Do I need this regulator and a first-stage regulator to run my Cummins 20kw generator off of 2 25 gallon propane tanks?

You have to know what the incoming pressure has to be on your generator. If it’s between 9-13 water columns per inch. You just need this one. The first stage reduces the psi from the tank to 11-15 pounds per square inch. So check your generator incoming pressure.

can this be used on natural gas

As an expert in the field for over 4 decades,,,,, YES, you can use this for natural gas as long as you put an NG appliance regulator on the appliance. Not an issue since all new equipment comes with the appliance regulator. Or..... you can order the NG spring and change that. Both are easy fixes.

Horizontal mounting: can the top be rotated so that with the inlet at 3 o'clock and the outlet at 9 o'clock the vent will be down at 6 o'clock?

That would be fine, and is actually preferred. I’m almost all cases, the vent should be placed down or horizontally to prevent blockages such bugs, leaves, etc.

Will this regulator work with a 30,000 btu ventless lp heater? Also does it come with a mount?

Yes it will work with 30,000 lp ventless lp heater. I have one on my 30,000 ventless lp 5 brick heater and it is working great. I would recommend checking the inches of water column while heater is running wide open to make sure the regulator is supplying sufficient pressure (9-13" wc). The regulator does not come with mounting bracket,but it does come with the bolts to use for a mounting bracket

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

R622-DFF Propane 2nd Stage Regulator – LP Gas Pressure Control for Tank, 9"-13" WC, 3/4" x 3/4" FNPT, 1,400,000 BTU, Residential Regulators

Product ID: 40735517

Details

Brand
LP-Gas
Item Weight
635 Grams
Material
Metal
Thread Type
10-32
UPC
674788664381

🔥1,400,000 BTU capacity

⚙️3/4" x 3/4" FNPT standard fit

🛡️Built-in relief valve & screened vent

2369 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Morocco.

Secure transaction

Description

🔥 Keep your home’s flame strong and steady — never settle for weak heat again!

SAFETY FIRST ENGINEERING - UL-listed relief valve and vent protect your system from dangerous overpressure
UNMATCHED POWER HANDLING - Supports whole-house propane demand up to 1.4 million BTU without pressure drops
PRECISION PRESSURE CONTROL - Maintains steady 9-13" WC output for consistent flame and equipment performance
SEAMLESS SYSTEM INTEGRATION - Standard 3/4" FNPT connections ensure hassle-free installation and compatibility
OPTIMIZED FOR TWO STAGE SYSTEMS - Expertly designed to balance and stabilize pressure after first-stage regulators

The Emerson-Fisher R622-DFF is a UL-listed second-stage propane regulator engineered for residential LP gas systems. It delivers precise pressure control between 9-13 inches water column, supports up to 1,400,000 BTU for whole-house demand, and features standard 3/4" FNPT connections for easy integration. With a built-in relief valve and screened vent, it ensures safe, reliable operation by preventing pressure surges and protecting downstream equipment. Ideal for two-stage propane setups, it guarantees consistent performance across multiple appliances, eliminating weak flames and uneven heating.

Specifications

ASIN	B01N20XKTC
Best Sellers Rank	#37,546 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Industrial Pressure Regulators
Brand	Arikit
Brand Name	Arikit
Customer Reviews	4.6 out of 5 stars 913 Reviews
Item Weight	635 g
Manufacturer	Emerson Process Management Regulator Technologies, Inc.
Material	Metal
Material Type	Metal
Model	R622-DFF
Number of Items	1
Number of Packs	1
Part Number	R622-DFF
Thread Style	Npt
Thread Type	Npt
UPC	674788664381 674788664299 674788664398 674788664374 674788664367
Unit Count	1 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

2369 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Morocco.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews