Buy John Guest Fittings Online At Installation Parts Supply
Surprising fact: about 30% of pro installers say they save roughly an hour on each job when they switch to push-fit connectors that reduce tool use and leak-related callbacks.
That kind of efficiency is centralized at Installation Parts Supply. Customers can view full details and see original price next to current price for core items such as John Guest, tees, and check valves. The catalog highlights quick easy push-fit fittings designed for potable water and plumbing system builds.
You see typical pricing at a glance — union connectors from about $1.66 and check valves from about $9.05 — so crews can quickly view availability and bulk savings. Each product page shows full details original specs, thread information, and recommended tubing OD so plastic, brass, or stainless transitions stay compatible.
- Quickly compare original price against current price to speed up purchasing decisions.
- Discover push-fit solutions for water and plumbing setups with straightforward full details.
- Stock commonly covers 1/4″ and 3/8″ unions, tees, valves, and release tools.
- Bulk discounts often run from roughly 4% up to about 21%, depending on SKU.
- Installation Parts Supply backs it all with strong U.S. stocking and quick order processing.
Browse John Guest Fittings By Type For Fast, Leak-Resistant Connections
Browsing by part type speeds selection and reduces costly mismatches on the jobsite. Parts are grouped so buyers can view union connector, union elbow, union tee, and threaded adapter options in one quick scan.

Union Connectors, Union Elbows, & Union Tees
The listings show common sizes and materials with transparent price ranges. For example, a 1/4″ union connector begins around $1.66, whereas union elbows and tees run roughly $3.85–$4.70. Customers can compare price in seconds and review full product specs.
Reducing Unions & Reducing Tees For Mixed Tubing Sizes
Reducing unions such as 3/8 x 1/4″ allow installers to adapt lines without needing extra adapters. Reducing tee listings include dimensions so branch lines match typical RO and beverage tubing.
Plug-In Elbows, Stem Fittings, And Elbow Connectors
Elbow connector and plug-in elbow parts simplify direction changes. Stem reducers plus stem fittings let panel-mounted runs stay compact and tidy.
Threaded Adapters: Male And Female NPT/BSP Options
You’ll find threaded adapters in sizes ranging from 1/8″ to 3/8″. Buyers can pick male or female NPT and BSPP styles to match manifolds and accessories.
“Clear listings make it easy to pick the right part and cut down on time-consuming returns.”
| Type | Size | Typical Price |
|---|---|---|
| Union connector | 1/4″ | $1.66–$2.70 |
| Union elbow | 1/4″ / 3/8″ | $4.05 / $4.50 |
| Reducing union | 3/8 × 1/4″ | $2.29–$3.60 |
| Threaded adapter (BSPP) | 3/8 × 3/8 | $4.33 |
Why Choose Push-Fit Fittings From John Guest
When speed and reliability matter, push-to-connect solutions reshape how installers build lines. These connectors blend simple assembly with proven sealing technology, cutting the time spent on each joint.
Tool-Free, Quick Easy Installs With A Secure Lock
Speedfit and ProLock deliver quick easy assembly that often cuts install time by up to 40%. The design grips tubing and pipes with low insertion force and a dependable lock.
Installers can disconnect without damage, which reduces waste and rework. That reuse also helps teams stock fewer SKUs for common potable runs.
Twist-And-Lock And Superseal Technologies To Reduce Leaks
Twist-and-lock options improve retention where vibration or movement is an issue. Superseal adds double O-ring seals so leaks are far less likely.
ProLock is suitable for hot water and cold water in sizes from 3/8″ to 1″ and handles higher pressure well. Do not use Speedfit or ProLock for gas, fuel oil, or compressed air.
| Product Line | Best use | Key feature | Typical size |
|---|---|---|---|
| Speedfit | Quick potable runs | Push-to-connect sealing for plastic and copper | 1/4″–3/4″ |
| ProLock | Hot water plus higher-pressure lines | Strong lock with high-temperature resilience | 3/8″–1″ |
| Twist-and-Lock / Superseal | Vibration-prone lines | Double O-ring + twist retention | Wide range of OD sizes |
Installation Parts Supply highlights these technologies so customers can view specs and compare price quickly.
Shop Valves And Flow Control Parts To Complete Your System
Installation Parts Supply keeps core flow-control pieces for potable water and beverage lines on hand so crews can complete jobs without extra runs to suppliers. Shoppers can view quick specs and compare price before they add items to a cart.
Inline Shut-Off Valves With Matching Tank Valves
Inline shut-off valves make it easy to isolate sections for maintenance or routine service. Popular polypro shut-off valves start around $5.11 for 3/8″ and $5.71 for 1/4″.
