★ EST. 1874 ★ WATTS WATER TECHNOLOGIES
⚙  Authorized USA Dealer  ·  All 15 Models  ·  PDI Certified

Commercial Watts
Grease Traps

America's best price on Watts grease traps and Dormont interceptors. All-welded steel, enamel coated, deep-sealed trap. WD Series 8–100 LB and GI Series 150–200 LB — all 15 models in stock with fast US shipping.

🛒 Shop All 15 Watts Models 📞 404-863-9232 📐 Size Guide ↓
15
Models
4–100
GPM Range
1874
Founded
PDI
Certified

150 Years of Grease Trap Innovation

Founded in 1874 by Joseph Watts, Watts Regulator Company made its reputation for safety innovation manufacturing the best grease interceptors and grease traps in the industry. Today, Watts & subsidiary Dormont offers one of the broadest lines of grease interceptor flow control products in North America — including the WD Series all-welded steel interceptors, low-profile WD-L models, heavy-duty GI Series, and Dormont gas connectors. PDI G101 certified. Available exclusively through USA Equipment Direct.

Watts WD Series · All-Welded Steel · PDI G101 Certified

WD Series Grease Traps — Standard Models

All-welded steel, enamel coated inside and out. Deep-sealed trap, cast iron external flow control, removable gasketed solid steel cover with hex head center bolt, removable baffle. PDI G101 & ASME A112.14.3 certified.
View all 15 Watts models →

All Grease Traps All Watts Products Acid Resistant Traps Poly Grease Traps Stainless Traps Zurn Grease Traps Ashland PolyTraps
Standard
Watts WD-4 grease trap 8 lb 4 GPM for sale
WD-48 LB · 4 GPM
Watts WD Series
WD-4 — 8 LB Grease Trap
PDIIn Stock
8 LB4 GPM2″
MSRP $891.70
$397.00
Buy →
Standard
Watts WD-7 grease trap 14 lb 7 GPM interceptor
WD-714 LB · 7 GPM
Watts WD Series
WD-7 — 14 LB / 7 GPM
PDIIn Stock
14 LB7 GPM2″
MSRP $1,012.95
$451.00
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Standard
Watts WD-10 grease trap 20 lb 10 GPM commercial interceptor
WD-1020 LB · 10 GPM
Watts WD Series
WD-10 — 20 LB / 10 GPM
PDIIn Stock
20 LB10 GPM2″
MSRP $1,250.40
$557.00
Buy →
Standard
Watts WD-15 grease trap 30 lb 15 GPM
WD-1530 LB · 15 GPM
Watts WD Series
WD-15 — 30 LB / 15 GPM
PDIIn Stock
30 LB15 GPM3″
MSRP $1,449.92
$646.00
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Standard
Watts WD-20 grease trap 40 lb 20 GPM commercial interceptor
WD-2040 LB · 20 GPM
Watts WD Series
WD-20 — 40 LB / 20 GPM
PDIIn Stock
40 LB20 GPM3″
MSRP $1,765.70
$787.00
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Standard
Watts WD-25 grease trap 50 lb 25 GPM interceptor
WD-2550 LB · 25 GPM
Watts WD Series
WD-25 — 50 LB / 25 GPM
PDIIn Stock
50 LB25 GPM3″
MSRP $2,326.46
$1,036.00
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Standard
Watts WD-35 grease trap 70 lb 35 GPM commercial interceptor
WD-3570 LB · 35 GPM
Watts WD Series
WD-35 — 70 LB / 35 GPM
PDIFree Freight
70 LB35 GPM4″
MSRP $3,028.73
$1,349.00
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Standard
Watts WD-50 grease trap 100 lb 50 GPM commercial interceptor
WD-50100 LB · 50 GPM
Watts WD Series
WD-50 — 100 LB / 50 GPM
PDIFree Freight
100 LB50 GPM4″
MSRP $3,700.64
$1,649.00
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Save Up to 55% off MSRP on Watts

Our pricing beats every competitor. WD-4 at $397 vs $891 MSRP. GI-100-K at $4,765 vs $10,695 MSRP.

🛒 Shop All 15 Watts Products 📞 Call 404-863-9232
Watts WD-L Series · Low Profile Design · Same Capacity

Low Profile Watts Grease Traps

Same PDI-certified all-welded steel construction as the standard WD series — but in a low-profile housing for tight installations, under-counter fits, or pit applications. WD-20-L, WD-35-L, WD-50-L.

