成人免费观看网欧美片-成人免费观看视频-成人免费观看男女羞羞视频-成人免费观看的视频黄页-成人免费高清视频-成人免费福利片在线观看

300X slow closing check valve

300X slow closing check valve
  • sell:021-32051999
  • sell:021-32050777
  • fax:021-66099555

Details

  • Product Introduction
  • Service Promise
  • Ordering Process

The 300X slow-closing check valve consists of main valve, one-way valve, needle valve, ball valve, micro-filter and pressure gauge. Using hydraulic automatic operation, the main valve can get the best opening or closing speed. To prevent the water hammer from hitting, we can achieve the effect of slow closing and silencing.

This product uses hydraulic self-control, does not need other devices and energy, easy maintenance, open and slow shut smoothly.

This series of valve products are widely used in high-rise buildings, living areas and other water supply network systems and urban water supply projects.

Working principle

When the valve feeds water from the inlet, the water enters the main valve control room through a micro filter, a needle valve and a one-way valve, and then drains downstream through a ball valve. Because the needle valve opening is less than the ball valve opening, that is, the main valve control room drainage speed is greater than the water intake speed, so the control room pressure reduces, acting on the lower end of the main valve disc inlet pressure open the main valve downstream water supply.

When the pipeline stops water supply, if the downstream water begins to flow back, part of the backflow water enters the main control room through the ball valve. Because of the unidirectional valve, the backflow water can not flow out of the main control room, causing the main control room to gradually pressurize, slowly closing the main valve.

Main technical parameters

公稱壓力(Mpa)
殼體試驗壓力(MPa)
密封試驗壓力(MPa)
適用介質(zhì)
介質(zhì)溫度(℃)
1.0
1.5
1.1
0-80
1.6
2.4
1.76
2.5
3.75
2.75


主要零件材料


零件名稱
零件材料
閥體 閥蓋
WCB
閥座 閥盤
銅合金
密封圈 O型圈
丁腈橡膠
閥桿
2Cr13
彈簧
50CrVA
針型閥
銅合金
球閥
銅合金
浮球閥
銅合金
微型過濾器
不銹鋼


部件列表
1、針閥2、主閥3、球閥4、壓力表5、單向閥
主要外形連接尺寸


DN
L
A
A1
H
H1
F
D
mm
D1
mm
D2
mm
n-Φd
mm
mm
mm
mm
mm
mm
PN1.0
PN1.6
PN2.5
PN1.0
PN1.6
PN2.5
PN1.0
PN1.6
PN2.5
PN1.0
PN1.6
PN2.5
20
180
282
200
172
106
116
105
105
105
75
75
75
58
58
56
4-13.5
4-13.5
4-14
25
180
282
200
172
106
116
115
115
115
85
85
85
68
68
65
4-13.5
4-13.5
4-14
32
180
282
200
172
106
116
140
140
140
100
100
100
78
78
76
4-17.5
4-17.5
4-18
40
240
320
210
265
210
170
150
150
150
110
110
110
88
88
84
4-17.5
4-17.5
4-18
50
240
320
210
265
210
170
165
165
165
125
125
125
102
102
99
4-17.5
4-17.5
4-18
65
250
330
215
310
215
180
185
185
185
145
145
145
122
122
118
4-17.5
4-17.5
8-18
80
285
350
220
350
245
210
200
200
200
160
160
160
133
133
132
8-17.5
8-17.5
8-18
100
360
410
230
460
305
275
220
220
235
180
180
190
158
158
156
8-17.5
8-17.5
8-22
125
400
420
245
520
365
310
250
250
270
210
210
220
184
184
184
8-17.5
8-17.5
8-26
150
455
430
260
570
415
355
285
285
300
240
240
250
212
212
211
8-22
8-22
8-26
200
585
440
280
695
510
460
340
340
360
295
295
310
268
268
274
8-22
12-22
12-26
250
650
450
300
780
560
500
395
405
425
350
355
370
320
320
330
12-22
12-26
12-30
300
800
460
320
902
658
580
445
460
485
400
410
430
370
370
389
12-22
12-26
16-30
350
860
470
340
1025
696
640
505
520
555
460
470
490
430
430
448
16-22
16-26
16-33
400
960
480
360
1080
735
715
565
580
620
515
525
550
482
482
503
16-26
16-30
16-36
450
1075
530
395
1030
610
780
615
640
670
565
585
600
532
550
548
20-26
20-30
20-36
500
1075
580
420
1135
665
830
670
715
730
620
650
660
585
585
609
20-26
20-33
20-36
600
1230
600
445
1270
725
920
780
840
845
725
770
770
685
685
720
20-30
20-36
20-39
700
1650
730
495
1460
865
980
895
910
960
840
840
875
800
800
820
24-30
24-36
24-42
800
1750
830
530
1640
925
1050
1015
1025
1085
950
950
990
905
905
928
24-33
24-39
24-48


