High Pressure Casting Stop Valve Structure Features

1. Performance of high pressure casting stop valve: The change in the seat passage of the high pressure casting stop valve is proportional to the valve stroke. The valve stem opening or closing stroke of the high pressure shut-off valve is relatively short, and has a very reliable shut-off...

Product Details

1. Performance of high pressure casting stop valve:

With more than 30 years of casting history, Wenzhou Longzhu   Industrial Co., Ltd. has a large number of experienced casting engineers and   technicians. We can produce castings of various sizes, shapes and materials   according to the drawings provided by customers, especially in the field of   valve castings. Cooperate with Fortune 500 companies for many years.


size:

2”-72”

pressure:

7500psi

Material selection:

GS-C251.0619,WCB.WCC,LCB,LCC,LC3,4C,4D,WC6,C5,C12, C12A,CA15CF3,CF8(-196’C),CF3M,CF8M,CF8C,CD4MCu,CK3MC   uN,ZG200-400,ZG230-450,ZG270-500,2G40Cr1,ZG20CrM0.2G15C   r1Mo1V,ZG35Cr1MO.ZG16CrMOG(1Cr5Mo),ZG1Cr13,ZGOCr18Ni9 Ti.5A.KmTB   Cr26.4A

weight:

3Ton

process:

Resin sand casting, etc.

Wenzhou Longzhu Industrial Co.,Ltd

Sales manager: Mrs.peng             E-mail: sylvia@china-longzhu.com

Tel: 0086-0577-86621768              Fax: 0086-0577-86621935

Address : No.19 Longyong   Road.Xiongxin Village. Longwan,Wenzhou,Zhejiang,China

The change in the seat passage of the high pressure casting stop valve is proportional to the valve stroke. The valve stem opening or closing stroke of the high pressure shut-off valve is relatively short, and has a very reliable shut-off function. Since the change of the seat passage is proportional to the stroke of the valve flap, it is very suitable for adjusting the flow rate. Therefore, this type of shut-off valve type is very suitable for use as a cut-off or adjustment and throttling. Since the stroke between the opening and closing of the valve of the casting stop valve is small, the sealing surface can withstand multiple opening and closing. Therefore, the shut-off valve is suitable for occasions requiring frequent switching and can be used in most media flow systems. Globe valves are widely used in petrochemical, electric power, metallurgy, urban construction, chemical and other industries.

Butterfly valve

2. Structural features of high pressure casting stop valve:

(1) The national standard flange connection, socket welding connection, butt welding connection, thread connection stop valve series are the conventional products designed with reference to the national standard. The cast steel globe valve series products have reasonable structural design, stable performance, reliable quality, convenient installation and operation. Lightweight and flexible.

(2) The sealing surface of the valve disc and the valve seat is sprayed and welded with different hardness of cemented carbide. Reliable sealing, high hardness; wear resistance, high temperature resistance, good scratch resistance and long service life.

(3) The valve stem is heat treated and has good scratch resistance and wear resistance.

(4) A variety of connection types can be used to meet various piping requirements and piping flange standards and flange sealing surface forms to meet various engineering needs and user requirements.

3. Selection of sealing material for high pressure casting stop valve:

Carbon steel globe valve: valve 13Cr, valve seat is WCB + HF, WC6 + HF or LCC + HF, the difference between the two hardness HB ≥ 50. The spray welding process is strictly carried out according to the spray welding process specification.

Stainless steel globe valve: valve disc 304 or 316, valve seat is OCr18Ni9 + HF or OCr17Ni12Mo2+HF, the difference between the two hardness HB ≥ 50. The valve disc and seat sealing surface have high hardness and good anti-scour performance and corrosion resistance. The spray welding process is strictly carried out according to the spray welding process specification.

stainless steel Check valve

4. High pressure casting stop valve material:

4.1 valve body, valve cover, material is WCB, WC6, LCC, OCr18Ni9 or OCr17Ni12Mo2. The above valve materials are strictly selected in accordance with GB/T12224 General Requirements for Steel Valves and relevant valve material standards, and the service life is guaranteed. The casting materials meet the standard requirements stipulated in GB/T12229 Technical Conditions for General Valve Carbon Steel Castings, GB/T12230 Technical Conditions for General Valve Stainless Steel Castings and JB/T7248 Technical Conditions for Low Temperature Steel Castings for Valves. The steel castings are heat treated according to the standard requirements, and the mechanical properties meet the standard requirements. Non-destructive testing of pressure-bearing steel castings is carried out. The standard is JB/T6440 “Telegraphic inspection of pressure-bearing steel castings for valves”. All pressure forgings meet the requirements specified in JB4726 ~ 4728 Steel Forgings for Pressure Vessels. All reports are archived for acceptance of the buyers inspection during valve production.

4.2 The stem material is 13Cr, 304 or 316. The stem material is chemically analyzed according to the relevant valve standard, mechanical performance report (tensile test, hardness test), heat treatment as required, and phase report. All reports are archived for acceptance of the buyers inspection during valve production.

5. Inspection and testing of high pressure casting stop valves

5.1 Test standard

The inspection and test of the valve are performed in accordance with JB/T9092 and GB/T12224 standards. The shell pressure test is performed before the valve surface is treated and painted.

5.2 The valve shall be subjected to a 100% pressure test before leaving the factory. The valve pressure test shall include at least the following contents.

- Shell test, upper seal test, low pressure gas seal, high pressure water seal test, other tests specified in the specification.

5.3 After testing, drain the test medium inside the valve body.

5.4 All butt welds are 100% X-ray tested. For the pressure bearing parts of PN160 and above, X-ray inspection is carried out according to JB/T6440.

5.5 The product user has the right to inspect it as needed.


With more than 30 years of casting history, Wenzhou Longzhu   Industrial Co., Ltd. has a large number of experienced casting engineers and   technicians. We can produce castings of various sizes, shapes and materials   according to the drawings provided by customers, especially in the field of   valve castings. Cooperate with Fortune 500 companies for many years.


size:

2”-72”

pressure:

7500psi

Material selection:

GS-C251.0619,WCB.WCC,LCB,LCC,LC3,4C,4D,WC6,C5,C12, C12A,CA15CF3,CF8(-196’C),CF3M,CF8M,CF8C,CD4MCu,CK3MC   uN,ZG200-400,ZG230-450,ZG270-500,2G40Cr1,ZG20CrM0.2G15C   r1Mo1V,ZG35Cr1MO.ZG16CrMOG(1Cr5Mo),ZG1Cr13,ZGOCr18Ni9 Ti.5A.KmTB   Cr26.4A

weight:

3Ton

process:

Resin sand casting, etc.

Wenzhou   Longzhu Industrial Co.,Ltd

Sales manager Mrs.peng             E-mail: longzhu@china-longzhu.com

Tel 0086-0577-86621768              Fax 0086-0577-86621935

Address No.19 Longyong   Road.Xiongxin Village. Longwan,Wenzhou,Zhejiang,China

Hot Tags: high pressure casting stop valve structure features, suppliers, brands, customized, quotation, buy, best, low price

Inquiry

You Might Also Like