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Carbon Steel Butt Welding Ends Axial Flow Check Valve

Availability:
Quantity:
  • ACH61

  • NIPO

Based on the outstanding performance of the axial flow check valve, such as low flow resistance, quick closure and water hammer elimination, the butt-weld connection upgrades it from a "high-performance valve" to a permanent and highly reliable basic component suitable for high-pressure, high-temperature, highly toxic or high-purity pipelines. It realizes the "metal fusion" of valves and pipes, making it the preferred choice for key nodes that require absolute sealing and long service.


When your application scenario meets any of the following characteristics, the butt-welded silent axial flow check valve is not merely a superior choice, but a technical necessity:


Medium Properties: Toxic, carcinogenic, extremely hazardous, or expensive media that must not leak.
Operating Parameters: Pressure class ≥ Class 600, temperature below -50°C or above 300°C.
Environmental Requirements: Directly buried pipelines, deep-sea applications, high vibration environments, or zero-maintenance requirements.
Industry Standards: Mandatory or preferred use of butt-welded connections as specified in the applicable engineering design codes.

By integrating state-of-the-art check valve technology with the most reliable pipeline connection method, the butt-welded silent axial flow check valve delivers an ultimate reliability solution characterized by "one-time investment, lifelong maintenance-free operation." It sacrifices disassembly convenience in exchange for absolute safety and stability of the system during long-term operation in harsh environments, serving as a core component truly safeguarding critical lifeline projects.



Design Basis

GB

API/ASME

Design Standard

GB/T 21387

API6D

ASME B16.34

Face-to-Face

GB/T 12221

API6D

ASME B16.10

Connection End

BW

GB/T 9113

ASME B16.5

Materials

NACE MRO175

Test and Check

GB/T 26480

API598

The valve connection end standard designed and manufactured according to user requirements.



Main Parts and Materials  Conventional Type

Part Name

Carbon Steel

Low Temp Steel

Stainless Steel

GB

ASTM

GB

ASTM

GB

ASTM

Body

WCB

A216-WCB

LCB

LCC

A352-LCB

A352-LCC

CF8

CF8M

A351-CF8

A351-CF8M

Disc

WCB

A216-WCB

LCB

LCC

A352-LCB

A352-LCC

CF8

CF8M

A351-CF8

A351-CF8M

Guiding part

WCB

A216-WCB

LCB

LCC

A352-LCB

A352-LCC

CF8

CF8M

A351-CF8

A351-CF8M

Sleeve

12Cr18Ni9

SS304

12Cr18Ni9

00Cr17Ni12Mo2

SS304

12Cr18Ni9

00Cr17Ni12Mo2

SS304

SS316

Spring

SS304、SS316、InconelX-750





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