安裝示意圖

The best quality, first-class service Qigao creates more value for you!

"Qigao Valve" expects to continuously improve service quality and strive for excellence. "Sincere service" is the eternal theme of "Qigao". "Qigao" strictly followsIS09001-2000 Quality system certification requirements, strict quality control, responsibility to people, to ensure the healthy operation of production, sales and service. Strengthen communication with users and provide quality products to our customers with perfection and perfect service. Hereby our factory makes the following commitments:

Product Standards:

Products in strict accordance with ChinaGB、HG Standard and USAPISuch as standard design, manufacturing, acceptance. The hardness of the sealing surface meets the requirements of the state and the width exceeds the national standard.

pre-sale service:

Product introduction, technical exchange, non-standard product design, troubleshooting。

Sale service:

A trustworthy contract guarantees timely delivery and keeps in touch with customers. For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.

After sales service:

1、"Qigao" brand product quality period is from the factory12In the month, the implementation of the "three guarantees" service (return, replacement, warranty).

2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions, so as to further improve product quality.

3、Respond quickly to the quality of user complaints, after-sales service personnel rushed to the scene in 24-36 hours (48 hours outside the province).

4、For after-sales service, users are required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of Qigao.

1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:

a、Structure length;

b、Connection Type;

c、Nominal diameter, full diameter, reduced diameter, pipe size;

d、Operating medium and temperature, pressure range;

e、Tests, inspection standards and other requirements

2、The factory can configure various types of driving devices according to customer's specific requirements.。

3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.

4、For futures and order customers, please call us in advance to tell the required valve model, specification, quantity, delivery time and location, and timely transfer to the factory account according to the total 30% deposit or full payment. The rest of the payment is pending. Import before shipment to arrange delivery in time.

 

Order Process:

1、Customer purchase list fax to021-33872143,Or call us 021-33872141

2、Receive customer purchase list, provide valve model selection and quotation (price list)。

3、Specific agreement: delivery date, special requirements, etc.。

download Google:

1、If the customer has special requirements for the product, the following instructions must be provided in the order contract.:

a、Structure length;

b、Connection Type;

c、Nominal diameter, full diameter, reduced diameter, pipe size;

d、Operating medium and temperature, pressure range;

e、Tests, inspection standards and other requirements

2、The factory can configure various types of driving devices according to customer's specific requirements.。

3、If the type and model of the valve are determined by the customer, the customer shall correctly state the meaning and requirements of the model and sign the contract under the condition that the supplier and the buyer understand each other.

4、For futures and order customers, please call us first to tell the required valve model, specifications, quantity, delivery time and location, and press the total30%The deposit or full payment will be remitted to our factory account in time., The rest of the payment will be remitted before shipment to arrange delivery in time.。

Sale service:

Trustworthy contract, guarantee timely delivery, keep in touch with customers at any time。

For special or duplicate products, our factory arranges technicians to use and troubleshoot the products for users.

After sales service:

1、"Qigao" product quality period is from the factory12Month, practiceThree packsService (return, replacement, warranty)。

2、During the use of our products, our factory regularly organizes technical and quality inspection personnel to visit and consult users for feedback on product quality, usage status and improvement opinions.,
In order to further improve product quality。

3、Respond quickly to the quality of user complaints, after-sales service personnel24-36Hours (outside the province48Hour) rushed to the scene。