Inline valve pricing usually falls around $6.00–$7.00 for 1/4″–3/8″ quick-connect sizes. With quick-connect ports, tank valves simplify tank hookups and keep plumbing steps clean and efficient.
Check Valves For Non-Return Protection
Add a check valve to prevent backflow into RO systems, coolers, and dispensers. A 3/8″ check valve with 0.3 psi crack pressure typically lists at about $9.05.
- Select john guest inline shut-off valves for isolation; typical price points are about $5–$7.
- Review full details original to verify material, part number, and pressure rating information.
- Ordering in bulk helps keep per-connection costs down for repeat projects and spare inventory.
| Component | Typical Price | Note |
|---|---|---|
| Polypro shut-off (3/8″) | $5.11 | Quick-connect style |
| Tank valve (quick-connect) | $7.00 | Easy tank hookup |
| Check valve 3/8″, 0.3 psi | $9.05 | Backflow prevention |
Shoppers can quickly view current price and availability, check details original price comparisons, and select valve john guest components that suit their system needs.
Popular Sizes In Stock: 1/4, 3/8, And 1/2 Tube
Most jobs use just three core tube sizes: 1/4″, 3/8″, and 1/2″, each suited to distinct flow needs. Installation Parts Supply keeps all three sizes ready to ship to support fast project turnaround.
Ideal Applications For 1/4 Inch Tubing And Fittings
1/4″ tube and tubing are ideal for RO outputs, fridge feeds, and beverage lines. This size saves space and fits easily in tight panels.
At 1/4″, union connectors usually cost $1.66–$2.70, while inline valves commonly run about $6–$7.
Where 3/8 Inch Tube Shines In Potable Water Systems
Tube 3/8 works well for longer runs or when a bit more flow and lower pressure drop are needed. A typical 3/8″ union connector lists at about $3.60.
Using 3/8 x 1/4 reducing unions ($2.29–$3.60) keeps transitions simple and lines ready for future changes.
Stepping Up To 1/2 Inch For Higher Flow
For higher flow branches and short main runs, 1/2″ tubing offers capacity without too much restriction. You’ll often see a 1/2″ male connector NPTF priced close to $3.27.
- Customers can view current price versus original price to catch bulk breaks.
- Tees, elbows, and valves at each of the three core sizes appear throughout the catalog.
- Shoppers can view full details original on pressure, temp, and materials for each part number.
| Size | Example part | Typical Price |
|---|---|---|
| 1/4″ | Union connector | $1.66–$2.70 |
| 3/8″ | Union connector | $3.60 |
| 1/2″ | Male connector NPTF | $3.27 |
Materials And Finishes Matched To Your Application
Choosing the right material for each joint keeps water quality high and service calls low. Installation Parts Supply helps buyers match body material to water quality, temperature, and local code.
Polypropylene And Acetal Choices For Potable Water
Polypropylene offers good chemical resistance and strong performance in cold and moderate temps. This plastic is cost-effective, lighter in weight, and still keeps seals dependable.
Quick-connects often rely on acetal due to its smooth collet feel and durable wear characteristics. It eases assembly and disassembly for routine service.
Brass And Stainless Steel Components Where Needed
Brass and stainless offer additional mechanical strength on exposed threaded transitions and high-stress locations. These materials also help meet specific code demands and corrosion concerns.
| Material | Best Use | Note |
|---|---|---|
| Polypropylene | Potable runs | Lightweight and chemically resistant |
| Acetal | Quick-connect fittings | Durable collet action |
| Brass / Stainless | Threaded transitions | Higher mechanical strength and durability |
For each SKU, customers can view full details, check price and availability, and confirm pipe and tubing compatibility. Bulk discounts frequently fall in the ~4% to 20%+ range, encouraging crews to standardize material kits.
Plumbing And Potable Water Applications
Quick-connect components speed plumbing chores and reduce downtime from sink stub-outs to fridge feeds. Installation Parts Supply backs residential and light commercial potable builds with fast U.S. shipping and clear listings, letting teams view price and availability before booking labor.
Hot And Cold Domestic Water Lines
JG Speedfit and ProLock cover hot cold water branches and fixture stub-outs. These lines handle domestic supply loops, appliance feeds, and short mains with sizes that match common needs.
Sticking with 1/4″, 3/8″, and 1/2″ sizes lets teams select the right pipe or tube fast and reduces guessing on site.
