CIIR+EPDM Tubing
Tube: CIIR+EPDM — chlorinated butyl rubber with the lower gas permeation in our liquid cooling hose family
Color: Black or multiple colors — custom color-coding for supply/return lines
Outside braid: Polyester or stainless steel (Optional) — protection for exposed routing
Temperature: -40°C to +150°C — sub-zero startup to elevated coolant return
- Product Introduction
BESTYIELD Technology (Huizhou) Co., Ltd. is one of the leading manufacturers and suppliers of ciir+epdm tubing in China, also supports customized service. Welcome to wholesale bulk ciir+epdm tubing in stock here and get pricelist from our factory. For price consultation, contact us.
Features and Benefits
- Tube: CIIR+EPDM - chlorinated butyl rubber with the lower gas permeation in our liquid cooling hose family
- Color: Black or multiple colors - custom color-coding for supply/return lines
- Outside braid: Polyester or stainless steel (Optional) - protection for exposed routing
- Temperature: -40°C to +150°C - sub-zero startup to elevated coolant return
- Compliance: RoHS, REACH - global environmental regulations
- Flame resistance: HB, V1, V2, V0, VW-1, EN45545 - industrial to railway-grade
- Low extractables: Minimizes fluid contamination, ensures coolant purity in closed-loop
- Product service life: Exceeding 10 years in closed-loop service
- Fluid: coolants like PG25 and deionized glycol, air, phosphate ester
Detailed Description
CIIR (chlorinated butyl rubber) addresses this molecularly: chlorination introduces chlorine atoms onto the butyl backbone, creating a denser, more tortuous diffusion path, reducing permeation by 30–50% versus standard IIR. With EPDM's thermal stability, CIIR+EPDM maintains low permeation across -40°C to +150°C.
The 201 series is a low-pressure, high-flow solution prioritizing maximum I.D. for minimum pressure drop - ideal for gravity-feed return lines, overflow connections, and reservoir-to-manifold piping. Available from 1/8" to 4" I.D., the widest range in our liquid cooling family, enabling one hose type for both instrument branches and main headers.
Product Application
District cooling plants deploy the 201 series as secondary/tertiary loop piping, where 2"–4" diameters carry chilled glycol between exchangers, tanks, and manifolds at low pressure but high flow.
Data center secondary loops depend on it: between CDU and in-row units, gravity-driven return demands full-bore hoses with minimal pressure drop, and CIIR prevents coolant drift over 10+ year design life.
Industrial process headers use the 201 series to connect chiller outlets to distribution headers up to 4" I.D.
Cold storage facilities use large-diameter CIIR hoses to link evaporator banks to suction drums and receivers.
EV charging infrastructure uses the 201 series for circulation between rectifier cabinets and liquid-cooled cables, preventing thermal throttling during fast-charge sessions.
Product Parameters
|
Part |
Hose I.D. |
Hose O.D. |
Working Pressure |
Burst Pressure |
MIN. Bend Radius |
|||||
|
inch |
mm |
inch |
mm |
psi |
MPa |
psi |
MPa |
inch |
mm |
|
|
201-01 |
1/8 |
3.2 |
0.31 |
7.9 |
72.5 |
0.5 |
217.5 |
1.5 |
1-9/16 |
40 |
|
201-02 |
3/16 |
4.8 |
0.37 |
9.5 |
1-3/4 |
45 |
||||
|
201-03 |
1/4 |
6.3 |
0.50 |
12.7 |
2-9/16 |
65 |
||||
|
201-04 |
5/16 |
8.0 |
0.55 |
14.0 |
2-3/4 |
70 |
||||
|
201-05 |
3/8 |
9.5 |
0.63 |
15.9 |
3-1/8 |
80 |
||||
|
201-06 |
1/2 |
12.7 |
0.79 |
20.0 |
43.5 |
0.3 |
145 |
1.0 |
3-15/16 |
100 |
|
201-07 |
5/8 |
16.0 |
0.94 |
24.0 |
4-3/4 |
120 |
||||
|
201-08 |
3/4 |
19.0 |
1.06 |
27.0 |
5-5/16 |
135 |
||||
|
201-09 |
7/8 |
22.2 |
1.26 |
32.0 |
6-5/16 |
160 |
||||
|
201-10 |
1 |
25.4 |
1.39 |
35.4 |
7 |
178 |
||||
|
201-11 |
1-1/4 |
31.8 |
1.77 |
45.0 |
8-7/8 |
225 |
||||
|
201-12 |
1-1/2 |
38.1 |
2.00 |
50.8 |
10 |
254 |
||||
|
201-13 |
1-3/4 |
44.5 |
2.32 |
59.0 |
11-5/8 |
295 |
||||
|
201-14 |
2 |
50.8 |
2.76 |
70.0 |
13-3/4 |
350 |
||||
|
201-15 |
2-1/2 |
63.5 |
3.07 |
78.0 |
15-3/8 |
390 |
||||
|
201-16 |
3 |
76.2 |
3.54 |
90.0 |
17-11/16 |
450 |
||||
|
201-17 |
3-1/2 |
89.0 |
4.13 |
105.0 |
20-11/16 |
525 |
||||
|
201-18 |
4 |
101.6 |
4.72 |
120.0 |
23-5/8 |
600 |
||||
- Remarks: Inner and outer diameter sizes are customizable; parameters in parentheses represent the outside braided structure.
FAQ
Q1: What is the maximum continuous service temperature for the 201 series?
A1: CIIR+EPDM maintains full performance up to 80°C continuous. Short-term peaks of 125°C (up to 1 hour) are acceptable.
Q2: Can the 201 series be used for potable water cooling?
A2: CIIR+EPDM meets NSF/ANSI 61 for drinking water contact. For potable water use, we recommend our EPDM series with WRAS approval. The 201 series is optimized for glycol-based coolants.
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