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Needle-Valve-Stainless.Steel-NPT

Needle-Valve-Stainless.Steel-NPT

Needle-Valve-Stainless.Steel-NPT

Product catalog summary
Specifications:
The stainless steel needle valve PN 400 F/F is designed with a rotating rising stem and a reduced bore. It is a one-piece type made from SS ASTM A351 CF8M material. The valve is available in sizes ranging from DN 1/4" to 1" with female BSP or NPT ends. It operates within a temperature range of -20°C to +180°C and can withstand a maximum pressure of 400 bars (6000 Psi).

Usage:
Suitable for common fluids of the 2nd group, the valve should be used within the specified temperature and pressure limits. The flow direction is indicated by an arrow on the valve.

Pressure/Temperature Graph:
The document includes a pressure/temperature graph, excluding steam, and provides flow coefficients (Kvs) for different DN sizes.

Range and Materials:
The valve range includes stainless steel threaded female BSP cylindrical (Ref. 481) and NPT (Ref. 487) from DN 1/4" to DN 1". Key materials include ASTM A351 CF8M for the body, ASTM A240-304 for the bonnet and stem, PTFE for packing, and SS 304 for various components.

Dimensions:
Detailed dimensions are provided for different DN sizes, including length, height (closed and opened), width on flat, and weight.

Standards:
The valve is fabricated according to ISO 9001:2008 and tested per API 598. It complies with various threading standards and directives, including ATEX Group II Category 2 G/2D.

Installation Instructions:
General guidelines emphasize ensuring compatibility with installation conditions, proper alignment of connecting pipes, and avoiding excessive strain on the valve. Specific instructions include cleaning pipes before installation, limiting thread length, and avoiding the use of tools to shut the valve. Regular operation (open and close) is recommended 1 to 2 times per year to maintain functionality.
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Catalog excerpts

Needle-Valve-Stainless.Steel-NPT-1

MXT-222-481-487 STAINLESS STEEL NEEDLE VALVE PN 400 F/F Size : Ends : Min Temperature : Max Temperature : Max Pressure : Specifications : DN 1/4" to 1“ Female - Female BSP or NPT - 20°C + 180°C 400 Bars Rotating rising stem 1 piece type Reduced bore Page 1 - 6 Information provided as an indication and subject to possible modification

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Needle-Valve-Stainless.Steel-NPT-2

MXT-222-481-487 STAINLESS STEEL NEEDLE VALVE PN 400 F/F SPECIFICATIONS : Respect the flow direction ( indicated by the arrow ) Reduced bore Rising rotating stem 1 piece type Stainless steel type 6000 Psi type ( PN400 ) USE : For common fluids of 2 group Min and max Temperature Ts : - 20°C to + 180°C Max Pressure Ps : 400 bars ( see graph ) nd PRESSURE / TEMPERATURE GRAPH ( STEAM EXCLUDED ) : Page 2 - 6 Information provided as an indication and subject to possible modification

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Needle-Valve-Stainless.Steel-NPT-3

MXT-222-481-487 STAINLESS STEEL NEEDLE VALVE PN 400 F/F RANGE : Stainless steel threaded female BSP cylindrical Ref. 481 from DN 1/4“ to DN 1“ Stainless steel threaded female NPT Ref. 487 from DN 1/4“ to DN 1“ Handle screw Page 3 - 6 Information provided as an indication and subject to possible modification

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Needle-Valve-Stainless.Steel-NPT-4

MXT-222-481-487 STAINLESS STEEL NEEDLE VALVE PN 400 F/F SIZE ( in mm ) : Page 4 - 6 Information provided as an indication and subject to possible modification

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Needle-Valve-Stainless.Steel-NPT-5

MXT-222-481-487 STAINLESS STEEL NEEDLE VALVE PN 400 F/F NUMBER OF TURNS TO CLOSE OR OPEN THE VALVE : Tests according to API 598, table 6 Threaded female BSP cylindrical ends according to ISO 7/1 Rp Threaded female NPT ends according to AMSE B1.20.1 DIRECTIVE 97/23/CE : Concerned by article 3, § 3 ATEX Group II Category 2 G/2D Zone 1 & 21 Zone 2 &22 ( optional marking ) ADVICE : Our opinion and our advice are not guaranteed and MXT shall not be liable for the consequences of damages. The customer must check the right choice of the products with the real service conditions. Page 5 - 6 Information...

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Needle-Valve-Stainless.Steel-NPT-6

MXT-222-481-487 STAINLESS STEEL NEEDLE VALVE PN 400 F/F INSTALLATION INSTRUCTIONS GENERAL GUIDELINES : Ensure that the valves to be used are appropriate for the conditions of the installation (type of fluid,pressure and temperature). Be sure to have enough valves to be able to isolate the sections of piping as well as the appropriate equipment for maintenance and repair. Ensure that the valves to be installed are of correct strenght to be able to support the capacity of their usage. Installation of all circuits should ensure that their function can be automatically tested on a regular basis (at...

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