Stainless steel forged steel check valve-Forged steel valve series-锻钢阀厂家-上海冠环阀门制造有限公司

Product Overview

The American standard forged steel flange check valve disc and seat sealing surface are made of cobalt based hard alloy plasma spray welding, which has high hardness, erosion resistance, and durability. Suitable for cutting or connecting media on pipelines under various operating conditions such as petroleum, chemical, hydraulic, and thermal power plants with a working temperature of 600 ℃. Applicable media include water, oil, steam, gases, and certain corrosive liquids.

Operational Principle

The forged steel flange check valve disc and seat sealing surface are made of iron based alloy or Stellite cobalt based hard alloy surfacing, which is characterized by wear resistance, high temperature resistance, corrosion resistance, good scratch resistance, and long service life. The connection between the stainless steel pin shaft and the valve disc adopts an internal structure with excellent performance and more reliable sealing. The product is widely used in various working conditions such as petroleum, chemical, pharmaceutical, and power industries to prevent medium backflow in pipelines. Applicable media include water, oil, steam, gas, and certain corrosive liquid media.

Standard Material List

Product Features

1. The guide rib is welded with hard alloy, and the guide sleeve of the upper chamber of the valve body is made of stainless steel material to ensure flexible valve disc movement.

2. The sealing surface of the valve disc and valve seat is made of cobalt based hard alloy plasma spray welding, which has high hardness, erosion resistance, and durability.

3. Pressure seal design and high-purity graphite gasket ring to ensure high air tightness.

4. The inner chamber of the valve adopts a pressure self tightening sealing structure, and the higher the inner chamber pressure, the better the sealing performance.

5. The valve disc rotates around the pin axis outside the valve seat, reducing the violent impact that occurs during closure.

Main connection dimensions and weight

NPS			1/2	3/4	1	11/4	11/2	2
L(RTJ) L1(BW)	150		108	117	127	140	165	203
	300		152	178	203	216	229	267
	600		165	190	216	229	241	292
H	150,300		61	61	79	95	103	118
H	600		61	79	95	103	118	135
Weight	150	RTJ	2.56	3.37	4.37	8.17	8.94	12.64
	150	BW	1.70	1.90	2.10	5.12	5.50	7.89
	300	RTJ	2.73	3.65	4.74	8.77	9.60	13.70
	300	BW	1.90	2.10	3.00	5.12	6.60	7.85
	600	RTJ	3.00	4.00	5.83	9.47	10.10	15.6
	600	BW	2.00	3.12	4.25	7.25	8.56	13.60