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ATR Hard Seat Check Valve

  • Max. Working Pressure: 315bar

  • DN:6~25mm

  • Working Temperature: -80℃~+600℃

  • Body Material: Carbon steel 、304、316L Stainless steel

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ATR Hard Seat Check Valve
Product description
Parameters Table
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ATR Hard Seat Check Valve

 

Uses: ATR check valves have no rubber but completely stainless steel or carbon steel, and the hard seal can still maintain good sealing performance. Such valves are mainly intended for high temperature, low temperature or special applications where no rubber should be used.

 

Features
● 
Stainless steel valves: applicable to various liquids and gases compatible with valve material; carbon steel valves: applicable to oils and non-corrosive liquids.
● The metal hard seal, nevertheless, has excellent sealing performance.
● High temperature valves (HT) have no spring and require vertical installation. The fluid must flow in the upward direction and the valve be closed by the valve core by the aid of its own weight.

 

Technical Data
● 
Type of connection: G female thread (ISO228-1)
● Cracking pressure: 0.35 bar (standard), 1 bar, 3 bar (nonstandard, optional)
● Tolerance of cracking pressure: ±25%
● Working temperature: -80℃~+250℃ (common valves); -10℃~+600℃ (high temperature valves)
● Pressure range: see “Table of Technical Data”
● Body material: 304/316L stainless steel, 45# carbon steel
● Disk material: 630 hardened stainless steel (standard); for HT valves, the sealing face is cemented carbide
● Spring material: 304 stainless steel 
● Max. leakage: as per GB/T26480-2011

 

Working Pressure PN/Temperature Correction Table: Pallowable=Kt*PN

 

Stainless Steel Range of Working Pressure Working Temperature [℃] -80~+50 100 150 250 350 450 550 600
304 -80℃~+450℃ Correction factor Kt 1 0.8 0.73 0.64 0.58 0.54 - -
316L -80℃~+600℃ Correction factor Kt 1 0.83 0.76 0.66 0.6 0.57 0.47 0.39

 

I) Female Threaded Check Valve

 

 

Ordering Information

 

 

II) Weld End Check Valve

 

 

Ordering Information

 


Weld End Check Valve Table of Technical Data [mm]

 

Ordering Number DN Tube Size
AD
S L L1 SW1 SW2 Max. Working Pressure [bar]
Common Valve High Temperature Valve
K-ATR-12L-SS K-ATR-12L-HT-SL 8 12 1.5 62 115 22 22 315
K-ATR-18L-SS K-ATR-18L-HT-SL 12 18 2.5 68 130 30 30 315
K-ATR-22L-SS K-ATR-22L-HT-SL 16 22 3 83 147 36 36 250

Female Threaded Check Valve Table of Technical Data [mm]

 

Ordering Number DN G L SW Max. Working Pressure [bar]
Stainless Steel Valve Carbon Steel Valve High Temperature Valve
ATR-G1/4-SS ATR-G1/4-CS ATR-G1/4-HT-SL 6 G1/4 60 19 315
ATR-G3/8-SS ATR-G3/8-CS ATR-G3/8-HT-SL 8 G3/8 62 24 315
ATR-G1/2-SS ATR-G1/2-CS ATR-G1/2-HT-SL 12 G1/2 71 30 315
ATR-G3/4-SS ATR-G3/4-CS ATR-G3/4-HT-SL 16 G3/4 87 36 300
ATR-G1-SS ATR-G1-CS ATR-G1-HT-SL 18 G1 100 46 300
ATR-G11/4-SS ATR-G11/4-CS ATR-G11/4-HT-SL 25 G11/4 112 55 250

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2021-09-14 09:26:12
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