J23W external thread threaded needle valve high temperature and high pressure stainless steel globe valve

J23W External Thread Thread Needle Valve Product Introduction

J23W external thread needle valve is a high-precision regulating and shut-off valve widely used in instrument measurement pipeline systems and high-pressure fluid control scenarios. Its core structural characteristics arePrecise fit between conical valve core and valve seatBy rotating the handwheel, the flow rate can be fine tuned and the passage can be opened and closed, which has the characteristics of high pressure resistance and excellent sealing performanceThe following will explain the product model, technical parameters, structural materials, application fields, and other aspects.

Installation and maintenance characteristics of J23W external thread needle valve

Connection method and operation specifications

connection typeSupport external threads (such as M30 × 2, M36 × 2) and butt welding connections. During installation, ensure that the flow direction of the medium is consistent with the arrow on the valve body.

Assembly requirementsIt is strictly prohibited to use sealant and only light lubricating oil is allowed to be applied; The thread engagement length shall not be less than 1.4 times the diameter of the valve stem.

Maintain convenience and durability

Replacement of vulnerable partsAfter the sealing surface is damaged, the valve disc or packing can be replaced separately, without the need to replace the valve as a whole, reducing maintenance costs.

service lifeStainless steel material has excellent corrosion resistance, combined with the high temperature resistance of flexible graphite packing, making it suitable for long-term continuous working conditions.

J23W external thread threaded needle valve is a commonly used valve in instrument measurement pipeline systems, whose main function is to open or cut off pipeline passage. The working principle of this valve is similar to that of a globe valve, and its core component is a needle shaped cone with a conical sealing surface design. The valve core moves up and down along the centerline of the fluid to control the opening and closing of the valve or adjust the opening degree. When it is necessary to close the valve, rotate the handwheel clockwise and thread the valve stem to slowly press the needle valve core towards the end face of the valve seat, thereby achieving sealing; When it is necessary to open the valve, turn the handwheel counterclockwise, and the valve core will slowly move away from the valve seat to achieve the purpose of opening.

In addition, the J23W external thread needle valve has the characteristics of easy installation and disassembly, tight connection, good fire prevention, explosion prevention, high pressure resistance, and good sealing performance. It is designed with lower torque, making it easier to operate. There is no leakage during valve stem operation, thanks to PTFE or flexible graphite sealing pressure devices. At the same time, the valve also has the advantages of compact structure, beautiful appearance, and flexible use.

Core product features of J23W external thread threaded needle valve

1、 Structural design and functional characteristics for multi scenario adaptation

• High precision flow control capabilityAs a key component of the instrument measurement pipeline system, its needle shaped structure can achieve precise adjustment of fluid flow, suitable for scenarios such as flame cutting that require precise control.

• Dual function integrated designCombining the functions of a globe valve and a ball valve, it can be directly used to open or cut off pipeline pathways, simplifying system pipeline design.

• Sealing performance optimizationAdopting a conical sealing and floating valve disc structure, reliable sealing is achieved between the valve seat and disc through a hardness difference. At the same time, the depth of the packing box meets the installation requirements of at least 6 circles of ordinary packing or 3 circles of PTFE formed packing, ensuring no leakage under high pressure conditions.

2、 Wide range of material and pressure adaptability

• Diversified material selectionProvide materials such as carbon steel and stainless steel (such as chromium nickel stainless steel and chromium stainless steel) according to different models, suitable for various corrosive and non corrosive media such as liquefied petroleum gas, acid, steam, and oil products.

• Adaptability to high pressure working conditionsCovering the nominal pressure range of PN2.5 to PN420MPa, the J23W-420P model shell has a test pressure of 63.0MPa and a working pressure of 46.2MPa, meeting the requirements of high-pressure scenarios.

• Wide temperature tolerance rangeStainless steel material models are suitable for temperatures ≤ 200 ℃, while carbon steel material models can withstand up to 425 ℃ and can cope with complex working conditions such as high temperature steam.

3、 Standardized Manufacturing and Safety Standards

• Strictly follow industry standardsThe design and manufacturing comply with GB/T12224-1989 and JB/T7747-1995 specifications. The valve body and valve cover adopt integral or split structure, and the threaded length of the valve stem is not less than 1.4 times the diameter to ensure structural strength.

• Safety operation signsThe handwheel is clearly marked with a clockwise closing direction arrow and a 'close' symbol, and the rim is equipped with a two-way indicator for opening/closing to avoid accidental operation.