MQD / MBQD Quick Disconnect Coupling
The MQD/MBQD series quick disconnect couplings are developed in accordance with the NVIDIA MQD_MBQD specification and are certified as an NVIDIA RVL-recommended brand. Manufactured from high-grade SUS316L stainless steel, these couplings provide excellent corrosion resistance and long-term durability. The coupling consists of precision-matched male and female components, enabling leak-free hot connection and disconnection under fluid flow conditions. Red and blue silk-screen markings on the body clearly indicate cold-water supply and hot-water return lines, helping to prevent incorrect operation.
PRODUCT FEATURES：
◆ Designed in compliance with the NVIDIA MQD_MBQD specification。
◆ Certified as an NVIDIA RVL-recommended brand。
◆ Constructed from SUS316L stainless steel for superior corrosion resistance。
◆ Supports leak-free hot plugging under fluid flow for safe and convenient operation.
◆ Equipped with standard EPDM sealing rings, with optional sealing materials available for different media.
◆ Multiple connection configurations available for diverse application requirements.
◆ Red and blue color markings minimize the risk of incorrect installation.
◆ Validated for 5,000 plug-and-unplug cycles, ensuring a service life of up to ten years.
◆ 100% air-tightness tested.
◆ 100% hot-connection performance tested under fluid flow conditions.
TECHINCAL SPECIFICATION：
|
Product Model |
MQD/MBQD02 |
MQD/MBQD03 |
MQD/MBQD04 |
|
Nominal Diameter |
02 |
03 |
04 |
|
Body Material |
SUS304 |
SUS304 |
SUS304 |
|
O-Ring Material |
EPDM |
||
|
Max. Operation Pressure |
100 PSI |
||
|
Burst Pressure |
300 PSI |
||
|
Leak Rate |
<1x10 -6@6.9bar |
<1x10 -6@6.9bar |
<1x10 -6@6.9bar |
|
Max. Flow Rate |
4L/min |
6L/min |
7L/min |
|
Compatible Coolant |
PG25/DI-Water |
||
|
Operating Temp. Range |
17 ~ 65℃ |
||
|
Min. Cv Value |
0.3 |
0.8 |
1.0 |
|
Max. Plug/Unplug Leakage @0psi |
≤0.020ml |
≤0.023ml |
≤0.025ml |
|
Service Life |
10 years |
||
PRODUCT LIST：
|
No. |
Series |
Plug/Socket |
Part Number |
Product Model |
Interface Specification |
|
1 |
MQD02 |
Plug |
202353418S |
MQD02-PS1-1/4F1B1 |
Barbed Fitting for 1/4" Rubber Hose, Blue Marking |
|
2 |
202353419S |
MQD02-PS1-1/4F1R1 |
Barbed Fitting for 1/4" Rubber Hose, Red Marking |
||
|
3 |
202353420S |
MQD02-PS1-1/4F1B2 |
90° Barbed Elbow Fitting for 1/4" Rubber Hose, Blue Marking |
||
|
4 |
202353421S |
MQD02-PS1-1/4F1R2 |
90° Barbed Elbow Fitting for 1/4" Rubber Hose, Red Marking |
||
|
5 |
Socket |
202353422S |
MQD02-SS2-UNF7/16-20F1B1 |
7/16-20UNF-2A External Thread, Blue Marking |
|
|
6 |
202353423S |
MQD02-SS2-UNF7/16-20F1R1 |
