DELAVAN 0.85-70-B Oil Burner Nozzle Orifice

( Brand: Delavan ), ( Manufacturer Part Number: 0.85-70-B ), ( Part Type: Oil Nozzle )

Review DELAVAN Type Oil Burner Nozzle Brass Orifice

The **Delavan 0.85-70-B Oil Burner Nozzle Orifice** is a precision-engineered component designed to deliver optimal fuel atomization and combustion efficiency in residential, commercial, and light industrial oil-fired heating systems. Part of Delavan s renowned line of high-performance oil burners, this orifice is specifically engineered for use with **#2 heating oil** and is compatible with a variety of burner models featuring a **0.85 GPH (gallons per hour) flow rate** at a **70 PSI (pounds per square inch) pressure setting**, making it ideal for systems requiring moderate heat output. Crafted from durable **brass or stainless steel** (depending on the model variant), the orifice is machined to exacting tolerances to ensure consistent fuel spray patterns, minimizing soot buildup, clogging, and inefficient combustion. Its **threaded design** allows for easy installation and replacement, ensuring quick serviceability without the need for specialized tools. The **70-B designation** indicates a specific spray angle and fuel flow characteristic, tailored for applications where precise heat modulation is critical, such as in forced-air furnaces, hot water boilers, or hydronic heating systems. Whether integrated into a new installation or used as a replacement part for an existing Delavan burner, this orifice enhances fuel efficiency, reduces emissions, and extends the lifespan of the burner by promoting cleaner, more complete combustion. Built to withstand the demands of continuous operation in varying environmental conditions, it exemplifies Delavan s commitment to reliability and performance in oil-fired heating solutions.

### Pros and Cons of buying a Delavan 0.85-70-B Oil Burner Nozzle Orifice

1. **Compatibility and Fit:** The Delavan 0.85-70-B nozzle is designed specifically for oil burners, ensuring a proper fit with compatible systems. Delavan is a well-known brand in the heating industry, so the part is likely to be reliable and widely supported by technicians.

2. **Performance Optimization:** The 0.85 orifice size is optimized for medium to high-efficiency oil burners, providing balanced fuel atomization and combustion efficiency. This can lead to better heat output, reduced soot buildup, and improved burner longevity.

3. **Durability:** Delavan components are generally built to last, with materials resistant to corrosion and wear. The nozzle orifice is a critical part of the burner system, and a high-quality part like this can prevent frequent failures or clogging.

4. **Ease of Installation:** Since it is a standard replacement part, installation is straightforward for someone with basic mechanical skills or a technician. The part is designed to drop-in replace the existing orifice, minimizing downtime.

5. **Warranty and Support:** Delavan offers warranties on many of its products, and the part may be backed by the manufacturer or distributor. This provides peace of mind in case of defects or issues post-installation.

6. **Fuel Efficiency:** A properly sized orifice ensures optimal fuel consumption, reducing waste and lowering operating costs over time.

7. **Availability of Parts:** As a common component, the 0.85-70-B orifice is easy to find in stock at HVAC supply stores or online retailers, reducing lead times for replacements.

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1. **Cost:** Replacement parts, especially from reputable brands like Delavan, can be more expensive than generic or aftermarket alternatives. The price may be a barrier for budget-conscious buyers.

2. **Compatibility Risks:** While the 0.85-70-B is designed for many oil burners, there is a risk of misalignment or improper fit if the burner model or fuel type (e.g., #2 vs. #6 oil) does not match the nozzle s specifications. Always verify compatibility with the burner s manual or a technician.

3. **Professional Installation Required:** While the part itself is simple to replace, improper handling (e.g., cross-threading, misalignment, or contamination) can damage the burner or reduce performance. If unsure, hiring a professional is advisable.

4. **Potential for Clogging:** Oil burners are prone to clogging due to impurities in the fuel. Even with a high-quality orifice, regular maintenance (e.g., cleaning or replacing filters) is necessary to prevent blockages.

5. **Limited Customization:** The orifice size is fixed at 0.85, which may not be ideal for all burners. If the burner s fuel demand changes (e.g., due to system modifications), the orifice may need to be adjusted or replaced with a different size.

6. **Environmental and Safety Concerns:** Oil burners produce emissions, and improper nozzle calibration can lead to inefficient combustion, increasing pollution or the risk of carbon monoxide leaks. Ensuring the system is properly tuned is critical.

7. **Depreciation:** Like all mechanical parts, the orifice may wear out over time, especially if the burner operates frequently or with poor-quality fuel. Replacement costs will recur as the part ages.

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The Delavan 0.85-70-B oil burner nozzle orifice is a high-quality, reliable part that offers significant benefits for oil burner systems, including improved efficiency, durability, and compatibility. Its advantages in performance and longevity make it a worthwhile investment for homeowners or businesses with oil heating systems. However, the higher cost and the need for proper installation and maintenance are important considerations. Additionally, ensuring the part matches the specific requirements of your burner system is crucial to avoid performance issues.

If you are experiencing issues with your oil burner such as poor combustion, excessive soot, or inefficient heating and suspect the orifice may be the culprit, purchasing the Delavan 0.85-70-B is a strong choice, provided it matches your burner s specifications. To minimize risks:

- **Verify compatibility** with your burner model and fuel type using the manufacturer s guidelines or consulting a technician.

- **Consider professional installation** if you lack experience with oil burner maintenance to avoid damaging the system.

- **Pair the purchase with regular maintenance**, including filter changes and fuel system inspections, to prolong the orifice s life and ensure optimal performance.

For most users, the benefits of using a Delavan part outweigh the drawbacks, especially if the burner is critical to heating a home or business. If budget is a concern, compare prices from authorized dealers or consider purchasing from reputable online retailers that offer warranties. Ultimately, investing in a quality part like this can save money in the long run by preventing costly repairs or inefficiencies.

Details:

This nozzle is crafted for combustion applications.: Standard Brand: Delavan. Material: Brass/Stainless Steel. MPN: 0.85-70-B.

It comes with a brass body and stainless steel orifice. Features a brass body with stainless steel orifice. Technical Specifications: Spray Angle: 70 degrees. Designed with rolled threads to eliminate chips and burrs.

Product highlights: This nozzle is suitable for various heating applications, ensuring efficient combustion.: The Delavan 0.85-70-B is a Type B oil burner nozzle. Offers a spray angle of 70 degrees and flow rate 0.85 gallons per hour at 100 psi.

part #: 08570 prices

• $11.20-$23.74

specifications momaequ:

• brand: Delavan
• mpn: 0.85-70-b
• part type: Oil Nozzle

shipping momaequ:

• type: Fixed
• class: Standard
• transit: 4-8 Days
• cost: $0.00
• service: Standard

general momaequ:

• Industrial Automation Motion Controls > Electric Motors > Definite Purpose Motors
• condition: New

payments momaequ:

• credit card: Mastercard
• other
• wallet: Google-pay

returns momaequ:

• time: 30 Days
• paid by: Seller
• method: Money back
• policy: Returns Accepted

offer momaequ:

• started: April 24, 2026
• quantity: 24
• availability: In Stock
• options: Ship-to-home
• sold: 0

seller momaequ:

• # reviews: 30327
• rating: 99.4%
• city: Dresher, PA

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