
En558 Wafer Type Brass Aluminum Bronze Dual Plate Check Valves for Sea Water
Product Introduction
We strive to promote the rapid development of the company in a new starting point to achieve new breakthroughs, and lay a good foundation for the company to become an excellent manufacturer of providing Industrial Pipe Fittings Tee Cross, Steel Globe Valve Russian, Gate Valve For Oil Water with characteristics. While doing well in our main business, we will further develop related industries and extend the enterprise industrial chain. Hope we can make progress together, seek common development and meet opportunities and challenges together. We are dedicated to providing our customers with all the support and security beyond our core business. We have always adhered to and fulfilled our commitment to the majority of groups in need, that is, we must provide high-quality products.



Main parts and materials
Type | valve |
Valve disc | Spring |
H71H-16Q H71H-25Q | QT400-15 | 25 | 50CrVA |
H71W-25H H71W-40H | 2Cr13 | 1Cr13 | 1Cr18Ni9 |
H71W-25P H71W-40P | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | 1Cr18Ni9Ti |
Performance specification
Type | Nominal pressure | Test pressure | Working temperature | Applicable temperature | |
| Housing | Seal up | ||||
H71H-16Q | 1.6 | 2.4 | 1.76 | ≦235℃ | Water, steam,oil |
H71H-25Q H71W-25H | 2.5 | 3.75 | 2.75 | ≦235℃ ≦300℃ | |
H71W-25P | ≦200℃ | Nitric acid and other corrosive media | |||
H71W-40H | 4.0 | 6.0 | 4.4 | ≦300℃ | |
H71W-40P | ≦200℃ | Water, steam | |||
Main outer size
Nominal diameter | D | |||
DN | L | 1.6 | 2.5 | 4.0 |
15 | 25 | 48 | 48 | 48 |
20 | 31.5 | 58 | 58 | 58 |
25 | 35.5 | 68 | 68 | 68 |
32 | 40 | 80 | 80 | 80 |
40 | 45 | 90 | 90 | 90 |
50 | 56 | 105 | 105 | 105 |
65 | 63 | 125 | 125 | 125 |
80 | 71 | 140 | 140 | 140 |
110 | 80 | 160 | 165 | 165 |
125 | 110 | 190 | 195 | 195 |
150 | 125 | 215 | 225 | 225 |
200 | 160 | 270 | 285 | 390 |
250 | 200 | 330 | 340 | 350 |
300 | 250 | 385 | 400 | 415 |
Product Description:
Materials are usually: cast steel, cast iron, alloy steel, stainless steel, CF8 (m), CF3 (m). Forged steels include A105, f304 (L), f316l, etc.
Function of check valve: to ensure the directional flow of medium in the pipeline without backflow. The bottom valve of water pump suction pipe also belongs to check valve.
Application:
in the pipeline of petroleum, chemical, pharmaceutical, chemical fertilizer, electric power industry and other working conditions, the suitable medium is water, oil, steam, acid medium, etc.
Price:Our price fluctuates with raw materials and exchange rate.Please leave your contact information and give you a new quotation as soon as possible.
Packing: wooden case, wooden pallet or packing method specified by customers.
FQA:
What are the structural characteristics of swing check valve?
There are 9 structural features of swing check valve
1). The length of the structure is short, which is only 1 / 8~ 1 / 4 of that of the traditional flange check valve
2). Small size, light weight, its weight is only 1 / 20 ~ 1 / 4 of the traditional flange check valve
3). The valve disc closes quickly and the water hammer pressure is small
4). Horizontal or vertical pipe can be used, easy to install
5). The flow channel is smooth and the fluid resistance is small
6). Good sealing performance, sensitive action
7). The disc stroke is short and the valve closing impact is small
8). Overall structure, simple and compact, beautiful shape
9). Long service life and high reliability
We've been committed to offering easy, time-saving and money-saving one-stop purchasing service of consumer for En558 Wafer Type Brass Aluminum Bronze Dual Plate Check Valves for Sea Water. You should contact us right away! Our company will create more and greater value for domestic and foreign customers with professional technology, fast speed and sincere service, grow together with customers, and welcome the arrival of the new era together.
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