Low Profile
Watts WD-20-L low profile grease trap 40 lb 20 GPM
WD-20-L40 LB · Low Profile
Watts WD-L Low Profile
WD-20-L — 40 LB Low Profile
PDILow Profile
40 LB20 GPM4″Low Profile
MSRP $2,887.17
$1,286.00
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Low Profile
Watts WD-35-L low profile grease trap 70 lb 35 GPM
WD-35-L70 LB · Low Profile
Watts WD-L Low Profile
WD-35-L — 70 LB Low Profile
PDILow ProfileFree Freight
70 LB35 GPM4″Low Profile
MSRP $4,752.39
$2,117.00
Buy →
Low Profile
Watts WD-50-L low profile grease trap 100 lb 50 GPM
WD-50-L100 LB · Low Profile
Watts WD-L Low Profile
WD-50-L — 100 LB Low Profile
PDILow ProfileFree Freight
100 LB50 GPM4″Low Profile
MSRP $5,183.42
$2,309.00
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💡 Low Profile vs Standard: WD-L models have the same grease capacity and PDI rating as standard WD — the low-profile design reduces the overall height for installations where vertical clearance is limited (under counters, in pits, below floors). Same inlet/outlet pipe sizes apply.

Watts GI-75-K & GI-100-K · Heavy Duty · 75–100 GPM

GI Series — Heavy Duty Grease Interceptors

For large commercial kitchens, hotels, hospitals, and high-volume food service. All-welded steel, enamel inside and out, 4″ no-hub inlet/outlet with cast iron external flow control device. PDI G101 certified. Free freight in the lower 48.

Heavy Duty
Watts GI-75-K grease interceptor 150 lb 75 GPM heavy duty
GI-75-K150 LB · 75 GPM
Watts GI Series · Heavy Duty
GI-75-K — 150 LB / 75 GPM
PDIFree Freight
150 LB75 GPM4″30¾″×39¾″×23″H
MSRP $6,726.83
$2,997.00
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Heavy Duty
Watts GI-100-K grease interceptor 200 lb 100 GPM heavy duty for sale
GI-100-K200 LB · 100 GPM
Watts GI Series · Heavy Duty
GI-100-K — 200 LB / 100 GPM
PDIFree Freight
200 LB100 GPM4″
MSRP $10,695.23
$4,765.00
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Dormont by Watts · Gas Connectors & Kits

Dormont Gas Connector Hose Kits

Watts subsidiary Dormont manufactures professional gas connector hose assemblies for commercial kitchen equipment. Available in 36″ and 48″ lengths.

Gas Connector
Dormont 1675KIT36 gas connector hose kit assembly 36 inch
1675KIT3636″ Gas Kit
Dormont by Watts
1675KIT36 — Gas Connector 36″
In Stock
36″ LengthHose Kit
MSRP $562.10
$250.00
Buy →
Gas Connector
Dormont 1675KIT48 gas connector hose kit assembly 48 inch
1675KIT4848″ Gas Kit
Dormont by Watts
1675KIT48 — Gas Connector 48″
In Stock
48″ LengthHose Kit
MSRP $604.78
$269.00
Buy →
Watts Grease Trap Sizing Chart

Find the Right Watts Grease Trap

Match total fixture flow rate (GPM) to the right Watts model. Need help sizing? Call 404-863-9232 — free sizing consultation.

4
GPM · 8 LB
Coffee Bar / Food Truck
Watts WD-4
Shop WD-4 →
7
GPM · 14 LB
Small Café / Deli Counter
Watts WD-7
Shop WD-7 →
10
GPM · 20 LB
Quick-Serve Restaurant
Watts WD-10
Shop WD-10 →
15
GPM · 30 LB
Small Restaurant
Watts WD-15
Shop WD-15 →
20
GPM · 40 LB
Mid-Size Restaurant
WD-20 (std) · WD-20-L (low profile)
Shop WD-20 →
25
GPM · 50 LB
Full-Service Restaurant
Watts WD-25
Shop WD-25 →
35
GPM · 70 LB
Large Restaurant / Sports Bar
WD-35 (std) · WD-35-L (low profile)
Shop WD-35 →
50
GPM · 100 LB
Large Commercial Kitchen
WD-50 (std) · WD-50-L (low profile)
Shop WD-50 →
75
GPM · 150 LB
Hotel / Hospital / Institution
Watts GI-75-K (heavy duty)
Shop GI-75-K →
100
GPM · 200 LB
Large Institution / Venue
Watts GI-100-K (heavy duty)
Shop GI-100-K →
Why Choose Watts?

Built Different Since 1874

🏗️
All-Welded Steel

Every WD and GI model features an all-welded steel body — not bolted, not riveted. Enamel coated inside and out for maximum corrosion resistance and long service life.

🔒
Deep-Sealed Trap

Watts' proprietary deep-sealed trap design provides superior grease retention and prevents sewer gas from escaping. Removable gasketed solid steel cover with hex head center bolt.

✅
PDI G101 Certified

Every Watts grease interceptor meets PDI G101 and ASME A112.14.3 standards. Accepted by health departments, plumbing inspectors, and code officials across all 50 states.

