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Soren20061112
JINGCHENG
3917290000 3904610000 3917390000
JINGCHENG Braided Convoluted PTFE Hose (series JCC-11100-PTFE) uses a PTFE hose with corrugated inner and outer walls under one layer of high-strength 304 stainless steel braid, giving a very small bend radius for pharmaceutical, food and chemical transfer from -70°C to +200°C. This page sets out daily, weekly and shutdown checks for the braided convoluted hose, a table of findings that call for replacement, and how to choose the replacement size from the catalog table.
The JINGCHENG JCC-11100-PTFE hose uses a PTFE hose with corrugated inner and outer walls as the inner layer, covered with one layer of high-strength 304 stainless steel braided wire as the reinforcing outer layer. It has a very small bend radius and works from -70°C to +200°C, which is why it is chosen for flexible connections in the pharmaceutical, food and chemical industries. Lines like these are often moved, flexed and cleaned many times, so a simple inspection and replacement schedule protects both the process and the people around it. This page sets out that schedule using the catalog limits for each size.
Every inspection compares the hose and its operating conditions with 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-11104-PTFE | 1/4" | 5.8 | 8.3 | 10.3 | 2001.0 | 13.8 | 8004.0 | 55.2 | 0.39 | 10 |
JCC-11108-PTFE | 5/16" | 7.8 | 10.3 | 12.5 | 1957.5 | 13.5 | 7830.0 | 54 | 0.59 | 15 |
JCC-11110-PTFE | 3/8" | 9.6 | 12.1 | 14.1 | 1631.3 | 11.3 | 6525.0 | 45 | 0.79 | 20 |
JCC-11113-PTFE | 1/2" | 12.5 | 13.5 | 17.5 | 1540.6 | 10.6 | 6162.5 | 42.5 | 0.98 | 25 |
JCC-11116-PTFE | 5/8" | 15.7 | 19.9 | 22.5 | 1395.6 | 9.6 | 5582.5 | 38.5 | 1.18 | 30 |
JCC-11119-PTFE | 3/4" | 19.9 | 23 | 25.5 | 1141.9 | 7.9 | 4567.5 | 31.5 | 2.36 | 60 |
JCC-11125-PTFE | 1" | 24.8 | 35.7 | 37.5 | 725.0 | 5.0 | 2900.0 | 20 | 3.35 | 85 |
JCC-11132-PTFE | 1-1/4" | 32 | 42 | 45 | 598.1 | 4.1 | 2392.5 | 16.5 | 3.94 | 100 |
JCC-11138-PTFE | 1-1/2" | 38 | 48 | 50.5 | 525.6 | 3.6 | 2102.5 | 14.5 | 6.10 | 155 |
JCC-11150-PTFE | 2" | 50 | 60 | 63 | 453.1 | 3.1 | 1812.5 | 12.5 | 7.87 | 200 |
Data source: JINGCHENG PTFE Hose Catalog (JCC-11100-PTFE Series). Operating temperature range: -70°C to +200°C. All specifications can be customized according to customer parameters.
Two figures deserve special attention during maintenance:
Temperature ceiling: this braided convoluted series is rated to +200°C, lower than the +260°C of our smooth bore braided hoses. Check that cleaning and process temperatures stay inside -70°C to +200°C.
Working pressure by size: from 13.8 MPa at 1/4" down to 3.1 MPa at 2". Burst pressure is about four times working pressure and is not an operating limit.
Look for leaks or wet spots at each end connection.
Check that the hose has not been pulled into a bend tighter than its catalog radius, from 10 mm at 1/4" to 200 mm at 2".
Make sure the hose is not resting on hot surfaces, sharp edges or moving parts.
Report any unusual noise, vibration or flow change on the line.
Inspect the 304 braid along the full length for broken, frayed or flattened wires.
Look for kinks or permanent deformation, especially near the fittings where flexing is concentrated.
Confirm that hose supports and clamps are still in place on long runs.
Check that the hose has not been twisted during reconnection after cleaning.
Disconnect and drain the hose completely; the corrugated bore can hold residue, so flush it thoroughly with a cleaning medium compatible with PTFE.
Inspect the inside of the hose ends for discolouration or damage to the PTFE.
Inspect fittings for corrosion, thread damage or loose crimping.
Record the hose location, size, installation date and findings.
Finding | Action |
|---|---|
Broken or frayed braid wires | Replace the hose |
Leak at a fitting that does not stop after re-seating | Replace the assembly |
Kink or flattened section | Replace and correct the routing |
Hose operated above its catalog working pressure | Replace and re-size |
Hose exposed above +200°C | Replace and review the process temperature |
When replacing a hose, compare the new duty with the table instead of simply copying the old part:
If pressure has increased, a smaller bore keeps a higher rating; for example 1/2" is rated at 10.6 MPa while 1" is rated at 5.0 MPa.
If the hose must fit a tighter space, check the bend radius first: 25 mm at 1/2" against 85 mm at 1".
Keep the same inner diameter where flow rate matters, since the convoluted bore already gives more resistance than a smooth bore.
It is good practice to keep spare JCC-11100-PTFE hoses for critical positions so a damaged hose can be changed during a short stop. We supply ten standard sizes from 1/4" to 2", and all specifications can be customized to customer parameters. Send us the size, length, end fittings, medium and temperature, and our engineers will confirm the replacement.
