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Pressure Seal Non Return Valve ( Flange End & Buttweld)

A pressure seal non-return valve is designed to allow unidirectional fluid flow while preventing backflow in high-pressure and high-temperature systems. Its pressure seal bonnet ensures a tight and reliable seal, becoming more effective as internal pressure increases, making it suitable for demanding industrial applications. The valve is available in two connection types: flange end and buttweld. The flange end version facilitates easy installation and maintenance, while the buttweld version provides a permanent, leak-tight connection for critical and long-term use. Commonly used in industries such as oil and gas, power generation, and petrochemicals, this valve is valued for its durability, efficiency, and ability to handle extreme operating conditions.

Details

Specifications

Design std

ASME B16.34

Size

2″ TO 14″

Class

600# 900# 1500# 2500#

Body & Bonnet Material

WCB, WCC, WC6, WC9, C 5, C 12, LCB, LCC, CF8, CF8M

SEAT

A105+13%CR, A105+STEELITED 6#

TRIM

API NO. 1 TO 16

Face to Face

ANSI B16.10

End Connection

ANSI B16.5

STANDARD MATERIAL COMBINATION

P. NO. PART DESCRIPTION Carbon Steel to ASTM Alloy Steel to ASTM Stainless Steel to ASTM
Type WCB Type LCB Type WC1 Type WC6 Type WC9 Type C5 Type C12 Type CF8 Type CF8M Type CF3 Type CF3M
1 BODY A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
2 BODY SEAT RING A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
3 DISC A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
4 HING A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
5 FORK A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
6 BONNET A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
7 PRESSURE SEAL GASKET GRAPHOIL
8 COVER A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
9 WASHER CARBON STEEL
10 NUTS A194
2H
A194
Gr.4
A194
Gr.4
A194
Gr.4
A194
Gr.4
A194
Gr.4
A194
Gr.4
A194
Gr.8
A194
Gr.8
A194
Gr.8
A194
Gr.8
11 PRESSURE RING A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
12 FORK NUT STAINLESS STEEL
13 HING PIN STAINLESS STEEL
14 DISC NUT STAINLESS STEEL
15 LOCKING PIN STAINLESS STEEL
16 WASHER STAINLESS STEEL
NOTES : The above data is subject to change without any notice due to our continuing product improvement Program.