Manufacturer for dairy butterfly valve - MSS SP-71 Cast iron Swing Check Valve – BESTFLOW

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Manufacturer for dairy 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.

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With advanced technologies and facilities, strict quality control, reasonable price, superior service and close co-operation with customers, we are devoted to providing the best value for our customers for Manufacturer for dairy butterfly valve - MSS SP-71 Cast iron Swing Check Valve – BESTFLOW , The product will supply to all over the world, such as: Mauritius, Durban, Saudi Arabia, Our solutions have national accreditation standards for experienced, premium quality goods, affordable value, was welcomed by people around the globe. Our products will continue to increase in the order and look forward to cooperation with you, Truly must any of people goods be of interest to you, make sure you letus know. We're likely to be delighted to give you a quotation up on receipt of one's in depth specs.

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