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

Capitol N-300X3 Black Steel Pipe Nipple 3″ x 3″ Extra Heavy Duty Gas Fitting

SKU: N-300X3
Weight 3 lbs
Dimensions 8 × 8 × 8 in
Condition

New

Manufacturer Part Number

N-300X3

Brand

Capitol

$87.59

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$87.590%
5–9$83.215%
10+$78.8310%

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

Upgrade your industrial gas or plumbing system with the Capitol N-300X3 Extra Heavy Black Steel Nipple. Measuring 3″ x 3″ with male NPT threaded ends, this fitting is engineered for high-pressure propane, LP gas, natural gas, steam, air, or water applications.✔ Durable Construction – Made from extra heavy-duty black steel for long-lasting performance in demanding environments.✔ Secure Fit – Precision-cut 3″ NPT threads ensure tight, leak-resistant connections.✔ Versatile Applications – Commonly used in propane bulk plant setups, LP gas distribution, HVAC piping, and industrial plumbing.✔ Trusted Brand – Manufactured by Capitol, known for high-quality pipe fittings.Specifications:Brand: CapitolModel: N-300X3Size: 3″ NPT x 3″ NPTMaterial: Extra Heavy Black SteelLength: 3″Condition: Brand NewThis part pairs perfectly with industrial gas regulators, shut-off valves, and distribution manifolds, making it a reliable choice for propane transfer stations, LP bulk plants, and natural gas service lines.⚠️ Prop 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer and reproductive harm.

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.