Press vs Threaded vs Grooved — Apollo Connection Type Guide

Choosing the wrong connection method costs time on the job and money in callbacks. Each method has clear strengths and limitations. This guide breaks down press-fit, threaded, and grooved connections using Apollo and Shurjoint products so you can make the right call for each application.

Press-Fit (ApolloPress / PowerPress / SmartPress)

Press connections create a permanent, leak-free joint in seconds using a hand-held or battery-powered press tool. No open flame, no threading machine, no waiting for solder to cool. Apollo offers three press systems:

• ApolloPress — Copper pipe, 1/2"–4". Used in domestic water, HVAC, and commercial plumbing. Bronze and brass fittings and valves.
• PowerPress (89FV) — Carbon steel pipe, 1/2"–2". Used in chilled water, hot water, HVAC, compressed air, and fire suppression.
• SmartPress (86V) — 304/316 stainless steel pipe (Schedule 5S/10S), 1/2"–2". Used in pharmaceutical, food service, laboratory, and high-purity applications.

Advantages: Fastest installation, no hot work permits, no special skills required, consistent quality, no flux or solder contamination, works in occupied buildings.

Limitations: Requires press tool investment. Limited to 1/2"–4" (copper) or 1/2"–2" (CS/SS). Not suitable for gas in most jurisdictions unless specifically listed.

→ Shop Apollo Press Fittings & Valves

Threaded (NPT)

NPT threaded connections are the baseline for commercial plumbing and industrial piping in sizes 1/4"–3". Cut threads into pipe using a threading machine, apply thread sealant or PTFE tape, and make up the joint. All standard Apollo bronze, brass, and stainless steel ball valve series use FNPT connections.

Advantages: No special tools beyond a threading machine. Universal compatibility. Serviceable and re-makeable. Standard on virtually all valves, instruments, and equipment.

Limitations: Slower than press-fit. Threading machine required. Not ideal above 3" (transition to flanged or grooved). Thread sealant selection matters for chemical and gas service.

→ Shop Apollo Threaded Ball Valves

Grooved (VSH Shurjoint)

Grooved connections use a mechanical coupling that locks onto a groove cut or roll-formed into the pipe end. VSH Shurjoint couplings, elbows, tees, and reducers are designed for fire protection, HVAC, industrial, and large-diameter commercial systems typically 1-1/4" and larger.

Advantages: Fast installation on larger pipe without welding. No hot work. System flexibility — grooved joints accommodate pipe movement and vibration. Fully serviceable without cutting pipe. Dominant method on fire protection mains 2" and above.

Limitations: Requires grooving equipment (cut groove or roll groove). Couplings add to pipe OD — verify clearances. Gasket selection critical for the service fluid.

→ Shop VSH Shurjoint Grooved Fittings

Which Method Should I Use?

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