Danfoss BML, BMT Data sheet

Data Sheet

Shut-oﬀ diaphragm valve Type BML and BMT

With and without handwheel

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.

AI212386431516en-000901

Danfoss

9G8091

Refrigerants

R134a, R22/R407C, R290, R404A/R507, R407H, R449B, R450A, R513A, R515B, R516A, R600, R600a, R1234ze(E), R1234yf, R1270

Refrigerant oil

POE, PAG (PVE, PAO)

Technical data

Values

Max. working pressure

PS/MWP = 28 bar / 406 psig

Media Temperature range

-55 – 100 °C / -67 – 212 °F

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.

Product specication

Technical data

Table 2: Technical data

Technical data

Values

Working range

Δp = -1 – 21 bar / -14 – 304 psig

Serviceable

Yes

Flow direction

Single ow

Box label

Handwheel

Danfoss 9G8092

Position

Inscription

Explanation

Box label

Shut-o diaphragm valve

Product name

Box label

BML 6s

Product type

Box label

009G0202

Code number

Box label

Straightway

Direction

Box label

With Hand wheel

Hand wheel type

Box label

¼ in Extended ends, ODF

Connection size and type

Box label

PS 28 bar/MWP 406 psig

Max. working pressure in bar and psig

Box label; Handwheel

Additional information: Relevant approval authority logos

Box label

BE2720E

Code for production place and time (BE = Wuqing, week 27, year 2020, weekday E = Friday)

Box label; Handwheel

MADE IN CHINA

Manufacturing site acc. to EN standards

Box label

EAN code

Barcode for individual code no. identication according to EAN standard

Handwheel

OPEN

Open direction

Shut-o diaphragm valve, Types BML and BMT

Identication

Relevant product data is available on the product and box label. An example of a box label is shown, including an explanation of the content.

Table 3: Box label (example)

Table 4: Product and label text

Danfoss

9G45.18

.11

Position

Description

Material

Screw

Steel with plating Zn

Lock washer

Steel with plating Zn

Handwheel

Plastic4Driver

Al alloy

Spindle

Brass6Cover

Brass7Thrust pad

Stainless steel

Diaphragm with sealing ring

Stainless steel + nylon

Spring

Steel with plating Zn

Flare connection

Brass11Bracket

Steel with plating Zn

Screw

Steel with plating Zn

ODF solder with extended ends

Copper

ODF solder connection

Brass

Shut-o diaphragm valve, Types BML and BMT

Design and Materials

Figure 2: Design and Materials

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.

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