Pressure gauge globe valve
Pressure gauge globe valve (also known as needle valve) is an important part of instrumentation pipe…
Description：
I. Brief description:
J29W series pressure gauge globe valve (also known as needle valve) is an important part of the instrument measurement pipeline system, which mainly includes globe valve and ball valve. Its function is to open or cut off the pipeline path. Pressure gauge instrument valve has the advantages of convenient installation and disassembly, tight connection, fire protection, explosion proof, high pressure resistance, good sealing performance, etc. It is an advanced connecting valve in power plant, oil refining, chemical equipment and instrument measurement pipeline.
J29W series pressure gauge globe valves have good sealing performance, long service life, even if the sealing surface is damaged, pressure gauge globe valves can continue to use only by replacing vulnerable parts. When installing, the direction of medium flow should be consistent with the direction of arrow on the valve body. Pressure gauge globe valve is a kind of valve which can be accurately adjusted. For example, the knob used for cutting distance to adjust flame temperature is needle valve. Instrument needle valve is an important part of instrument measuring pipeline system. Pressure gauge globe valve mainly includes globe valve and ball valve. Pressure gauge globe valve is used to open or cut off pipeline path.
2. Advantages of pressure gauge globe valve:
1. It is simple in structure and convenient in manufacture and maintenance.
2. Small working journey and short start-up and shut-down time.
3. Good sealing, small friction between sealing surfaces and long service life.
4. The structure of globe valve body is straight through, direct current and right angle. Straight-through structure is the most common structure, but its fluid resistance is the largest. DC fluid has less resistance and is mostly used for fluids with solid particles or high viscosity. The right angle valve body is usually forged, which is suitable for globe valves with smaller pass and higher pressure.
Technical specifications for pressure gauge globe valves:
1. Work pressure: <32MPA;
2. Use temperature: - 20 ~200 C;
3. Specification size: DN5M20*1.5-M20*1.5-DN5M20*1.5-G1/2;
4. Connection form: internal thread connection of pipe joint;
5. Structural characteristics: conical or spherical seal;
6. Valve body material: carbon steel, stainless steel, etc.
7. Applicable media: water, oil, gas and other corrosive and non-corrosive media;
8. Manufacturing standards: GB/T12224-2005, JB/T7747-1995;
9. Valve testing and test standard: GB/T13927-1992.
Fourth, structure and installation matters needing attention:
The structure of globe valve:
The structure of globe valve body is straight through, direct current and right angle. Straight-through structure is the most common structure, but its fluid resistance is the largest. DC fluid has less resistance and is mostly used for fluids with solid particles or high viscosity. The right angle valve body is usually forged, which is suitable for globe valves with smaller pass and higher pressure.
The installation and maintenance of globe valve should pay attention to the following matters:
1. Handwheel and handle operated globe valves can be installed in any position of the pipeline.
2. Handwheels, handles and large-scale mechanisms are not allowed to be lifted.
3. The flow direction of the medium should be the same as the arrow direction shown by the valve body.
V. Main criteria:
1. GB/T 12233-2006 General Valve Iron Globe Valve and Lift Check Valve
2. GB/T 12235-2007 "General Valve Flange Connection Steel Globe Valve and Lift Check Valve"
3. JB/T53174-94 "Quality Classification of Globe Valves"
4. JB/T53165-92 High Pressure Balanced Globe Valve
5. GB/T 587-2008 "Marine Flange Bronze Globe Valve"
6. GB/T 590-2008 "Marine Flanged Cast Iron Globe Valve"
7. GB/T 8464-2008 "Iron and Copper Thread Connection Valves"
8. GB8465.2-87 "Basic Dimensions of Internal Thread Connecting Gate Valve, Globe Valve, Ball Valve and Check Valve Iron Globe Valve"
Sixth, after-sales service commitment:
1. Our company sells Zhongwei globe valve products with quality problems within 12 months, responsible for free maintenance.
2. In case of any quality problems in our products during the warranty period, our company is responsible for free maintenance or replacement.
3. Our company is responsible for repairing and collecting the cost of damaged parts if the user uses them improperly during the warranty period.
4. Our company is responsible for repairing the quality problems of the products after the quality guarantee period, and charges the cost of damaged parts.
5. If users need our company's on-site service, our service staff will arrive at the site within 12 hours for users in the province, and those outside the province will arrive at the site within 48 hours.
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