⚙️
Cast Iron Flow Control

External cast iron flow control device provides precise GPM regulation. Removable baffle for easy cleaning. Installation suitable for pedestrian traffic on all models.

🚚
Fast Shipping USA

All 15 Watts models ship fast from USA Equipment Direct. WD-4 through WD-25 typically 2–5 days. Larger units and GI Series ship freight with free delivery on qualifying orders.

💰
Up to 55% Off MSRP

USA Equipment Direct consistently offers Watts products at 50–55% below MSRP. WD-4 from $397 (MSRP $891). GI-100-K from $4,765 (MSRP $10,695). No hidden fees.

Frequently Asked Questions

Watts Grease Trap FAQ

What is the Watts WD grease trap series?
The Watts WD series is an all-welded steel grease interceptor available from WD-4 (8 lb, 4 GPM) to WD-50 (100 lb, 50 GPM). Features include enamel coating inside and out, a deep-sealed trap, cast iron external flow control device, removable gasketed solid steel cover with hex head center bolt, and removable baffle. All models are PDI G101 and ASME A112.14.3 certified. Uses 2″–4″ no-hub inlet and outlet connections.
What is the Watts WD-L low profile grease trap?
The Watts WD-L series (WD-20-L, WD-35-L, WD-50-L) provides the same PDI-certified performance as the standard WD series but in a lower-profile housing. Ideal for under-counter installations, pit installations, or any location with limited vertical clearance. Same enamel-coated all-welded steel construction, same inlet/outlet sizes, same grease capacity — just a shorter height dimension.
What is the Watts GI-75-K grease interceptor?
The Watts GI-75-K is a heavy-duty grease interceptor rated at 150 LBS capacity / 75 GPM with a 4″ no-hub inlet/outlet. All-welded steel construction with enamel coating, cast iron external flow control device, deep-sealed trap, and removable gasketed solid steel cover with hex head center bolt. PDI G101 certified. Dimensions: 30¾″W × 39¾″L × 23″H. Suitable for pedestrian traffic. Free freight to commercial addresses. Ideal for large restaurants, hotel kitchens, and institutional food service.
What is the difference between the WD series and the GI series?
The WD series (WD-4 through WD-50) covers 4–50 GPM / 8–100 LB capacity and is designed for typical commercial restaurant applications. The GI series (GI-75-K and GI-100-K) covers 75–100 GPM / 150–200 LB capacity for larger commercial, institutional, and high-volume food service applications. Both series use the same all-welded steel with enamel coating and PDI G101 certification — the GI series simply handles greater flow rates and grease loads.
Who is Dormont and what do they make?
Dormont is a subsidiary of Watts Water Technologies. Dormont specializes in gas connector hose kits and assemblies for commercial kitchen equipment — connecting gas lines to fryers, ranges, ovens, and other appliances. The 1675KIT36 (36″) and 1675KIT48 (48″) are professional-grade gas connector assemblies designed for commercial use. Available at USA Equipment Direct.
How fast does Watts ship from USA Equipment Direct?
Most Watts grease traps ship same-day or next business day from our warehouse. Smaller WD units (WD-4 through WD-25) typically arrive in 2–5 business days via parcel carrier. Larger units (WD-35, WD-35-L, WD-50, WD-50-L, GI-75-K, GI-100-K) ship via LTL freight, typically 5–10 business days, with free freight to commercial addresses in the lower 48. Call 404-863-9232 for current availability on any model.
Are Watts grease traps suitable for pedestrian traffic?
Yes — all Watts WD and GI series grease interceptors are rated as suitable for pedestrian traffic installation. The gasketed solid steel cover with hex head center bolt provides both a secure seal and sufficient structural integrity for floor-level installations where foot traffic passes over the unit.

Ready to Order Your Watts Grease Trap?

All 15 models in stock. Expert sizing help. Best price in the USA. Free freight on large orders.

🛒 Shop All 15 Watts Models ✉ Contact Online 📞 404-863-9232
Full Product & Link Directory

All Watts Models & Related Links

Watts Grease Trap for Sale 8 LB Grease Trap 14 LB Grease Trap 20 LB Grease Trap 30 LB Grease Trap 40 LB Grease Trap 50 LB Grease Trap 70 LB Grease Trap 100 LB Grease Trap 150 LB Grease Interceptor 200 LB Grease Interceptor Low Profile Grease Trap Watts WD-50-L Low Profile Commercial Grease Trap Buy Watts Online USA Grease Trap 4 GPM Grease Trap 10 GPM Grease Trap 25 GPM Grease Trap 50 GPM Grease Trap 75 GPM Grease Trap 100 GPM PDI Certified Grease Trap All-Welded Steel Grease Trap Dormont Gas Connector Dormont 1675KIT

Watts WD Series — Standard

Watts WD-L Low Profile

Watts GI Series — Heavy Duty

Dormont Gas Connectors

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