Bulkhead Fittings

The PPI Stem Adapter (also known as a male-thread stem straight fitting) is a specialized tubing adapter. Built with a male threaded port and a rigid insertion stem, it serves as a bridge to connect threaded components directly to PE tubing. This eliminates the need for complex multi-part transitions, simplifying system installation and maintenance while ensuring consistent water flow.

 

 

Material	Tube Compatibility	O-Ring	Fluid	Burst pressure	Working Pressure	Temperature
POM	Fit PE hose	NBR	Water	≥2.76MPa	0.1-1.2MPa	≤40℃

Note:

1.The test temperature is 0-25℃;

2. Not suitable for corrosive media such as strong acid and alkali.

 

 

(Custom sizes are available upon request. Please contact us for specifications not listed here.)

 

1.Straight Bulkhead Fitting

Designed for pipe installation through panels or cabinets, this bulkhead fitting features nut locking structure for stable installation.

Type	Model		NOTE	Type	Model		NOTE
	Tube (Inch)	Tube (Inch)			Tube (mm)	Tube (mm)
PPM0404	1/4	1/4	Φ16.5mm or 15.0mm	PPM06-06	06	06	Φ16.5mm or 15.0mm
PPM0504	5/16	1/4	Φ20.0mm	PPM08-06	8	6	Φ20.0mm
PPM0505	5/16	5/16	Φ20.0mm	PPM08-08	8	8	Φ20.0mm
PPM0604	3/8	1/4	Φ20.0mm	PPM10-06	10	6	Φ20.0mm
PPM0606	3/8	3/8	Φ20.0mm	PPM10-10	10	10	Φ20.0mm

 

2.Double Bulkhead Union

The dual bulkhead push-in fitting features an integrated mounting plate, enabling two pipelines to pass through the panel in a single installation for improved efficiency.

Type	Model
	Tube (Inch)	Tube (Inch)
PPMT04040404	1/4	1/4

 

3.Bulkhead through connector

The straight bulkhead push-in fitting offers a straight-line piping solution for single-hole panel penetration with a compact, one-piece structure ideal for tight installation spaces.

Type	Model
	Tube (Inch)	Tube (Inch)
PPUM0404	1/4	1/4

Packing：

1.PE bag and double corrugated carton packaging;

2.Carton size：35*25*35cm;

3.Packaging quantity differs among models. Please check with our customer service.

 

 

 

• Cut tubing cleanly and deburr before insertion.
• Tighten the thread moderately; avoid over-tightening.
• Inspect for leaks after pressure/temperature changes.
• Use only with non-corrosive liquids.
• When disassembling, press release ring evenly and pull tube straight out.

 

 

This series of POM bulkhead push-in fittings includes nut-type straight, straight and dual bulkhead models, designed for pipe-through-panel installation in water treatment equipment. Made of food-grade POM with tool-free quick connection, they meet different single-line and dual-line panel installation needs.