Blackmer XL1.25A 1-1/4″ Sliding Vane Pump SVCV Seal 51-80 PSI Relief Spring

Item Specifications

Blackmer’s documentation confirms 1-1/4″ NPT ports, ductile-iron casing/heads, cast-iron liner/discs, 350 PSI maximum working pressure, and a 150 PSI maximum differential pressure for the XL1.25 series. The 51–80 PSI relief-valve spring is Blackmer part 471420, and the SVCV mechanical seal uses hardened steel, carbon and FKM components.

Key Features

• Genuine Blackmer XL1.25A industrial pump
• Positive-displacement sliding vane design
• 1-1/4″ NPT inlet/outlet configuration
• High-capacity design with approximately 9–35 GPM operating capacity
• SVCV mechanical seal configuration
• Hardened-steel stationary seal seat
• Carbon rotating seal face
• FKM/Viton-type elastomer O-rings
• Integral internal relief valve
• 51–80 PSI relief-valve spring
• Durable ductile-iron pump casing
• Replaceable cast-iron liner and end discs
• Standard Duravane construction
• Foot-mounted configuration
• Designed for reliable continuous industrial fluid-transfer service
• Replaceable wear components simplify rebuilding and maintenance

The replaceable casing liner and discs are specifically intended to facilitate rebuilding of the pumping chamber, a useful feature for industrial service where maintainability and long service life are important.

BLACKMER XL1.25A 1-1/4″ SLIDING VANE PUMP – SVCV SEAL – 51-80 PSI SPRING

Offered for sale is a Blackmer XL1.25A 1-1/4″ positive displacement sliding vane pump configured with an SVCV mechanical seal and 51-80 PSI internal relief-valve spring.

The XL1.25A is part of Blackmer’s industrial XL Series and is engineered for reliable transfer and process applications requiring consistent flow, durable construction, and easy serviceability. Its sliding vane pumping principle provides positive displacement performance over a broad range of operating conditions.

This configuration incorporates Blackmer’s SVCV mechanical seal arrangement utilizing a hardened-steel stationary seat, carbon rotating seal face, and FKM sealing components. The pump also features an integral internal relief valve equipped with the 51-80 PSI spring range.

FEATURES:

• Blackmer XL1.25A pump

• 1-1/4″ NPT tapped ports

• Positive displacement sliding vane design

• SVCV mechanical seal

• Hardened-steel stationary seal seat

• Carbon rotating seal face

• FKM sealing components

• Internal pressure relief valve

• 51-80 PSI relief-valve spring

• Heavy-duty ductile-iron casing

• Cast-iron liner and discs

• Replaceable pumping chamber wear components

• Standard Duravane vane construction

• Foot-mounted industrial configuration

• Approximately 9-35 GPM capacity range

• Maximum working pressure up to 350 PSI

• Maximum differential pressure up to 150 PSI

TYPICAL APPLICATIONS:

Suitable for industrial liquid transfer, loading and unloading systems, process-fluid circulation, petroleum and refined-product handling, bulk liquid transfer, tank transfer, plant pumping systems, and other compatible fluid-handling applications.

Compatibility with the specific liquid, temperature, viscosity, operating pressure, and installation must be verified before use.

IMPORTANT: Please verify the model, seal materials, port size, relief-valve setting, rotation, and all other operating requirements against your application before purchase.