The shut-o diaphragm valves BML and BMT
are designed for installation in the liquid,
suction and hot gas lines of refrigeration
circuits, in order to open and to shut o inner
refrigerant ow path by operating the
handwheel.
BML valves can be delivered with are, ODF
solder or ODF solder with extended ends.
In the same product category, BMT 6 is a threeway manual shut-o valve with similar
characteristics.
Features
• Fitted with three stainless steel diaphragms
that prevent leakage throughout the
operating life of the valve.
• Valve plate of polyamide nylon to give
complete shut-o with minimum torque.
• Valve cover with counter-seat to prevent the
ingress of moisture.
Environmental transport/storage
temperature and humidity
-40 – 65 °C /-40 – 150 °F
Air humidity: RH≤95%
Shut-o diaphragm valve, Types BML and BMT
Applications
Application
Typical applications for BML and BMT valves are:
• Cold room
• Chiller
• Heat pump
• Transport refrigeration
Figure 1: Application
Media
Table 1: Media features
NOTE:
• For a complete list of approved refrigerants, visit http://store.danfoss.com/ and search for individual code
numbers, where refrigerants are listed as part of product details.
• This product is approved for R290, R516A, R600, R600a, R1234ze(E), R1234yf and R1270 by ignition source
assessment in accordance to standard EN ISO 80079-36.
• Flare connection is only approved for A1 and A2L refrigerants.
The shut-o diaphragm valves are tted with three diaphragms of stainless steel which ensure long operating life.
BM valves are available in straightway, and threeway versions (BMT). The side connection of the three-way BMT can
be shut o, but the end connections will always remain open. The BM can be tted with a mounting bracket. Valve
body, cover and spindle are made of brass, the handwheel (3) of coloured plastic. BM valves have a triple diaphragm
seal (8) which is designed in such a way that the tension in the diaphragms lift the valve plate from the seat when
the valve is opened.
The sealing ring itself is made of nylon and gives complete shut-o when the handwheel is lightly tightened. The
thrust pad (7) prevents direct contact between spindle (5) and diaphragms (8). This also contributes to increased
valve life. The spring (9) is able to hold the valve open at operating pressures down to -1 bar (pe). The counter-seat
in the cover (6) prevents the ingress of moisture in fully open position. When the valve is opened, the pressure on
the outlet side must not exceed the pressure on the inlet side by more than 1 bar.
Dimensions and weights
Dimensions and Weights
We have chosen to show dimensions of the major versions.
You will nd downloadable dimension drawings for individual code numbers on Danfoss store as part of the Visuals
tab for individual code numbers.
Weights also dier depending on the design of the individual code numbers. Weights are available as part of the
technical data for individual code numbers on Danfoss store.
Standard BML versions are with connection types are, ODF solder or ODF solder with extended ends in a wide
variety of connection sizes. BMT versions are with are connection.For details on availability, see Ordering section.
¼ in x ¼ in
⅜ in x ⅜ in
½ in x ½ in
⅝ in x ⅝ in
¾ in x ¾ in
ODF solder extended end +
are
ODF solder with extended end
Flare
6 mm x ¼ in
¼ in x ¼ in
ODF solder extended ends
ODF solder with extended end
ODF solder with extended end
6 mm x 6 mm
10 mm x 10 mm
12 mm x 12 mm
16 mm x 16 mm
22 mm x 22 mm
¼ in x ¼ in
⅜ in x ⅜ in
½ in x ½ in
⅝ in x ⅝ in
⅞ in x ⅞ in
ODF solder
ODF solder
ODF solder
6 mm x 6 mm
10 mm x 10 mm
12 mm x 12 mm
16 mm x 16 mm
18 mm x 18 mm
22 mm x 22 mm
¼ in x ¼ in
⅜ in x ⅜ in
½ in x ½ in
⅝ in x ⅝ in
¾ in x ¾ in
⅞ in x ⅞ in
Type
Connection
Type
SAE Flare
Kv value
Cv value
Multi pack
[in.]
[m3/h]
[gal/min]
Code no.
Qty/ pack
BML 6
Flare ext. × ext.
1/4
0.3
0.35
009G0101
20
BML 10
3/8
0.84
0.98
009G0127
20
BML 12
1/2
1.5
1.75
009G0141
12
BML 15
5/8
2.2
2.57
009G0168
12
BML 18
3/4
2.9
3.38
009G0183
12
Shut-o diaphragm valve, Types BML and BMT
Table 9: Connection diagrams
Ordering
BML code numbers described in this data sheet are standard code numbers, i.e. made to stock.Besides code
numbers made to stock
BML is also made to order. Make to order options include:
• Mechanical connection type
• Mechanical connection size
Multipack contains several items, individually packed, so that customers can purchase 1 item and receive all relevant
documentation.
Industrial pack contains several items that are not individually packed. Industrial packs cannot be broken down, and
will only contain documentation on pack level, not on item level.
The list contains all certicates, declarations, and approvals for this product type. Individual code number may have
some or all of these approvals, and certain local approvals may not appear on the list.
Some approvals may change over time. You can check the most current status at danfoss.com or contact your local
Danfoss representative if you have any questions.
Table 19: Certicates, declarations, and approvals
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