Opens in a new tab
Free standard shipping on eligible US orders $500+

Blackmer 471428 Bypass Spring 126-165 PSI for Pump Relief & Transfer Systems

SKU: 471428
Weight 1 lbs
Dimensions 15 × 10 × 2 in
Condition

New

Manufacturer Part Number

471428

Brand

Blackmer

$81.26

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing
QuantityUnit priceSaving
1–4$81.260%
5–9$77.205%
10+$73.1310%

Estimate for this quantity before shipping. Tax display follows store settings. Existing cart quantities can increase the tier. Only one offer applies; a coupon replaces automatic pricing. For 20+ units, contact support for a quote.

Available to order.

Bulk quantity & quote

Enter the total quantity you need. We will confirm availability and a quote before you order.

Request this quantity →

Need a firm ship date? Availability may include supplier stock. Confirm availability before ordering for time-sensitive work.

Processing times & shipping information

The Blackmer MFG# 471428 Bypass Spring is a genuine OEM replacement component designed for use in Blackmer bypass valves on pump systems. It ensures precise pressure regulation in the 126–165 PSI range, making it essential for maintaining system safety and efficiency in propane, LP gas, and natural gas transfer operations.Key Features & Benefits:Pressure Control: Maintains bypass set points between 126–165 PSI.OEM Quality: Genuine Blackmer replacement part ensures proper fit and reliable service.Durable Construction: Made from high-tensile precision-wound steel for long service life.Wide Application: Used in bulk plant, transport, and industrial gas pumping systems.Gas Compatibility: Ideal for propane, LP gas, and natural gas transfer pumps.Specifications:Manufacturer: BlackmerModel Number: 471428Pressure Range: 126–165 PSIApplication: Pump bypass valve replacement partApplications:This bypass spring is a critical component for pump-mounted relief valves, ensuring safe operation in propane bulk plants, cylinder filling stations, and commercial LP/natural gas transfer systems.

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

Shipping methods and charges appear at checkout where available. Freight, oversized and specially handled items may require a quote. See our Shipping Policy for processing periods, restrictions and delivery information.

Explore related products

More products in this category. Compare specifications and fit for your application.