Connections For RO Systems, Beverage, And Refrigerators
For most RO systems, 1/4″ tubing usually runs from the tank to the faucet. 3/8″ tubing is useful for higher-flow dispensers or longer run lengths.
Beverage and fridge hookups work best with compact connectors that snap in place, leaving cabinet installs neat and easy to service.
- Durable seal and collet designs minimize leak callbacks and reduce rework time.
- By viewing price and standardizing kits, teams can reuse the same SKUs across multiple installs.
- OD ranges on catalog pages help ensure pipe, tubing, and connectors match on the first attempt.
| Use Case | Common Size | Benefit |
|---|---|---|
| Domestic supply branches | 1/2″, 3/8″ | Higher flow with fewer joints |
| RO feeds and refrigerator lines | 1/4″, 3/8″ | Compact routing and simple service |
| Beverage dispensers | 3/8″ | Stable flow on extended runs |
Heating And HVAC Uses With John Guest
Hydronic loops and light HVAC accessory lines often rely on quick-connect parts to simplify routine service and seasonal changeovers.
You’ll find guidance from Installation Parts Supply on where these connectors belong in central and underfloor heating circuits. Professionals can view ratings to confirm suitability for hot cold water systems before placing orders.
- Use these fittings in hydronic heating loops and HVAC water accessory lines to speed disassembly and maintenance.
- In mechanical rooms, twist-to-lock designs help resist the effects of thermal cycling and vibration.
- Compact connectors make re-routing pipes and tubing easier during purging or component swaps.
- Avoid use with gas, fuel oil, or compressed air; these are for water-based loops only.
- Transparent price and bulk options help facilities keep spares for peak-season repairs.
| Heating/HVAC Application | Common size | Note |
|---|---|---|
| Underfloor heating | 1/2″–1″ | Tool-free access for purging |
| Hydronic loop branches | 3/8″–3/4″ | Quick replacement of components |
| HVAC accessory manifolds | 1/4″–3/8″ | Tees, elbows, valves available |
Before purchase, Installation Parts Supply can help check part specs and local code fit, supporting reliable system performance after installation.
Tubing And Pipe Type Compatibility
Doing a clear compatibility check saves time and prevents costly on-site mismatches. Installation Parts Supply lists compatibility notes so crews can view which parts mate with each pipe type before ordering.
Easy Connections To Copper, CPVC, And PEX
Connecting to copper, CPVC, and PEX is straightforward with John Guest push-fit fittings. It makes mixed-material builds and remodel projects more straightforward.
These piping materials are all supported by Speedfit products for potable water. They are not rated for gas, fuel oil, or compressed air.
Tube Supports, Locks, And Clips To Secure Hot Water Lines
On hot water runs, tube supports and locking clips help maintain tube alignment. These accessories also help reduce stress caused by thermal expansion and vibration.
Locking clips, often starting at about $0.19, are featured on product pages so installers can view price and include them in their kits.
- Using the right lock and support improves retention in high-temp lines.
- Notes on the product pages explain when tube inserts or supports should be used for certain pipe types.
- Accessory packs reduce on-site trips by supplying clips, supports, and a few spare connectors in one delivery.
| Accessory Type | Compatible pipe | Typical Price | Use case |
|---|---|---|---|
| Locking clip | Copper, PEX, CPVC | $0.19 | Prevent accidental disconnection |
| Tube support insert | PEX and CPVC | $0.45 | Maintain inner diameter when heated |
| Pipe adaptor | Copper–to–PEX transitions | $1.75 | Transition between mixed materials |
| Support clamp | All compatible pipes listed | $0.95 | Secure runs and limit pipe movement |
Installation Parts Supply helps customers review compatibility and confirm parts so connections stay reliable on the first install.
Featured Connectors And Adapters Ready To Add To Cart
Curated adapters and connectors speed selection so teams spend less time hunting parts. Installation Parts Supply lists best-sellers that are ready to ship and easy to match to common jobs.
Male Connector NPTF And Conversion Adapters
They carry male connector NPTF choices such as 3/8 × 3/8 (PI011223S-X) from $2.26 and 1/2 × 1/2 (PI011624S-US) from $3.27. These fittings help bridge threaded transitions quickly.
Items such as the 15mm × 1/2 CTS union conversion connector typically list at about $3.51. Use them when mixing metric and CTS systems.
Faucet, Refrigerator, And Bulkhead Union Connectors
Bulkhead unions pass lines through panels cleanly — 1/4″ at $4.60 and 3/8″ at $5.90. Faucet and refrigerator connectors featuring 7/16″ UNS female threads typically cost around $3.65 for 1/4″ and $3.95 for 3/8″.
