Barb Connector

Pro Water Parts is a distributor of quality John Guest fittings.

John Guest offers a wide range of push-fit connectors, tube and other fluid control products for drinks dispense and pure water applications.

Hose barbs are cylindrical pieces or parts for attaching and securing of hoses (tubing). The barb-like rings on the cylindrical piece allow for an easy push-connection of flexible-plastic or rubber tubing that is not so easily disconnected.

Superseal is a special fitting designed to provide extra grip on hard steel, stainless steel and other polished metal tubing.

The Superseal design features a collet with integrally moulded stainless steel teeth similar to the standard Super Speedfit design, but incorporating an additional hand-operated nut and wedge shaped plastic washer to apply extra pressure to the collet and the double ‘O’ ring seals. This ensures that the collet teeth bite thoroughly into the tube to provide grip while at the same time, compressing the ‘O’ rings to further enhance sealing.

Like other John Guest fittings Superseal is suitable for potable liquids and other food quality applications.

Push-fit technology

Quick disconnection without the need for tools

Food Quality and suitable for potable liquids

Provides extra grip on stainless steel and other hard polished metal tubing

high chemical resistance

food Quality and suitable for potable liquids and pure water applications

not suitable for compressed air and vacuum applications

raw material:
acetal

superseal od:
1/4in, 5/16in, 3/8in

tube id:
1/4in

	Pressure	Pressure
Temperature	5/32″ – 5/16″ 4mm–8mm	3/8″- 1/2″ 10mm–22mm
Air
-20ºC	16 bar	10 bar
Potable Liquids and Air
+1ºC	16 bar	10 bar
+20ºC	16 bar	10 bar
+65ºC	10 bar	7 bar

Also suitable for vacuum

Depending on the tube used, under certain conditions fittings may be used at higher pressures and temperatures. Please refer to our Customer Services Department for guidance. Note 1 Bar = 14.5 PSIG.

Tube Types

Plastic Tube – Polyethylene, nylon and polyurethane conforming to the tolerances shown below. For soft tubing or thin wall tube we recommend the use of tube inserts.

Braided Tube – Use of Tube to Hose Stems listed on pages 11, 16, 18, 21 and 26 is essential when using tube. Use of clamps to retain braided tube on barbs is recommended.

Metal Tube (soft) – Brass, copper or mild steel conforming to the tolerances below.

Metal Tube (hard) – We do not recommend Super Speedfit fittings for hard metal or chromium plated tubes.

Tube Tolerances

Super Speedfit fittings are offered for tubes with outside diameters to the following tolerances.

Size (inches): 5/32 – 3/16 and 1/4 – 1/2

Tolerance (inches): +0.001 / -0.003 and +0.001 / -0.004

Size (mm): 4mm – 5mm and 6mm – 2mm

Tolerance (mm): +0.05 / -0.07 and +0.05 / -0.10