4、For after-sales service, the user is required to fill out the quality feedback information form after the service and make an appraisal opinion in order to improve the service quality of “Qigao”.。

statement

  1. All text, data and pictures in this article are for reference only.300X slow closing check valvePlease contact us at 4000-700-665 for details of performance, size and price.
  2. If there is no explanation, this article is original, reprint, please indicate the address of this article, thank you for your cooperation!
偷窥 性别 瘾 XXXXX| 手机看片AV永久免费无| 色噜噜狠狠色综合日日| 亚洲AⅤ无码牛牛影视| 亚洲最刺激成人无码| JAPANESE五十路熟妇| 国产AV夜夜欢一区二区三区| 极品妇女扒开粉嫩小泬| 免费看的WWW哔哩哔哩 | 丰满岳乱妇在线观看中字| 国产亚洲成AⅤ人片在线观看蜜桃 国产亚洲成AⅤ人片在线观看麻豆 | 制服 丝袜 人妻 专区一本| 不知火舞和三个小男孩| 国内精品久久久久影院优| 麻花豆传媒剧国产MV在线上-| 日韩大片高清播放器| 亚洲Av无码成人黄网站在线| 中文AV无码人妻一区二区三区| 成人国产亚洲精品A区天堂| 国内精品自产拍在线观看| 蜜臀AV一区二区三区四区| 色欲AV国产精品一区二区| 亚洲精品宾馆在线精品酒店| AV天堂午夜精品一区| 国产乱子夫妻XX黑人XYX真爽| 老妇乱强伦XXXXX| 51久久精品人人搡人人玩| 一本一本久久AA综合精品| 亚洲国产精品久久青草无码| AV无码天堂一区二区三区| 国产精品美女久久久网站动漫| 久久久久 亚洲 无码 AV 专| 日本肉体裸交XXXXBBBB| 亚洲国产AV无码男人的天堂| AV无码小缝喷白浆在线观看| 国产亚洲精品视觉盛宴| 欧美肉体裸交做爰XXXⅩ性| 婷婷俺也去俺也去官网| 四川丰满少妇A级毛片| 亚洲中文字幕无码第一区| 粗大的内捧猛烈进出| 久久精品人妻中文系列葵司| 色欲色香天天天综合VVV| 英语老师没戴套让我C了一节课 | 欧美日韩免费专区在线| 亚洲AV无码乱码国产精品老妇| AⅤ中文字幕不卡在线无码| 国模无码一区二区三区不卡| 人成乱码一卡二卡三四卡五卡六卡| 亚洲AV综合色区无码一区| 把腿张开老子CAO烂你NP皇宫| 精品人妻大屁股白浆无码| 少妇厨房愉情理伦片BD在线观看 | 久久亚洲日韩成人无码导航| 无码av无码免费一区二区毛片| 18禁真人床震无遮挡免费| 国产真人无码作爱免费视频| 日本边添边摸边做边爱喷水| 一女多男双修NP古言| 国产猛男GAY1069视频| 人久久精品中文字幕无码小明47 | 五十路丰满熟女av名单大全| CHINA中国人妻VIDEO| 精品无码久久久久久久久水蜜桃| 少洁白妇无删减全文阅读| 99精品视频在线观看免费| 黑人巨大两根一起挤进| 日本在线视频WWW色| 真实差差差无掩盖视频30分钟| 国精产品 自偷自偷| 色橹橹欧美在线观看视频高清| 43417大但人文艺术| 精品亚洲成A人片在线观看| 我的大胸继拇在线观看| JIZZJIZZ日本高潮喷水| 老肥熟妇丰满大屁股在线播放| 亚洲AV无码一区二区少妇 | 中文在线最新版天堂| 精产国品一二二线三线区别| 