Before adding to cart, customers can view original price and current price, review availability, and view full details for each part number.
| Part Type | Example Item | Typical Price | Note |
|---|---|---|---|
| Male connector | 3/8 × 3/8 NPTF | $2.26 | For threaded transitions |
| Union connector (conversion) | 15mm × 1/2 CTS | $3.51 | Metric-to-CTS conversion fitting |
| Bulkhead union | 3/8″ | $5.90 | Panel pass-through |
| Faucet / refrigerator connector | 1/4″ QC × 7/16″ UNS female | $3.65 | Appliance hookup |
- Add a male connector for NPTF transitions quickly to finish connections faster.
- Pair union connectors for straight joins, and reserve bulkhead unions for panel pass-throughs.
- View full details to verify tube and pipe OD, thread form, and valve compatibility.
Build Reliable Water And Beverage Systems
Design teams can assemble clean, serviceable beverage lines fast with purpose-built quick-connect parts.
Users can select parts through Installation Parts Supply by entering part numbers or searching descriptions. They can view options that fit current tubing and verify sanitary specifications before placing orders.
In beverage and pure water work, john guest components are trusted for their simplicity and low likelihood of leaks. If a certain model is out of stock, alternatives like Mur-Lok can be recommended so projects stay on schedule.
- Trusted parts for beverage and filtration work that make maintenance quicker.
- Specify items by part number for accuracy, or search descriptions to browse compatible choices.
- Because assembly is quick easy, downtime during filter swaps and upgrades stays low.
- Straightforward price listings allow planners to build repeatable bills of materials.
- Consistent OD sizes make it easy to scale from single units to larger manifolds.
Using branching, reducing, and cornering parts leads to tidy, serviceable system layouts. Core union tee, reducing union, and elbow connector choices for common potable projects are showcased by Installation Parts Supply.
Guest Union Tee And Union Connector For Branching Lines
A guest union tee cleanly splits a run without requiring special tools. You’ll often find a 1/4″ union tee around $3.85 and a 3/8″ about $4.70. They help keep service access easy and sustain balanced flow in the line.
A union connector joins two tubes inline for quick reroutes or extensions. With typical 1/4″ union connectors ranging from $1.66–$2.70, they remain an economical choice for repeated builds.
3/8 x 1/4 John Guest Reducing Union For Transitions
The john guest reducing union for 3/8 x 1/4 transitions adapts smaller device inlets to larger supply lines. Prices commonly sit around $2.29–$3.60, so teams can compare price when quoting jobs.
Elbow connector choices keep tubing runs tidy around corners while reducing kinks and preserving pressure. Union elbows are listed at about $4.05 for 1/4″ and $4.50 for 3/8″.
| Component | Size/OD | Typical Price |
|---|---|---|
| Guest union tee | 1/4″ | $3.85 |
| Guest Union Tee | 3/8″ | $4.70 |
| Union Connector | 1/4″ | $1.66–$2.70 |
| Reducing Union | 3/8 × 1/4″ | $2.29–$3.60 |
| Union Elbow | 1/4″ / 3/8″ | $4.05 / $4.50 |
- Use a guest union tee when you need to branch lines cleanly and keep serviceability.
- Compare price across sizes to match flow, budget, and tube john standards.
- Check full and full details on materials and dimensions to verify compatibility in tubing and potable applications.
- Using repeatable part numbers helps streamline stocking routines and technician training.
Current Price Highlights With Bulk Savings
Clear price highlights help buyers quickly identify value parts and lock in savings on repeat projects.
Top Value Picks: Union Connectors And Reducing Unions
Shoppers can easily find standout value in these common parts. A Polypro union connector in 1/4″ usually starts around $1.66, and a 3/8″ union connector sits near $3.60.
The 3/8 × 1/4″ reducing union often falls to about price 2.29 in promotional periods. These items are ideal for kit builds and bulk buys.
Bulk Discounts On Check Valves, Valves, And Tools
You’ll generally find inline valves priced $6–$7 and a 3/8″ check valve (0.3 psi) near $9.05.
Locking clips starting at $0.19 and a release tools set near $13.07 qualify for tiered discounts as order quantities grow.
- Scan current price cards to compare original price and current price quickly.
- Bulk pricing often trims the original price by roughly 4–21%, depending on the SKU.
- male connector and female adapters usually show improved unit cost when ordered in larger quantities.
