FLAT FACE – MQS-F

TECHNICAL DATA

SIZE

WORKING
PRESSURE
CONNECTED
Dynamic

WORKING
PRESSURE
DISCONNECTED
Dynamic

RATED FLOW
at 0.2 MPa of
pressure drop

CONNECTION
EFFORT

OIL SPILLAGE
Connection /
Disconnection

MINIMUM BURST PRESSURE

CONNECTION
WITH FEMALE
UNDER
PRESSURE
(Male at 0 MPa)

DN

inch

Dash

MPa

PSI

MPa

PSI

l/min

US
GPM

N

lb.

cc.

cubic
inch

Male

Female

M & F

MPa

PSI

MPa

PSI

MPa

PSI

6 1/4 4 35 5,075 32 4,640 16 4.2 120 27.0 0.005 0.0003 180 26,100 130 18,850 160 23,200 Allowed up to 6 MPa
10 3/8 6 35 5,075 25 3,625 54 14.3 130 29.2 0.007 0.0004 135 19,575 125 18,125 140 20,300 Allowed up to 6 MPa
12 1/2 8 35 5,075 25 3,625 86 22.7 150 33.7 0.008 0.0005 120 17,400 110 15,950 145 21,025 Allowed up to 4 MPa
16 5/8 10 35 5,075 25 3,625 101 26.7 160 36.0 0.008 0.0005 150 21,750 100 14,500 160 23,200 Allowed up to 3 MPa
19 3/4 12 35 5,075 25 3,625 172 45.4 210 47.2 0.009 0.0005 100 14,500 105 15,225 140 20,300 Allowed up to 2 MPa
25 1 16 35 5,075 21 3,045 204 53.9 210 47.2 0.020 0.0012 105 15,225 85 12,325 145 21,025 Allowed up to 2 MPa
Connection with Male under pressure not allowed; Disconnection under pressure not allowed
The rated flow represents the normal operating condition. The maximum recommended flow rate is equal to 1.5 times the rated flow

PRODUCT DESCRIPTION

• Flat mating surfaces easily wiped clean to prevent contamination and spillage during connection/disconnection
• Connection is made by pushing the male coupling and disconnection by pulling back the sleeve of the female
• Safety system on female part to prevent accidental disconnection
• Positive, quick connection of the male into the female by the latching ball system
• Shut-off by flat valve
• Interchangeability according to ISO 16028 and HTMA standards (only for ⅜”)
• 1,000,000 cycles at 120% of rated (freq. 1Hz – connected conditions)

MATERIAL

Female and male coupling in steel, with some stressed tempered or carbonitrided areas. Springs in AISI and C98 steel, seals in polyurethane and NBR. Other materials (VITON, EPDM or any others) on request

WORKING TEMPERATURE

-22ºF up to +230ºF (-30ºC up to +110ºC)
For other temperatures the coupling is assembled with the specified seals

SAFETY FACTOR

4:1 for dynamic pressures

IMPULSE PRESSURES

100,000 cycles at 133% of the rated one (freq. 1Hz) in disconnected conditions. 1,000,000 cycles at 120% of rated one (freq. 1Hz) in connected conditions.

TEST SPECIFICATIONS

ISO 18869

Find out more with our Q.Safe Catalogue