7/16-20UNF-2A External Thread, Red Marking |
||
|
7 |
MQD03 |
Plug |
202352953S |
MQD03-PS1-5/16F1B1 |
Barbed Fitting for 5/16" Rubber Hose, Blue Marking |
|
8 |
202352954S |
MQD03-PS1-5/16F1R1 |
Barbed Fitting for 5/16" Rubber Hose, Red Marking |
||
|
9 |
202352957S |
MQD03-PS1-5/16F1B2 |
90° Barbed Elbow Fitting for 5/16" Rubber Hose, Blue Marking |
||
|
10 |
202352956S |
MQD03-PS1-5/16F1R2 |
90° Barbed Elbow Fitting for 5/16" Rubber Hose, Red Marking |
||
|
11 |
202353413S |
MQD03-PS2-UNF7／16-20F1B2 |
7/16-20UNF-2A External Thread, Blue Marking |
||
|
12 |
202353414S |
MQD03-PS2-UNF7／16-20F1R2 |
7/16-20UNF-2A External Thread, Red Marking |
||
|
13 |
202353406S |
MQD03-PS1-UNF7/16-20F1B1 |
7/16-20UNF-2A External Thread, Blue Marking |
||
|
14 |
202353407S |
MQD03-PS1-UNF7/16-20F1R1 |
7/16-20UNF-2A External Thread, Red Marking |
||
|
15 |
202353884S |
MQD03-PS2--G1/4F1B1 |
G1/4" External Thread, Blue Marking |
||
|
16 |
202353885S |
MQD03-PS2--G1/4F1R1 |
G1/4" External Thread, Red Marking |
||
|
17 |
Socket |
202353410S |
MQD03-SS2-G1/4F1B1 |
G1/4" External Thread, Blue Marking |
|
|
18 |
202353412S |
MQD03-SS2-G1/4F1R1 |
G1/4" External Thread, Red Marking |
||
|
19 |
MQD04 |
Plug |
202353434S |
MQD04-PS2-UNF7/16-20F1B1 |
7/16-20UNF-2A External Thread, Blue Marking |
|
20 |
202353435S |
MQD04-PS2-UNF7/16-20F1R1 |
7/16-20UNF-2A External Thread, Red Marking |
||
|
21 |
202353379S |
MQD04-PS2-UNF7／16-20F1B2 |
7/16-20UNF-2A External Thread, Blue Marking |
||
|
22 |
202353380S |
MQD04-PS2-UNF7／16-20F1R2 |
7/16-20UNF-2A External Thread, Red Marking |
||
|
23 |
202354135S |
MQD04MINI-PS3-UNF9/16-18F1B1 |
9/16-18 UNF-2B Internal Thread, Blue Marking |
||
|
24 |
202354136S |
MQD04MINI-PS3-UNF9/16-18F1R1 |
9/16-18 UNF-2B Internal Thread, Red Marking |
||
|
25 |
Socket |
202353385S |
MQD04-SS2-G3/8F1B1 |
G3/8”External Thread, Blue Marking |
|
|
26 |
202353386S |
MQD04-SS2-G3/8F1R1 |
G3/8”External Thread, Red Marking |
||
|
27 |
202354139S |
MQD04MINI-SS2-G3/8F1B1 |
G3/8”External Thread, Blue Marking |
||
|
28 |
202354140S |
MQD04MINI-SS2-G3/8F1R1 |
G3/8”External Thread, Red Marking |
||
|
29 |
MQDB02 |
Plug |
202353416S |
MQDB02-PS-F1W1 |
/ |
|
30 |
Socket |
202353417S |
MQDB02-SS2-UNF716-20F1W1 |
7/16-20UNF-2A External Thread |
|
|
31 |
MQDB03 |
Plug |
202353405S |
MQDB03-PS-F1W1 |
/ |
|
32 |
Socket |
202353411S |
MQDB03-SS2-G1/4F1W1 |
G1/4"External Thread |
|
|
33 |
MQDB04 |
Plug |
202353365S |
MQDB04-PS-F1W1 |
/ |
|
34 |
202354200S |
MQDB04MINI-PS-F1W1 |
/ |
||
|
35 |
Socket |
202353371S |
MQDB04-SS2-G3/8F1W1 |
G3/8External Thread |
|
|
36 |
202354397S |
MQDB04-1-SS2-G3/8F1W1 |
G3/8External Thread |
