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Soren20061112
JINGCHENG
3917290000 3904610000 3917390000
JINGCHENG Smooth Bore Convoluted Braided PTFE Hose (series JCC-21100-PTFE) has a smooth inner wall, a corrugated outer wall and one layer of 304 stainless steel braid, making it negative-pressure resistant, easy to clean and tight-bending for food, cosmetic, chemical and pharmaceutical lines from -70°C to +260°C. This page explains six failure patterns — over-pressure, kinking, damage under vacuum, twisting, temperature excursions and abrasion — what each looks like, how to prevent it with the catalog figures, and a quick diagnosis table.
The JINGCHENG JCC-21100-PTFE hose has a PTFE hose with a smooth inner wall and corrugated outer wall as the inner layer, covered with one layer of 304 stainless steel braided wire as the reinforcing outer layer. The catalog describes it as resistant to negative pressure, easy to clean and with a small bend radius, rated from -70°C to +260°C for delivery in the food, cosmetics, chemical and pharmaceutical industries. When a hose of this type fails early, the cause can usually be traced to one of a few operating conditions. This page explains each failure pattern, what it looks like and how to prevent it, using the catalog figures.
Part No. | Nominal Size | Inner Diameter (mm ±0.3) | Tube Outer Diameter (mm ±0.3) | Braided Outer Diameter (mm ±0.2) | Working Pressure (psi) | Working Pressure (MPa) | Burst Pressure (psi) | Burst Pressure (MPa) | Min. Bend Radius (inch) | Min. Bend Radius (mm) |
|---|---|---|---|---|---|---|---|---|---|---|
JCC-21106-PTFE | 1/4" | 6.8 | 8.35 | 9.6 | 1276 | 8.8 | 5104 | 35.2 | 0.75 | 19 |
JCC-21108-PTFE | 5/16" | 7.9 | 10.3 | 10.6 | 1218 | 8.4 | 4872 | 33.6 | 0.75 | 19 |
JCC-21110-PTFE | 3/8" | 10 | 11.93 | 13.5 | 1305 | 9 | 5220 | 36 | 0.98 | 25 |
JCC-21113-PTFE | 1/2" | 13.6 | 15.1 | 17.5 | 870 | 6 | 3480 | 24 | 1.50 | 38 |
JCC-21116-PTFE | 5/8" | 16.7 | 18.3 | 21.4 | 725 | 5 | 2900 | 20 | 1.97 | 50 |
JCC-21119-PTFE | 3/4" | 19.8 | 22 | 24.2 | 609 | 4.2 | 2436 | 16.8 | 2.48 | 63 |
JCC-21125-PTFE | 1" | 26.4 | 29.4 | 31.7 | 580 | 4 | 2320 | 16 | 2.95 | 75 |
JCC-21132-PTFE | 1-1/4" | 31.75 | 35.5 | 37 | 362.5 | 2.5 | 1450 | 10 | 3.15 | 80 |
Data source: JINGCHENG PTFE Hose Catalog (JCC-21100-PTFE Series). Operating temperature range: -70°C to +260°C. All specifications can be customized according to customer parameters.
What it looks like: a leak or rupture in the hose body, often after a pressure spike.
Why it happens: the system pressure exceeded the working pressure for the size. Working pressure falls as the bore grows, from 9 MPa at 3/8" and 8.8 MPa at 1/4" down to 4 MPa at 1" and 2.5 MPa at 1-1/4".
Prevention: size the hose by working pressure, include pressure spikes from pumps and valves, and treat the burst pressure (about four times working pressure) only as a safety margin.
What it looks like: a flattened or creased section, reduced flow and braid damage at the bend.
Why it happens: the route forced the hose tighter than its minimum bend radius, which is 19 mm at 1/4" and 5/16", 25 mm at 3/8", 38 mm at 1/2", 50 mm at 5/8", 63 mm at 3/4", 75 mm at 1" and 80 mm at 1-1/4".
Prevention: check the radius at the hose centreline during design, and add length rather than forcing a bend.
What it looks like: a deformed section on the suction side of a pump.
Why it happens: the hose is designed to resist negative pressure, but a kink, crushing load or damaged braid weakens that resistance.
Prevention: keep suction lines free of tight bends and external loads, and inspect them more often than pressure-side lines.
What it looks like: leaks at the end connection or early braid wear, often in a spiral pattern.
Why it happens: the hose was twisted while the end nuts were tightened, or it was installed between moving parts that rotate it in service.
Prevention: hold the hose body while tightening, align the hose before final assembly, and route it so that movement bends rather than twists it.
What it looks like: deformation of the PTFE liner or leaks at the fittings after hot cleaning or a process upset.
Prevention: keep both process and cleaning temperatures within -70°C to +260°C.
What it looks like: worn or broken braid wires where the hose touches equipment.
Prevention: route away from sharp edges and moving parts, and support long runs so the hose does not sag or rub.
Symptom | Most likely cause | First check |
|---|---|---|
Rupture in hose body | Over-pressure | Peak system pressure vs. catalog working pressure |
Flattened or creased section | Bend tighter than catalog radius | Route geometry |
Deformed suction line | Vacuum combined with kink or load | Bends and supports on suction side |
Leak at fitting | Twist or poor assembly | Alignment and fitting condition |
Worn braid | Abrasion | Contact points along the route |
The easy-clean smooth inner wall makes this hose a good choice for lines that are cleaned often, but only if the size, route and temperature match the catalog. Send us your medium, pressure, temperature, size, length and fitting details, and our engineers will confirm the specification; all parameters can be customized to customer requirements.
