01577 864870 enquiries@jmoncrieff.co.uk

Type 526 - Leser Flanged API Valves

API Valves are available from D to L orifice (1" to 3" with CL150 & CL300 Flanges)

Pressure Range is 0.3 to 51 bar g. (depending on valve type)


LESER - API safety valves offer ultimate protection against overpressure in all applications of steam, gases and liquids.

Simple safe solutions for heavy duty applications such as crude oil extraction, transportation and processing in:


Refineries * Chemical * Petrochemical * Oil and Gas * Onshore and Offshore Vessels and piping Systems * Blow-Down Systems * Storage Tank Farms



Part NumberConnectionsRange (Bar)OrificeMaterialTop (Sealed)Seal
5262.00141" ANSI #150 RF0.51 to 19.5DWCB, Carbon SteelH4 LeverMetal
5262.00241" ANSI #300 RF
0.51 to 51
DWCB, Carbon Steel
H4 Lever
Metal
5262.0012
1" ANSI #150 RF
0.51 to 19.5
DWCB, Carbon Steel
H2 CapMetal
5262.0022
1" ANSI #300 RF
0.51 to 51
DWCB, Carbon Steel
H2 Cap
Metal
5262.0154
1" ANSI #150 RF
0.51 to 19.5
EWCB, Carbon Steel
H4 Lever
Metal
5262.0152
1" ANSI #150 RF
0.51 to 19.5
EWCB, Carbon Steel
H2 Cap
Metal
5262.0164
1" ANSI #300 RF
0.51 to 51
EWCB, Carbon Steel
H4 Lever
Metal
5262.0162
1" ANSI #300 RF
0.51 to 51
EWCB, Carbon Steel
H2 Cap
Metal







5262.02941.5" ANSI #150 RF
0.51 to 19.7
FWCB, Carbon Steel
H4 Lever
Metal
5262.02921.5" ANSI #150 RF
0.51 to 19.7
FWCB, Carbon Steel
H2 Cap
Metal
5262.03141.5" ANSI #300 RF
0.51 to 51
FWCB, Carbon Steel
H4 Lever
Metal
5262.03121.5" ANSI #300 RF
0.51 to 51
FWCB, Carbon Steel
H2 Cap
Metal
5262.04541.5" ANSI #150 RF
0.51 to 19.7
GWCB, Carbon Steel
H4 Lever
Metal
5262.04521.5" ANSI #150 RF
0.51 to 19.7
GWCB, Carbon Steel
H2 Cap
Metal
5262.04741.5" ANSI #300 RF
0.51 to 51
GWCB, Carbon Steel
H4 Lever
Metal
5262.04721.5" ANSI #300 RF
0.51 to 51
GWCB, Carbon Steel
H2 Cap
Metal
5262.14241.5" ANSI #150 RF
0.51 to 19.7
HWCB, Carbon Steel
H4 Lever
Metal
5262.14221.5" ANSI #150 RF
0.51 to 19.7
HWCB, Carbon Steel
H2 Cap
Metal







5262.14442" ANSI #300 RF
0.61 to 51HWCB, Carbon Steel
H4 Lever
Metal
5262.14422" ANSI #300 RF
0.61 to 51
HWCB, Carbon Steel
H2 Cap
Metal
5262.16242" ANSI #150 RF
0.91 to 29.7JWCB, Carbon Steel
H4 Lever
Metal
5262.16222" ANSI #150 RF
0.91 to 29.7JWCB, Carbon Steel
H2 Cap
Metal







5262.16443" ANSI #300 RF
0.8 to 51JWCB, Carbon Steel
H4 Lever
Metal
5262.16423" ANSI #300 RF
0.8 to 51
JWCB, Carbon Steel
H2 Cap
Metal
5262.20243" ANSI #150 RF
0.41 to 19.7KWCB, Carbon Steel
H4 Lever
Metal
5262.20223" ANSI #150 RF
0.41 to 19.7
KWCB, Carbon Steel
H2 Cap
Metal
5262.20343" ANSI #300 RF
0.41 to 51
KWCB, Carbon Steel
H4 Lever
Metal
5262.20323" ANSI #300 RF
0.41 to 51
KWCB, Carbon Steel
H2 Cap
Metal
5262.23243" ANSI #150 RF
0.3 to 19.7
LWCB, Carbon Steel
H4 Lever
Metal
5262.23223" ANSI #150 RF
0.3 to 19.7
LWCB, Carbon Steel
H2 Cap
Metal


Product Compare (0)
K Orifice Leser Valve 3" #150 x 4" #150 5262.2022

K Orifice Leser Valve 3" #150 x 4" #150 5262.2022

SKU: 5262.2022

Leser API Series Safety Relief Valve Type 526 for Liquid, Gas and Steam Applications.Notes:Maximum Pressure is dependent on temperature of the applicationFLOW TABLELiquid (Water)Pressure (bar g.)0.21...

K Orifice Leser Valve 3" #150 x 4" #150 5262.2024

K Orifice Leser Valve 3" #150 x 4" #150 5262.2024

SKU: 5262.2024

Leser API Series Safety Relief Valve Type 526 for Liquid, Gas and Steam Applications.Notes:Maximum Pressure is dependent on temperature of the applicationFLOW TABLELiquid (Water)Pressure (bar g.)0.21...

K Orifice Leser Valve 3" #300 x 4" #150 5262.2034

K Orifice Leser Valve 3" #300 x 4" #150 5262.2034

SKU: 5262.2034

Leser API Series Safety Relief Valve Type 526 for Liquid, Gas and Steam Applications.Notes:Maximum Pressure is dependent on temperature of the applicationFLOW TABLELiquid (Water)Pressure (bar g.)0.21...

K Orifice Leser Valve 3" #300 x 4" #150 5262.2032

K Orifice Leser Valve 3" #300 x 4" #150 5262.2032

SKU: 5262.2032

Leser API Series Safety Relief Valve Type 526 for Liquid, Gas and Steam Applications.Notes:Maximum Pressure is dependent on temperature of the applicationFLOW TABLELiquid (Water)Pressure (bar g.)0.21...

L Orifice Leser Valve 3" #150 x 4" #150 5262.2324

L Orifice Leser Valve 3" #150 x 4" #150 5262.2324

SKU: 5262.2324

Leser API Series Safety Relief Valve Type 526 for Liquid, Gas and Steam Applications.Notes:Maximum Pressure is dependent on temperature of the applicationFLOW TABLELiquid (Water)Pressure (bar g.)0.21...

L Orifice Leser Valve 3" #150 x 4" #150 5262.2322

L Orifice Leser Valve 3" #150 x 4" #150 5262.2322

SKU: 5262.2322

Leser API Series Safety Relief Valve Type 526 for Liquid, Gas and Steam Applications.Notes:Maximum Pressure is dependent on temperature of the applicationFLOW TABLELiquid (Water)Pressure (bar g.)0.21...

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