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Bolted Cover Non Return Valve ( Flange End & Buttweld)

A bolted cover non-return valve is designed to allow unidirectional flow of fluids, preventing backflow in industrial systems. The bolted cover construction ensures a secure and leak-proof seal, making the valve suitable for high-pressure and high-temperature applications. This valve is available in two connection types: flange end and buttweld. Flange end valves are easy to install and maintain, while buttweld valves provide a permanent, leak-tight connection, ideal for critical and long-term applications. These valves are widely used in industries such as oil and gas, power, and water treatment, where reliable prevention of backflow and durability are essential for safe and efficient operations.

Details

Specifications

Design std

BS1868/API 6B

Size

2″ TO 24″

Class

150# TO 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 As Per Trim Material Combination
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 GASKET STAINLESS STEEL + GRAPHOIL
6 BONNET A216
WCB
A352
LCB
A217
WC1
A217
WC6
A217
WC9
A217
C5
A217
C12
A351
CF8
A351
CF8M
A351
CF3
A351
CF3M
13 STUDS AND NUTS A193
B7
A320
L7
A193
B16
A193
B16
A193
B16
A193
B16
A193
B16
A193
B8
A193
B8
A193
B8
A193
B8
A194
2H
A194
Gr.4
A194
2H
A194
Gr.4
A194
Gr.4
A194
Gr.4
A194
Gr.4
A194
Gr.8
A194
Gr.8
A194
Gr.8
A194
Gr.8
8 DISC NUT STAINLESS STEEL
9 SIDE PLUG STAINLESS STEEL
10 LIFTING HOOK CARBON STEEL
NOTES : The above data is subject to change without any notice due to our continuing product improvement Program.