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E-mail
76228885@qq.com
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Phone
15821339995
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Address
Jinshan Industrial Zone, Shanghai
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Shanghai Shuangheng Valve Manufacturing Co., Ltd
J29H needle valve
NegotiableUpdate on 01/08
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Overview
1、 J29H Needle Valve Product Overview The J29H pressure gauge needle valve produced by Shanghai Shuangheng Valve Co., Ltd. is a valve that can be precisely adjusted and has a wide range of applications, such as the cutting distance for flame cutting and the knob for adjusting flame temperature. Instrument needle valve is an important component of the instrument measurement pipeline system. Suitable for water, oil products, steam, petroleum gas, etc. The J29H pressure gauge needle valve can withstand greater pressure and has better sealing performance than other types of valves, so it is generally used for sealing gas or liquid media with lower flow rates and higher pressures The combination of needle valve shape and pressure gauge is the most suitable The general needle valve shape is made into a threaded connection. Firstly, the anti-corrosion of the valve body mainly depends on the correct selection of materials. Although there is a wealth of information on corrosion prevention, it is still not easy to choose the right one because the problem of corrosion is very complex. The outer surface of the needle valve body is also subjected to atmospheric corrosion, and generally steel materials are protected by painting.
Product Details
1、 J29H Needle Valve Product Overview
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The J29H pressure gauge needle valve produced by Shanghai Shuangheng Valve Co., Ltd. is a valve that can be precisely adjusted and has a wide range of applications, such as the cutting distance for flame cutting and the knob for adjusting flame temperature. Instrument needle valve is an important component of the instrument measurement pipeline system. Suitable for water, oil products, steam, petroleum gas, etc. The J29H pressure gauge needle valve can withstand greater pressure and has better sealing performance than other types of valves, so it is generally used for sealing gas or liquid media with lower flow rates and higher pressures The combination of needle valve shape and pressure gauge is the most suitable The general needle valve shape is made into a threaded connection. Firstly, the anti-corrosion of the valve body mainly depends on the correct selection of materials. Although there is a wealth of information on corrosion prevention, it is still not easy to choose the right one because the problem of corrosion is very complex. The outer surface of the needle valve body is also subjected to atmospheric corrosion, and generally steel materials are protected by painting. |
2、 J29H needle valve product model and picture
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J29H needle valve
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3、 J29H needle valve material
| Part Name Part name |
valve stem Stem |
valve body Body |
Valve base Base |
filler Packing |
Packing valve cover Packing |
bonnet handwheel |
|---|---|---|---|---|---|---|
| Handwheel | J29H-320-DN3 carbon steel |
Carbon steel Chromium stainless steel |
Cr. Stainless steel Polytetrafluoroethylene, flexible graphite |
PTFE，Soft graphite | Carbon steel high-quality carbon steel |
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| High grade carbon steel | J29H-320P-DN6 Chromium nickel stainless steel |
Cr. Ni Stainless steel Chromium stainless steel |
Cr. Stainless steel Chromium nickel stainless steel |
Cr. Ni Stainless steel | ||
Stainless steel
| 4、 Performance Specification for J29H Needle Valve model |
Type Nominal Pressure |
PN Mpa | Test pressure PS (Mpa) | Work pressure (Mpa) | Operating temperature (OC) | ||
|---|---|---|---|---|---|---|---|
| Applicable Medium | Shell shell | Seal (liquid) | |||||
| Seal (gas) | 32.0 | 48.0 | 35.2 | 0.6 | 32.0 | J29H-320 | P≤540OC |
| Liquefied petroleum gas, water, acid, steam, oil products, etc | 32.0 | 48.0 | 35.2 | 0.6 | 32.0 | J29H-320P | |
C≤425 OC
| 5、 External connection dimensions of J29H needle valve model |
Type | Nominal diameter DN (mm) | Dimensions Weight (kg) |
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|---|---|---|---|---|---|---|---|---|---|---|
| Weight | L1 | D1 | D2 | L2 | H | H1 | M1 | |||
| M2 | 3 | 60 | 65 | 50 | 65 | 85 | 93 | J29H-320 | M14×1.5 | 1.0 |
| M20×1.5 | 6 | 60 | 65 | 50 | 65 | 85 | 93 | J29H-320P | M14×1.5 | 1.0 |
M20×1.5
6、 Installation precautions for J29H needle valve
1. The installation position, height, and inlet/outlet direction must meet the design requirements, and the direction of medium flow should be consistent with the arrow direction marked on the valve body. The connection should be firm and tight.
2. Before installing the valve, a visual inspection must be conducted, and the valve nameplate should comply with the current national standard "General Valve Marking" GB 12220. For valves with a working pressure greater than 1.0 MPa and a shut-off function on the main pipeline, strength and tightness tests should be conducted before installation, and they can only be used after passing the tests. During the strength test, the test pressure shall be 1.5 times the nominal pressure, and the duration shall not be less than 5 minutes. The valve shell and packing shall be qualified if there is no leakage. During the tightness test, the test pressure is 1.1 times the nominal pressure; The duration of the experiment meets the requirements of GB 50243.
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