋實現。
3) Dismantling parts inside valve shall be realized through dismantling valve’s top-mounted valve cover.
4) 閥球應設計為固定球式并內嵌閥球銷釘和支撐銷釘，銷釘應為可更換設計。
4) Valve ball shall be designed as fixed ball type with embedded with valve ball pins and supporting pins. Such pins shall be designed as replaceable.
5) 閥桿和閥球的位置應由閥桿導銷與閥桿軌道的配合來控制。閥桿導銷必須可以從外部拆卸。
5) Positions of valve stem and valve ball shall be controlled by coordination of valve stem guide pins and valve stem rails. Valve stem guide pins must be able to be dismantled from outside.
6)閥位指示器應為與提升式閥桿相連接的鋼質桿狀指示器。
6) Vale position indicator shall be steel rod-shaped indicator connected with lifting-type valve stem.
7) 手輪或軸承的固定應使用螺栓或螺母壓緊，不允許使用彈性卡環，順時針轉動手輪時閥門關閉。
7) Hand wheel or bearings shall be fastened by bolts or nuts; flexible clasp is not allowed. Valve is closed if move hand wheel in clockwise direction.
8) 操作閥門的頂裝手輪或側裝齒輪箱手輪在關緊閥門時全全壓差下能達到零泄漏并應能正常操作，手動操作力不大于200N。
8) When valve is tightly closed, operated valve’s top-mounted hand wheel or side-mounted gearbox’s hand wheel can reach zero leakage and can be normally operated under full pressure difference. Manual operation force shall not more than 200N.
9) 閥體上應有銘牌和流向標志，并且閥體上應設有吊裝用吊環。
9) There shall be nameplates and signs of flow direction on the valve body. Valve body shall be set with lifting rings for lifting.
10)  球閥應設有支座或支腿，便于安裝。
10) Valve ball shall be set with support or leg for easy installation.
11)  閥門要求采用全通徑，閥芯不得縮徑，滿足數據表的流量要求。
11) Valve is required to adopt full bore type; valve stem is not allowed to adopt reduced bore, satisfying requirements for flow stipulated in data sheet.
12）閥體材質：LCC低溫碳鋼（供貨商應根據工況條件及環境溫度核實該材質是否適用于本工程）。
12) Material of valve body: LCC low temperature carbon steel (supplier shall check whether this material is suitable for this project according to working conditions and ambient temperature).
13）閥球表面應堆焊硬質合金，以滿足工況要求（供貨商應根據工況條件及環境溫度核實閥芯材質是否適用于本工程）。
13) Valve ball’s surface shall be welded with hard alloy through overlaying welding to satisfy requirements of working conditions (supplier shall check whether material of valve spool is suitable for this project according to working conditions and ambient temperature).
14）閥門要求零泄漏，為高性能、國外生產廠生產。
14) Valve is required to be zero leakage and manufactured by foreign manufacturers with high performance.
15）由供貨商根據溫度確定是否采用伸長型閥桿，投標書必須對閥門的使用溫度進行說明，以保證閥門在高溫下的使用性能。
15) Supplier is responsible for determine whether extension valve stem is to be used or not according to temperature. Valve’s working temperature must be explained in the bidding documents, so as to ensure working performance of valve under high temperature.
                                                                                                                                                                                                                            
16) Valve shall be failure lockup valve.
 
4.5氣動執行機構
4.5 Pneumatic actuating mechanism
1) 執行機構應包括氣動驅動裝置、電磁閥、閥位開關、氣動三聯件等，氣動驅動裝置應為低溫氣缸或者膜片。
1) Actuating mechanism shall include pneumatic driving device, solenoid valve, valve position switch, pneumatic units and etc. Pneumatic driving device shall be low-temperature cylinder or membrane.
2) 執行機構的行程/扭矩要求取決于：
— 該閥門尺寸；
— 該閥門結構及類型（等級系列）；
— 閥前后最大壓差；
— 操作溫度和環境溫度；
— 管線內流體類型；
— 閥桿尺寸；
— 管線工作壓力等。
決定執行機構選擇的其它因素有閥門開關速度、控制方式等，閥桿行程和需要的扭矩應從閥門制造商獲得。執行機構的輸出力矩的大小應能操作最惡劣操作條件下的閥門。執行機構輸出力矩要留一定的安全系數，以保證在最大壓差下平穩操作閥門。
2) Actuating mechanism’s stroke / torque requirements depend on:
- This valve’s size;
- This valve’s structure and type (class and series);
- Maximum pressure difference before and after operation of valve;
- Operation temperature and ambient temperature;
- Fluid type inside pipelines;
- Valve stem’s size;
- Pipeline’s working pressure and so on.
Other factors determining the selection of actuating mechanism are speed of valve switch, control mode and etc. Valve stem’s stroke and required torque can be obtained from valve manufacturer. Output moment value of actuating mechanism shall be suitable for valves operated under the worst operation condition. Output moment of actuating mechanism shall keep out certain safety coefficient, to ensure stable operation of valve under maximum pressure difference.
3) 開關型執行機構的定位精度應高于1%，重復精度和遲緩率不大于全行程的1%，死區應可以調整。
3) Switch-type actuating mechanism’s positioning accuracy shall be high than 1%, repeat accuracy and delay rate shall be not more than 1% of the whole stroke, dead zone can be adjusted.
4）除特殊要求外，閥門的開、關時間應小于30秒。
4) Except for special requirements, valve’s opening and closing time shall be less than 30s.
5）配帶操作手輪。
5) Equip with operation hand wheel.
6）在安裝過程中，執行機構應能根據需要改變相對于閥門的方位。
6) During installation, actuating mechanism shall be able to change position relative to valve.
7）執行機構的供氣壓力為：0.4MPa～0.6MPa（g）。執行機構應保證在0.4 MPa的氣源壓力下，氣動執行機構在全壓差下依然可以動作。
7) Air supply pressure of actuating mechanism: 0.4Mpa~0.6Mpa (g). Actuating mechanism shall guarantee that air actuating mechanism still can operate under full pressure difference when air source pressure is 0.4Mpa.
 
