Custom Search
Home | About Valvias | Login sponsor | Sponsor Info | Valvias Tv | Contact | Site Map |
Valvias The most visited portal for Valves & Actuators
  Open to all manufacturers and distributors
[+info]  
Home contact
General
Basic Concepts
Types of valves
Types of actuators
Norms & Testing
Technical Literature
Software
Search
Valve
Actuator
Company
Company on the map
Updates
Requests for Quotation
Stocks
Articles
News
Trade Fairs
Courses
Job Offers
Tools
Miscellanea
Glossary
Links
Valvias Tv
Login sponsor
Sponsor Info
About Valvias
Contact
Site Map
Basic Concepts > Design > Valve-pipe connection Espa˝ol
 
Removable
Clamping connection
Flange connection
Lug connection
Thread connection
Wafer connection
Welded
Butt Weld connection
Socket Weld connection
 
Google
Coefficients Cv Kv
Flow equations
Flanges
ANSI/ASME vs ISO
Valve books
Thread Connection

Dixon - Ball valve female NPT thread connection Thread connection is usually used on 2" (50 mm) valves or under, and is not recommended for elevated temperature service. This connection is also used in low maintenance or non-critical applications.

Types of Threads

Threads are according NPT (National Pipe Threads) as American Standard which is the most used in the oil industry or BSP (British Standard), the most common in Europe.

BSP thread can be taper (ISO 7/1 standard or the DIN 2999 and JIS B0203 equivalents) and parallel (ISO 228/1 or DIN ISO 228/1, BSP PL, JIS B0202 equivalents).

Type of End: Male/Female Ends

The thread ends of the valve can be Male (M), external thread like a bolt, or Female (F), internal thread like a nut.

Both ends can be combined on:

• Male-Male (M-M)
• Male to Female (M-F)
• Female-Female (F-F)
Dixon - Válvula de bola con conexión roscada 'hembra' NPT
Standards for Thread connections

B16.11 - 2009 Forged Fittings, Socket-Welding and Threaded
This Standard covers ratings, dimensions, tolerances, marking and material requirements for socket-welding and threaded forged fittings. These fittings are designated as Class 2000, 3000, and 6000 for threaded end fittings and Class 3000, 6000, and 9000 for socket-weld end fittings.

© 2007-2013 www.valvias.com, All Rights Reserved. Unauthorized reproduction prohibited.