Keystone Figure 990/920 Butterfly Valve
The Keystone Figure 990/920 is a split body, thin disc resilient seated butterfly valve designed for high flow and modulating service. This valve excels in heavy duty applications where corrosion and abrasion resistance is required. It is available in both wafer (Figure 990) and lugged (Figure 920) style.
凱斯通F990/920蝶閥
凱斯通990/920是一個分體的閥體，薄閥板彈性閥座蝶閥設計的高流量和調(diào)節(jié)服務。這種閥門在需要耐腐蝕和耐磨的重型應用中非常出色。對夾式(圖990)和支耳式(圖920)。
Features
l One-piece, thin profile, disc stem provides minimum obstruction to flow, resulting in highest Cv, lowest pressure drops and best control characteristics.
l Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and tight shut-off.
l Triple function, resilient seat isolates body and stem from line media, provides drop-tight shut-off of line media at full-rated pressure and provides positive flange sealing, eliminating the need for flange gaskets.
l Heavy duty, corrosion resistant top bushing provides upper stem support, absorbs actuator sideloading and extends valve cycle life.
l Bi-directional, self-adjusting double V-cup stem seals prevent external contaminants from entering the valve.
l Split body design enables easy field replacement of seat and disc/stem and permits direct mounting of Keystone actuators without the use of couplings or brackets.
特征
l 單件，薄剖面，閥瓣閥桿提供較小的阻力，導致較高的CV，較低的壓降和較佳的控制特性。
l 圓形拋光閥瓣邊緣提供**的同心密封，較低的扭矩，較長的閥座壽命和緊密的關(guān)閉。
l 三重功能，彈性閥座隔離閥體和閥桿與線材介質(zhì)，在全額定壓力下提供直線介質(zhì)的降緊關(guān)閉，并提供正法蘭密封，消除了法蘭墊圈的需要。
l 重型，耐腐蝕頂部襯套提供上閥桿支持，吸收執(zhí)行器旁和延長閥門循環(huán)壽命。
l 雙向自調(diào)整雙V型杯閥桿密封防止外部污染物進入閥門.
l 分離式閥體設計使閥座和閥瓣/閥桿的現(xiàn)場更換變得容易，并且不需要使用聯(lián)軸器或托架就可以直接安裝Keystone執(zhí)行器。
Specifications
|
Material |
316 Stainless Steel, Buna-N, Cast Iron, Ductile Iron, Duplex, Epdm Rubber, Hastelloy, Monel, Super Duplex, Teflon, Titanium |
|
Operating Temperature |
Up to 250 F (120 C) |
|
Pressure Class |
ASME |
|
Process Connection Type |
150RF |
|
Seat/Seal Type |
Resilient |
|
Shutoff Class |
Zero Leakage |
|
Standards |
API 609, ASME B16.34 |
|
Valve Size |
nch, NPS 1 / DN 25, NPS 10 / DN 250, NPS 1-1/2 / DN 40, NPS 12 / DN 300, NPS 14 / DN 350, NPS 16 / DN 400, NPS 18 / DN 450, NPS 2 / DN 50, NPS 20 / DN 500, NPS 2-1/2 / DN 65, NPS 3 / DN 80 |
|
Valve Size Standard |
NPS |
|
Valve Type |
Butterfly |
|
Media |
Specialty Gases, Liquids, Air, Inert Gas, Water, Air |
|
Stem |
O-ring |
規(guī)格
|
材料 |
316不銹鋼，Buna-N，鑄鐵，球墨鑄鐵，雙相，三元乙丙橡膠，Hastelloy，Monel，超級雙相，Teflon，鈦 |
|
操作溫度 |
*多250 F(120 C) |
|
壓力級 |
ASME |
|
過程連接類型 |
150 RF |
|
閥座/密封式 |
彈性 |
|
關(guān)閉級 |
零泄漏 |
|
標準 |
API 609，ASME B16.34 |
|
閥門尺寸 |
NPS 1/DN 25，NPS 10/DN 250，NPS 1-1/2/DN 40，NPS 12/DN 300，NPS 14/DN 350，NPS 16/DN 400，NPS 18/DN 450，NPS 2/DN 50，NPS 20/DN 500，NPS 2-1/2/DN 65，NPS 3/DN 80 |
|
閥門尺寸標準 |
NPS |
|
閥型 |
蝴蝶 |
|
媒體 |
特種氣體，液體，空氣，惰性氣體，水，空氣 |
|
莖 |
O環(huán) |
Documents & Drawings
文件和圖紙
手冊和指南
手冊：Keystone圖990/991蝶閥，Keystone-en
英語355.8 kb.pdf
手冊：示范代碼增編-Keystone圖990/920，Keystone-en
英語516.9 kb.pdf
Manuals: KEYSTONE F990/991蝶閥, Keystone-ZH
中文 604.7 kb .pdf
美國艾默生（EMERSON）閥門華南服務商-艾凱閥實業(yè)（深圳）有限公司
艾凱閥.艾默生旗下凱斯通閥門-正規(guī)現(xiàn)貨銷售服務渠道
AKVALVE - EMERSON KEYSTONE VALVE - SPOT SALES SERVIC CHANNEL
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