4.6電磁閥及閥位開關
1）推薦采用ASCO等類似品牌的低溫雙電控二位五通隔爆電磁閥， 防爆標志：ExdⅡBT4，信號電壓：24V DC；
2）電磁閥材質為不銹鋼，帶防爆接線盒（開、關信號各1個接線盒,接線盒帶接線端子），電磁閥與防爆接線盒為一體式，電氣連接尺寸：1/2”NPT（內）；
3）采用磁耦合原理的隔爆型開/關雙閥位開關，防爆標志：ExdⅡBT4，觸點容量：24V DC, 5A，兩個閥位信號共用1個防爆接線盒（帶接線端子），電氣連接尺寸：3/4”NPT（內）。
4.6 Solenoid valve an valve position switch
1) It is recommended to adopt low-temperature dual electronic controlled 5/2 way explosive-proof solenoid valve in ASCO or similar brand. Explosive sign: Exd II BT4, signal voltage: 24V DC;
2) Material of solenoid valve is stainless steel, with explosive-proof junction box (1 junction box for each opening signal and closing signal, junction box with connecting terminals), solenoid valve and explosive-proof junction box are integrated, electric connection size: 1/2’’NPT (inner);
3) Adopt explosive-proof open/close dual-valve-position switch in magnetic coupling principle, explosive sigh: Exd II BT4, contact capacity: 24V DC, 5A, two valve position signals use 1 explosive-proof junction box together (with connecting terminals), electric connection size: 3/4’’NPT, (inner).
 
4.7氣動三聯件及附件
1）氣動三聯件帶有壓力表、過濾減壓閥、油霧器及接頭；
2）氣路管線及接頭全部采用316SST；
3）氣路管線和接頭應留充足的備用量；
4）氣連接口的尺寸為：3/8”NPT（內）。
4.7 Pneumatic units and accessories
1) Pneumatic units are equipped with pressure gauge, filtering relief valve, atomized lubricator and joint;
2) All air pipelines and joints adopt 316SST;
3) Air pipelines and joints shall have sufficient reverses;
4) Size of air connecter: 3/8’’NPT (inner).
 
4.8法蘭、螺栓、墊片
1）要求提供閥門的配對法蘭、螺栓、螺母、墊片；
2）配對對焊法蘭為Ⅲ級鍛件，法蘭材質應與工藝管道材質保持一致，工藝管道的尺寸及材質見附件1；
3）雙頭螺栓：35CrMoA；
4）螺母：30CrMoA；
5）墊片：不銹鋼纏繞式墊片，按用量的提供300％提供。
4.8 Flange, bolt, nut
1) It is required to provide matched flanges, bolts, nuts and gaskets;
2) Matched welding neck flange is III grade forged piece. Material of flange shall be in line with that of process pipelines. Please refer to Appendix 1 for size and material of process pipelines;
3) Double-head bolt: 35CrMoA;世聯翻譯公司完成機械-氣動式切換英文翻譯
4) Nut: 30CrMoA;
5) Gasket: stainless steel spiral wound gasket, provided as 300% of consumption.
 世聯翻譯公司完成機械-氣動式切換英文翻譯
4.9其他要求
       1）閥門的墊片不組裝運輸。
2）提供閥門的現場服務，指導解決安裝、投運中的問題。
3）投標商應對數據表中的數據及閥門口徑進行核實，確保閥門的工作性能。
4）供貨商提供的氣動提升式切換球閥及其附件，必須滿足工況條件及環境溫度的要求。
4.9 Other requirements
1) Valve’s gaskets are not transported after assembly;
2) Provide valve’s field service, and provide guidance to solve problems happening during installation and operation;
3) Tenderer shall check data and valve bore stipulated in data sheet to ensure working performance of valve;
4) Pneumatic lifting-type switching ball valve and its accessories provided by supplier must satisfy requirements of working conditions and ambient temperature.

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