天天做日日做天天添天天欢公交车| FREEFR性中国少妇性HD| 拒嫁豪门少奶奶99次出逃| 亚洲成a人蜜臀AV在线播放| 国产精品成人99久久久久| 日本欧美大码A在线观看| 47147人文艺术欣赏| 久久久久亚洲AV无码观看| 亚洲AV永久无码精品秋霞电影影| 国产成人无码A区在线观看视频免| 欧洲无人区卡一卡二卡三| 中文字幕人妻丝袜乱一区三区| 久爱WWW成人网免费视频| 亚洲AV无码一区二区三区大黄瓜 | 婷婷五月综合激情| 成年美女黄网站18禁免费| 欧美极品少妇做受| 18禁裸乳无遮挡免费网站| 久久躁夜夜躁天天躁| 亚洲色大情网站WWW| 激情五月色综合国产精品| 性VODAFONEWIFI另类| 国产精品99久久久久久人| 色翁荡息又大又硬又粗视频| 被按摩的人妻中文字幕BD| 欧美乱大交XXXXX| 97国产精华最好的产品有哪些| 麻豆国产一卡二卡三卡| 伊人色综合久久天天小片| 久久久精品午夜免费不卡| 亚洲色成人网站www观看入口| 国内一区二区三区香蕉AⅤ| 小浪货腿打开水真多真紧| 国产美女被遭高潮免费网站| 无码任你躁久久久久久久| 国产精品成人影院久久久| 无码人妻精品一区二区三区东京热| 国产成人牲交在线观看视频| 特级毛片全部免费播放| 国产成人亚洲综合A∨| 无码人妻久久久一区二区三区| 国产成人乱色伦区小说| 同学要做吗PO爱喝花茶的小酥肉| 国产成人丝袜视频在线观看| 婷婷五月花丁香综合| 国产精品国产高清国产AV| 无码人妻一区二区三区免费视频| 国产精品视频色拍拍| 亚洲 精品 制服 校园 无码| 国精品99久9在线 | 免费| 亚洲成在人线AV品善网好看| 精品国产一区二区三区吸毒| 亚洲一区二区自偷自拍另类| 久久婷婷大香萑太香蕉AV人| 在线观看日本亚洲一区| 你的奶好大让老子摸摸的说说| CSGO白嫖网站| 日本熟妇厨房XXXXX乱| 公车上玩弄白嫩少妇| 无码欧亚熟妇人妻AV在线外遇| 国产性天天综合网| 亚洲乱色熟女一区二区三区蜜臀| 久久久久久久久久久综合日本| 在线精品国产一区二区三区| 欧美人与性动交XXⅩXX| 第一福利视频500| 无码人妻丰满熟妇啪啪| 狠狠躁夜夜躁人人躁婷婷视频| 亚洲一区二区三区成人网站| 男人一生最吉利的网名| 播放灌醉水嫩大学生国内精品 | 免费无码又爽又刺激激情视频 | 国内自产少妇自拍区免费| 亚洲一本到无码AV中文字幕| 免费看又黄又爽又猛的视频| 被下春药爽翻天按摩的人妻| 天天做天天爱夜夜爽毛片毛片| 国产无人区卡一卡二卡乱码 | 精品无人区卡卡卡卡卡二卡三乱码| 伊人久久大香线蕉AⅤ色| 欧美丰满少妇人妻精品| 荡公乱妇HD电影中文字幕| 小妖精含牢了我喂饱你| 久久久久琪琪去精品色无码| A级毛片内射免费视频| 他的舌头探进蜜源毛毛虫说说 | 欧美人与动牲交A免费| 国产 熟女 高潮 www| 亚洲成在人线AⅤ中文字幕 | 天堂А√中文在线官网| 禁止18点击进入在线看片尤物| 自拍偷自拍亚洲精品被多人伦好爽| 日本老熟妇wwwbbb| 国产午夜亚洲精品国产成人小说 | 亚洲AV无码成人精品区浪潮AV| 久久丫精品国产亚洲AV| 边做饭边被躁BD小说| 亚洲AV成人无码久久精品| 乱码精品一卡2卡二卡三| 波多野结衣无码中文字幕18禁| 亚洲 小说 欧美 激情 另类| 免费AV片大尺度在线观看| 丰满少妇人妻无码专区| 亚洲欧美在线一区中文字幕| 欧洲乱码伦视频免费| 国产一区二区三区不卡在线观看| 中文字幕精品亚洲人成在线| 少妇无码一区二区二三区| 久久99久国产精品66| 草草浮力影院禁止18进入| 亚洲AV无码成人| 欧美一区二区在线视频人妻| 国产精品无码久久久久| 中文午夜人妻无码看片| 熟妇大屁股一区二区三区视频| 久久精品国产亚洲精品2020| 短裙公车被直接进入| 一本大道久久香蕉成人网| 天堂√在线中文官网在线| 美女扒开屁股让男人桶GIF动态| 国产成人综合日韩精品无码|