Skip to content
Free Local Pickup ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted American Hardware Brands
FAQ Shipping & Returns Order Lookup Contact Account
Parts 2O 20 psi To 40 psi Pressure Switch
Parts 2O 20 psi To 40 psi Pressure Switch
Parts 2O 20 psi To 40 psi Pressure Switch
Parts 2O 20 psi To 40 psi Pressure Switch
Parts 2O 20 psi To 40 psi Pressure Switch

Parts 2O 20 psi To 40 psi Pressure Switch

Parts 2O 20-40 psi Pressure SwitchMeet a compact, reliable pressure switch from Parts 2O designed to turn equipment on or off based on a precise 20–40 psi range. Built for durabili…

Parts 2O MPN TC2156-P2-01 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $31.99. Our online price is $35.99.
$35.99
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within — for same-day shipping
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Parts 2O 20-40 psi Pressure Switch

Meet a compact, reliable pressure switch from Parts 2O designed to turn equipment on or off based on a precise 20–40 psi range. Built for durability and consistent performance, it features a stainless steel connection and certified safety ratings for peace of mind in demanding environments.

  • Pressure range: 20–40 psi
  • Product type: Pressure Switch
  • Connection: 1/4" NPT, female threaded, stainless steel
  • Pipe Size: 1/4"
  • Dimensions: height 3.779 in; width 3.51 in
  • Operating temperature: 32–158°F
  • Certifications: UL Listed and CSA Listed
  • Brand: Parts 2O

Designed to control pumps and other devices in response to system pressure, this switch ensures reliable activation and deactivation within its 20–40 psi range. Its stainless steel connection and compact footprint make it ideal for tight installations and environments where durability and safety certifications matter.

The Details Specifications

Brand Parts 2O
SKU 4037395
UPC 022315383395
Unit 0
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 4 × 5 × 8
Weight 1 lbs
Cubic Feet 0.09782 ft³
Country of Origin CHINA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Free Local Pickup Ship to your hometown store
Pro & Gov Accounts Net terms · tax-exempt
Ships Nationwide From our distribution network
Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

Find a local store →
Mon–Fri 6–5 PST
Independent hardware retailer? Join the network →
About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare