Apollo Valves FAQ: Manufacturing, PEX-B Tubing, Part Numbers, and the Spec Questions We Get Weekly

I run quality and brand compliance for a plumbing and hardware distributor. Every spec sheet, sample, and first shipment gets reviewed before it reaches a customer — call it 300 line items a quarter. In 2024 I rejected about 18% of first deliveries for spec mismatches that would have shown up as callbacks three months later.

These are the eight questions that land on my desk most often about Apollo Valves, and about the parts that hang off them. Short answers, no fluff — jump to whichever one you need.

• Where are Apollo Valves made, and who actually manufactures them?
• What does an Apollo part number like APPW512 actually tell me?
• What should I verify before installing Apollo PEX-B tubing?
• RPZ, DCVA, or hose bibb vacuum breaker — which one do I need?
• Does the name on the valve body matter if the customer never sees it?
• What size is a hose clamp nut?
• What actually voids a valve warranty?
• Do the same rules apply to pressure washers and outdoor equipment?

Where are Apollo Valves made, and who actually manufactures them?

Apollo is a brand, not a factory. It sits under Aalberts Integrated Piping Systems — the business most of us still call Conbraco Industries — with its main plant and offices in Matthews, North Carolina. A big share of the bronze and brass valve lines is produced there, and that's the association most people have in their head when they search "Apollo valves manufacturer."

Here's the part that trips up buyers: a brand name is not a country of origin. Apollo covers a lot of product families — ball valves, check valves, safety relief valves, backflow preventers, gate valves, PEX fittings — and origin can differ from one line to the next. On federal, municipal, and some utility work, origin is a hard requirement, not a preference.

So don't go by the logo. Go by the carton marking, the submittal sheet, and the item page in the current catalog. Origin listings move between revisions, which means the answer you got on last year's job may not be the answer you get today. Confirm it with your distributor at the time you quote.

What does an Apollo part number like APPW512 actually tell me?

Honest answer: less than people think. Apollo numbers are structured — usually family, then size, then connection and options — but the pattern isn't consistent across every line, and suffixes are where the mistakes happen.

I've never been able to decode an Apollo number from memory, and I do this for a living. Treat the number as a lookup key, not a spec.

Pull three things for whatever SKU you're quoting, including something like APPW512 in the PEX-B tubing family:

1. The current technical data sheet or submittal sheet — not a distributor flyer, the manufacturer document.
2. The pressure and temperature ratings for the specific size. Ratings often step down as the body gets bigger.
3. The listing numbers that apply: NSF/ANSI/CAN 61 for potable water contact, NSF/ANSI 372 for lead content, plus the UPC/IAPMO listing if your inspector wants to see paper.

Then check the revision letter on the sheet against the carton. I had a 20-minute window before a truck left our dock last spring where the only thing that saved us was the suffix on the box matching the suffix on the PO. Numbers get revised. Cartons lag behind.

What should I verify before installing Apollo PEX-B tubing?

Four things, and none of them take long.

Fitting system. PEX-B is made by the silane method, which is a different crosslinking process than PEX-A (peroxide) or PEX-C (electron beam). Practically, that means PEX-B goes with crimp rings, stainless clamp rings, or compression/push fittings — not the expansion tool that PEX-A installers reach for out of habit. The tubing standards to check are ASTM F876 for the tubing and ASTM F877 for the system; insert fittings fall under ASTM F1807 (brass) or F2159 (plastic), and stainless clamps under F2098. If chlorinated water is in the picture, ask for the oxidative resistance test data under ASTM F2023.

UV exposure. PEX is not sunlight-stable. Keep it out of direct sun on exposed runs and check the maximum exposure window on the submittal — it's shorter than most people assume.

Support and bend radius. Follow the manufacturer's installation instructions, not the guy on the crew who's been doing it 20 years.

The clamp-to-fitting match. We had a return in 2024 where the clamp ring was the wrong size for the fitting. It held at 60 psi during the pressure test and let go on the first freeze-thaw. To be fair, that's an easy mistake to make at 4pm on a Friday — which is exactly why the spec sheet exists.

RPZ, DCVA, or hose bibb vacuum breaker — which one do I need?

The hazard level decides it, and your AHJ has the final word.

RPZ (reduced pressure zone assembly, ASSE 1013) is the high-hazard device. It handles backpressure and backsiphonage, and it typically requires annual testing and certification in most jurisdictions. Budget for that recurring cost, not just the hardware.

DCVA (double check valve assembly, ASSE 1015) is for low hazard only. It's the wrong choice the moment you're protecting against a health hazard.

Hose bibb vacuum breaker (ASSE 1052) goes on an outdoor spigot. And this is where pressure washers come up — a pressure washer connected to a spigot is a textbook cross-connection. If the washer has a downstream chemical injector, detergent can get pulled back into the potable line during a pressure drop. A hose bibb vacuum breaker on the spigot is the standard fix, and a lot of jurisdictions now require them on every outdoor hose outlet.

The red flag I look for: a project with an RPZ specified in the notes and a DCVA on the submittal. That's not a substitution, that's a code problem.

Does the name on the valve body matter if the customer never sees it?

Everything I read when I started said hidden parts are the place to save money. Nobody's rating your work on the ball valve behind the access panel. My experience says the opposite: the parts nobody sees are the ones that generate callbacks, and a callback is the only review most customers ever write.

Two years ago we bought a run of ball valves on price. The stem packing started weeping. The leak itself cost us a few hundred dollars in returns. The part that actually hurt was not having a test report to hand the contractor when he asked for one — that turned into a $14,000 rework conversation and a lot of apology.

The surprise wasn't the failure. It was how much of the value was in the paperwork — a data sheet, a listing number, a date code you can trace back. That's what the name on the body actually buys you, and it's the part you can't recover after the fact.

Granted, not every job needs the top of the line. A drain-down valve on a hose bib isn't the same risk as a main shutoff buried behind finished drywall. Match the spec to the consequence, and skip the agonizing.

What size is a hose clamp nut?

Two different numbers get called "the size," and that's the source of most of the confusion.

The hex. On a standard worm-drive clamp, the head you turn is a slotted hex — commonly 5/16" across the flats on general-purpose clamps, and 1/4" on the small ones. Measure across the flats with calipers rather than guessing from the band width. On T-bolt and nut-and-bolt clamps, the nut is usually metric: M5, M6, or M8.

The clamp range. It's printed on the band, something like 1/2" to 1-1/4". That range has to match the hose outside diameter with the fitting pushed in — not the inside diameter. That's the mistake I see most: someone grabs a clamp for a half-inch line and ends up with one sized for the ID, which is way too small once the barb is in there.

Bottom line: calipers on the hex, tape on the hose OD with the fitting installed, then buy the clamp range that brackets it.

What actually voids a valve warranty?

Terms are published per product line, so read the one for your SKU. But the same handful of things sink claims across the board:

• Running it outside the published pressure or temperature rating — including a temperature swing nobody planned for
• Media it wasn't intended for
• Freeze damage and water hammer
• Field modification: grinding, welding, swapping trim
• No proof of purchase, or a date code that doesn't reconcile with the invoice

That last one catches people. When proof of purchase is missing, many manufacturers measure the warranty period from the date of manufacture instead — so keep the carton label and the invoice together in the job file while the job is still open.

Also: warranty language gets revised. The version that applies to you is the one published when you bought the part, which is another reason to save the sheet and not just the receipt.

Do the same rules apply to pressure washers and outdoor equipment?

Half the questions at our counter aren't about anything we stock. Same three checks do the work anyway: who actually makes it, what does the written spec say, and what happens when it fails.

On pressure washer price — I won't quote a number, because the price tracks the pump, not the nozzle. Axial-cam pumps sit at the budget end and generally aren't rated for long continuous duty. Triplex pumps cost more and hold up better under daily use. If you're buying for a crew, the pump spec is the whole conversation; everything else is packaging. Check current pricing with the retailer, since it moves with the season.

On lawn mower warranty — there are usually two warranties, and people only read one. The engine manufacturer's coverage is often separate from the mower brand's, and both tend to hinge on maintenance records. Damage from stale fuel or a clogged cooling fin isn't a defect, and it gets excluded. The terms I pulled in Q1 2026 read that way; verify the current published terms for the specific model year before you promise a customer anything.

Same pattern every time. The spec sheet tells you what you're buying. The warranty tells you who's standing behind it. If you can't get either one in writing, that's your answer.