- tube 3/8 and tube john guest bundles make pricing kits for fleets simpler.
| Item | Typical price | Bulk Note |
|---|---|---|
| Union Connector 1/4″ | $1.66 | Bulk breaks at 25+ |
| Reducing Union 3/8 × 1/4″ | $2.29–$3.60 | Promo price often near price 2.29 |
| 3/8″ Check Valve | $9.05 | Volume discounts offered |
Installation Parts Supply structures pricing tiers so procurement teams can view full details and forecast budgets with confidence.
View Full Details Including Specs, Part Numbers, And Availability
With product pages providing specs, stock status, and exact part numbers, teams can order confidently without guessing.
Customers can view full details for each john guest item, including approvals, dimensions, and downloadable datasheets. That level of detail helps crews write accurate bids and verify compatibility prior to purchase.
Original Price Versus Current Price And Stock Status
Every SKU displays original price and current price side by side. Notes on bulk tiers reveal possible savings and guide planners to the best unit pricing.
Labels noting “In stock” or showing ETA help curb scheduling risk and move approvals along faster.
Comparing Items With Filters For Size, Body Material, And Application
- You can compare union connector, male connector, and female adapter options side by side by thread type and tube OD.
- Filters include size, body material, color/finish, and application tags (Potable Water, Plumbing, Central Heating).
- Teams can export part numbers to procurement systems to cut order errors.
| Feature | Shown on page | Benefit |
|---|---|---|
| Full Details | Specs, approvals, and datasheets | Supports accurate bids and installs |
| Price Display | Original price and current price side by side | Fast cost comparisons |
| Availability Status | In-stock label or ETA | Improved scheduling confidence |
Tips To Install Secure, Push-Fit Connections
Small preparation steps help push-fit connections perform like pro-grade joints. A few consistent habits recommended by Installation Parts Supply can lower leaks and callbacks. Follow simple habits to keep assembly quick easy and dependable on each run.
Cutting Square, Seating Fully, And Using Locking Clips
Cut tube square and deburr the end so the O-ring seats evenly. A poor cut can nick seals and cause leaks.
Mark the insertion depth first, then push until the tube is fully seated. Check by pulling back gently, then add a lock clip at critical joints for extra retention.
When To Use Twist-And-Lock Or Superseal
Use twist-and-lock fittings where vibration or movement is expected. This design adds retention while keeping assembly quick easy.
Choose Superseal where double O-ring protection is needed around equipment or critical service points. On soft tube and hot water lines, add supports to maintain steady sealing pressure.
“Cut square, seat fully, and use clips—these steps save time and service calls.”
- Avoid side-loading and support long spans to reduce stress on pipe and fittings.
- Keep parts clean; debris compromises seals and raises leak risk.
- Reference full details and view the rated temperature and pressure before using any fitting.
- Carry spare clips and release tools for quick field adjustments.
Why Buy John Guest Fittings From Installation Parts Supply
Buyers get a focused catalog built for speed. Unions, tees, elbows, valves, clips, and tools are grouped together so teams can locate parts quickly.
Broad Selection, Quick U.S. Shipping, And Helpful Support
Installation Parts Supply maintains deep stock levels for both common and specialty pieces. You’ll see many SKUs labeled with “Save up to X% with bulk pricing.”
U.S. shipping combined with quick order handling helps crews dodge job delays. The support team helps match parts to plumbing and water applications and can suggest Mur-Lok alternatives if an exact item is out of stock.
Easy Reorders By Part Number And Quick-View Shopping
Reordering by part number reduces errors and speeds procurement. Quick-view pages let buyers view specs, availability, and full details without leaving the catalog.
Filters make it easy to locate a male connector, female adapter, or other essentials and compare price before checkout.
| Key Benefit | Why It Matters | Illustration |
|---|---|---|
| Deep Assortment | Less downtime, fewer substitutions | Unions, tees, valves, release tools |
| Bulk Pricing | Lower unit cost for repeat orders | Save up to X% on common SKUs |
| Quick-view pages | Faster decisions thanks to visible specs and stock | View specs and current price on one screen |
| Expert support | Helps match part to job and budget | Alternative parts suggested where appropriate |
Conclusion
Finish projects more quickly by choosing parts that match specs, stock, and price at a glance. Installation Parts Supply catalogs john guest and john guest fittings across unions, tees, reducing unions, valves, adapters, and bulkhead unions, simplifying kit building.
Shoppers can view current price next to original price and view full details to confirm sizing and materials before checkout. The catalog highlights push-fit fittings plus accessories, making it simple to plan and order a complete system outfit.
Browse, compare, and order confidently today. With clear part numbers, bulk tiers, availability labels, and friendly support, teams can standardize kits, cut errors, and keep projects on schedule.








