SERVICE-BAR-3-S-T – SERVICE VALVE (3/8)

A service valve is brazed onto the refrigerant line and gives you an access point for charging refrigerant, pulling a vacuum, or isolating a section of the system for service. This one has a 3/8″ ODF (outside diameter flare) connection and works with common refrigerants including R-22 and R-410A.

Specs: 3/8″ ODF, braze-on installation, for charging and vacuum service

Replaces: 0151R00187S, SERVICE-BAR-3-S-T

Fits: 3/8″ OD copper refrigerant lines. Universal — works on all HVAC brands and systems.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

• TypeService valve fitting or adaptor

Fits these models

• SERVICE-BAR-3-S-T

What size are HVAC service fittings?

1/4 inch flare is the standard service port on residential equipment. Most of the adaptors and caps here step between 1/4 inch and other sizes so you can connect gauges, a recovery machine or a vacuum pump.

Why do I need a left-hand thread adaptor?

A2L refrigerants - R-454B and R-32 - use LEFT-HAND (reverse) threaded cylinder connections. It is a deliberate keying change so A2L equipment cannot be cross-connected to older refrigerant. Without the adaptor a standard hose simply will not start on the tank.

Does the cap actually matter?

Yes. The cap is the primary seal on a service port, not the Schrader core. The core is a valve; the cap with its gasket is what holds refrigerant in over years. A missing cap is a slow leak you will not find with a sniffer for a long time.

What is a core removal tool for?

Taking the Schrader core out so you can pull a proper vacuum through a full-bore path instead of through a tiny valve. On anything bigger than a small system it is the difference between a real vacuum and a long afternoon.

Male or female - how do I tell?

Male threads are on the outside of the fitting, female on the inside. The listings here spell out each end, for example 1/4" male to 1/2" female, so you can match what you already have.

Do you stock these?

On the shelf at 10226 Plano Rd, Suite 104 in Dallas.