Hot Sale for PTFE Seated Butterfly Valve - MSS SP-71 Cast iron Swing Check Valve – BESTFLOW
Hot Sale for PTFE Seated Butterfly Valve - MSS SP-71 Cast iron Swing Check Valve – BESTFLOW Detail:
Description
TECHNICAL REQUIREMENT :
● Design and Manufacture Conform to MSS SP-71
● Flange dimensions Conform to ASME B16.1
● Face to Face dimensions Conform to ASME B16.10
● Testing Conform to MSS SP-71
Specification
|
No. |
Part Name |
Material |
|
|
1 |
BODY |
ASTM A126 B |
|
|
2 |
SEAT RING |
ASTM B62 C83600 |
|
|
3 |
DISC |
ASTM A126 B |
|
|
4 |
DISC RING |
ASTM B62 C83600 |
|
|
5 |
HINGE |
ASTM A536 65-45-12 |
|
|
6 |
STEM |
ASTM A276 410 |
|
|
7 |
BONNET |
ASTM A126 B |
|
|
NOTE: Above 6 inch have eyebolt |
|||
m to MSS SP-71
Dimensions data(mm)
|
NPS |
2″ |
2½ |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
14 |
16 |
18 |
20 |
24 |
|
Dn |
51 |
63.5 |
76 |
102 |
127 |
152 |
203 |
254 |
305 |
356 |
406 |
457 |
508 |
610 |
|
L |
203.2 |
215.9 |
241.3 |
292.1 |
330.2 |
355.6 |
495.3 |
622.3 |
698.5 |
787.4 |
914.4 |
965 |
1016 |
1219 |
|
D |
152 |
178 |
191 |
229 |
254 |
279 |
343 |
406 |
483 |
533 |
597 |
635 |
699 |
813 |
|
D1 |
120.7 |
139.7 |
152.4 |
190.5 |
215.9 |
241.3 |
298.5 |
362 |
431.8 |
476.3 |
539.8 |
577.9 |
635 |
749.3 |
|
b |
15.8 |
17.5 |
19 |
23.9 |
23.9 |
25.4 |
28.5 |
30.2 |
31.8 |
35 |
36.6 |
39.6 |
42.9 |
47.8 |
|
n-d |
4-19 |
4-19 |
4-19 |
8-19 |
8-22 |
8-22 |
8-22 |
12-25 |
12-25 |
12-29 |
16-29 |
16-32 |
20-32 |
20-35 |
|
H |
124 |
129 |
153 |
170 |
196 |
259 |
332 |
383 |
425 |
450 |
512 |
702 |
755 |
856 |
Installation of Check Valve
The check valve must be installed at the outlet of the pump and in front of the outlet control valve for maintenance. Generally, the first outlet of the pump is soft connection (shock absorber), followed by check valve, and then block valve (such as butterfly valve, gate valve, stop valve, etc.).
1. Install the check valve first and then the gate valve or butterfly valve
Advantages: it can protect the check valve, especially in parallel pumps. When one pump does not start and the other pump starts, the impact force is borne by the gate valve or butterfly valve
Disadvantages: who will protect gate valve or check valve? There was a case that the valve plate of the butterfly valve was broken.
2. Install gate valve or butterfly valve before check valve
Advantages: it can protect butterfly valve or gate valve, and the impact force is borne by the check valve
Disadvantages: who will protect the check valve? The check valve is opened and closed by pressure difference. If the header pressure is high, it will be closed and the pump pressure will be opened. If the flow used is unstable, the check valve will be opened and closed repeatedly, which will affect the service life of the check valve.
Product detail pictures:
Related Product Guide:
With our leading technology as well as our spirit of innovation,mutual cooperation, benefits and development, we will build a prosperous future together with your esteemed company for Hot Sale for PTFE Seated Butterfly Valve - MSS SP-71 Cast iron Swing Check Valve – BESTFLOW , The product will supply to all over the world, such as: Malta, British, Surabaya, Our company always provides good quality and reasonable price for our customers. In our efforts, we already have many shops in Guangzhou and our products have won praise from customers worldwide. Our mission has always been simple: To delight our customers with best quality hair products and deliver on time. Welcome new and old customers to contact us for the future long term business relationships.
By Mignon from Germany - 2017.12.19 11:10
A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
By Constance from Philadelphia - 2017.09.26 12:12
