Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
Supco Negative Pressure Trap: 5 5/8 in Lg (MPN NPW112H) - Negative Pressure Drain Traps
SupcoNegative Pressure Drain Traps

Supco Negative Pressure Trap: 5 5/8 in Lg (MPN NPW112H)

The SUPCO Negative Pressure Trap (MPN NPW112H) is a PVC-bodied negative pressure drain trap designed for universal compatibility. It measures 5 5/8 inches in length and is suitable for use with a wide range of…

SKU 3G-OTH-71657

Brand
Supco
Item
Negative Pressure Trap: 5 5/8 in Lg
Category
Negative Pressure Drain Traps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Supco
Manufacturer Part Number
NPW112H
Product Type
Negative Pressure Trap
Body Material
PVC
Compatible Series
Universal
Compatible Manufacturer Model Number
Universal
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

Supco Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SUPCO Negative Pressure Trap (MPN NPW112H) is a PVC-bodied negative pressure drain trap designed for universal compatibility. It measures 5 5/8 inches in length and is suitable for use with a wide range of equipment as a universal replacement part.

Frequently Asked Questions

What is the SUPCO Negative Pressure Trap NPW112H used for?

The SUPCO NPW112H negative pressure trap is used in HVAC and refrigeration systems to drain condensate from equipment operating under negative pressure, such as fan coil units and air handlers. Its PVC body resists corrosion, and the universal design fits most systems.

What are the specifications of the SUPCO NPW112H?

The SUPCO NPW112H is a negative pressure trap with a PVC body, 5 5/8 inches long. It is compatible with universal series equipment and carries the manufacturer part number NPW112H. The trap is designed for condensate drainage in negative-pressure HVAC applications.

Where to buy the SUPCO NPW112H worldwide?

You can source the SUPCO NPW112H through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this negative pressure trap.

How to install the SUPCO NPW112H negative pressure trap?

Install the SUPCO NPW112H by connecting it to the condensate drain line of a negative-pressure HVAC unit. Ensure the trap is oriented vertically and the outlet is lower than the inlet to maintain proper seal. Use compatible PVC fittings and check for leaks after installation.

Used in

Common applications for Supco
Commercial refrigeration display cases — Supco RO82 relay and CSS-25U starter for compressor motor control without run capacitors
Medium-load HVAC systems — Supco SPP 6/SPP 8 hard-start devices to reduce compressor inrush current and extend motor lifespan
Cold-chain pharmaceutical and food storage — SL300TH temperature–humidity data logger for continuous monitoring and regulatory documentation
Refrigerant service operations — Piercing valves and perforator cocks in 1/2" and 5/8" sizes for fast, non-invasive line access
Compressor thermal management — Universal Compressor Door for reducing shell temperature and improving efficiency in hot ambient conditions
Retrofit and field repairs — Supco controls with Quick Connect terminals for rapid installation in legacy refrigeration circuits

Supco Products

3G Electric supplies Supco negative pressure drain traps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
SUPCO Surge Protection Device: Single Phase, 120/240V AC, 600V (L-G, L-N, N-G)/900V (L-L), Plastic (MPN LBK10). Key specifications — Voltage: 120/240V AC; Max. Continuing Operating Voltage: 150/300 V AC; Voltage Protection Rating: 600V (L-G, L-N, N-G); Enclosure Material: Plastic; Brand: SUPCO.
Supco
SUPCO Surge Protection Device: Single Phase, 120/240V AC, 600V (L-G, L-N, N-G)/900V (L-L), Plastic (MPN LBK10). Key specifications — Voltage: 120/240V AC; Max. Continuing Operating Voltage: 150/300 V AC; Voltage Protection Rating: 600V (L-G, L-N, N-G); Enclosure Material: Plastic; Brand: SUPCO.
Spark Trap: 24 in Duct, Steel, 40 in Lg, 10 in Wd (MPN 8010007300). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.
NORDFAB
Spark Trap: 24 in Duct, Steel, 40 in Lg, 10 in Wd (MPN 8010007300). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.
Spark Trap: 8 in Duct, Steel, 48 in Lg, 26 in Wd (MPN 8010007317). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.
NORDFAB
Spark Trap: 8 in Duct, Steel, 48 in Lg, 26 in Wd (MPN 8010007317). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.
Spark Trap: 6 in Duct, Steel, 48 in Lg, 28 in Wd (MPN 8010007318). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.
NORDFAB
Spark Trap: 6 in Duct, Steel, 48 in Lg, 28 in Wd (MPN 8010007318). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.
SURGE TRAP Surge Protection Device: Three Phase, 120/208V AC Wye, 150/300 V AC, Polycarbonate, 4X (MPN STXR208Y05N). Key specifications — Voltage: 120/208V AC Wye; Max. Continuing Operating Voltage: 150/300 V AC; Voltage Protection Rating: 1800V (H-G, H-L, L-G, L-L); Enclosure Material: Polycarbonate; Max. Surge Current per Mode: 50kA; Brand: SURGE TRAP.
SURGE TRAP
SURGE TRAP Surge Protection Device: Three Phase, 120/208V AC Wye, 150/300 V AC, Polycarbonate, 4X (MPN STXR208Y05N). Key specifications — Voltage: 120/208V AC Wye; Max. Continuing Operating Voltage: 150/300 V AC; Voltage Protection Rating: 1800V (H-G, H-L, L-G, L-L); Enclosure Material: Polycarbonate; Max. Surge Current per Mode: 50kA; Brand: SURGE TRAP.
Spark Trap: 20 in Duct, Steel, 44 in Lg, 14 in Wd (MPN 8010007305). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.
NORDFAB
Spark Trap: 20 in Duct, Steel, 44 in Lg, 14 in Wd (MPN 8010007305). Key specifications — Seal Material: Nitrile; Brand: NORDFAB; Base Material: Steel; Color: Blue; Connection Type: Clamp Together; Duct Compatibility: Round; For Duct Shape: Round.

More from Supco

View all Supco parts →
SUPCO Negative Pressure Trap: 5 5/8 in Lg (MPN NPW1H). Key specifications — Brand: SUPCO; Body Material: PVC; Compatible Manufacturer Model Number: Universal; Compatible Series: Universal; Product Type: Negative Pressure Trap.
Supco
SUPCO Negative Pressure Trap: 5 5/8 in Lg (MPN NPW1H). Key specifications — Brand: SUPCO; Body Material: PVC; Compatible Manufacturer Model Number: Universal; Compatible Series: Universal; Product Type: Negative Pressure Trap.
SUPCO Negative Pressure Trap: 5 5/8 in Lg (MPN NPW34H). Key specifications — Brand: SUPCO; Body Material: PVC; Compatible Manufacturer Model Number: Universal; Compatible Series: Universal; Product Type: Negative Pressure Trap.
Supco
SUPCO Negative Pressure Trap: 5 5/8 in Lg (MPN NPW34H). Key specifications — Brand: SUPCO; Body Material: PVC; Compatible Manufacturer Model Number: Universal; Compatible Series: Universal; Product Type: Negative Pressure Trap.