Copeland 998-0034-16 Adapter Kit

Not every Rotalock valve is a big one - a lot of smaller reciprocating and low-HP scroll compressors use a compact 1"-14 Rotalock thread, and this is the adapter that steps it down to a 5/8" I.D. stub tube. The Copeland 998-0034-16 is built for exactly that transition, letting you land a standard 5/8" copper suction or liquid line on a compressor valve that wasn't sized for it.

It's the genuine OEM Copeland kit, not a universal fitting stamped out to a rough dimension - machined brass body, correct 14 TPI thread pitch (finer than the 12 TPI used on the larger adapters in this family), and it ships with the Rotalock seal ring so the connection is pressure-tight straight out of the bag.

Key Benefits

• Compact Rotalock Thread: 1"-14 thread pitch matches smaller-frame Copeland Rotalock valves - note this is a finer 14 TPI thread, not the 12 TPI used on the larger 998-0034 adapters.
• 5/8" Stub Tube I.D.: Sized for standard 5/8" O.D. copper lines, ready for a straight solder joint.
• Seal Included: Ships with the correct Rotalock gasket/seal ring for a pressure-tight connection.
• OEM Brass Construction: Machined threads seat correctly the first time - no cross-threading a soft aftermarket casting.

Common Questions

• Does this include the seal? Yes - the 998-0034-16 kit ships with the Rotalock seal ring needed for a pressure-tight connection.
• Is the thread the same as the other adapters in this family? No - this one uses a 1"-14 thread, a finer pitch than the 12 TPI Rotalock thread used on the larger 998-0034 adapters. Double-check the thread count on the compressor valve before ordering.
• Will this fit a non-Copeland compressor? Any valve using a matching 1"-14 male Rotalock thread will accept this adapter, regardless of compressor brand.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.