SCREW TYPE HEAVY DUTY – MQS-SGR

TECHNICAL DATA

SIZE

WORKING
PRESSURE
Dynamic

RATED FLOW
at 0.2 MPa of
pressure drop

OIL SPILLAGE
Connection /
Disconnection

MINIMUM BURST PRESSURE

CONNECTION /
DISCONNECTION
UNDER
PRESSURE

DN

inch

Dash

MPa

PSI

l/min

US
GPM

cc.

cubic
inch

Male

Female

M & F

MPa

PSI

MPa

PSI

MPa

PSI

10 3/8 6 35 5,075 26 6.9  1.5 0.092 150 21,750 160 23,200 180 26,100 Allowed
12 1/2 8 30 4,350 54 14.3 2.0 0.122 130 18,850 140 20,300 140 20,300 Allowed
19 3/4 12 30 4,350 107 28.3 5.0 0.305 130 17,750 130 18,850 140 20,300 Allowed
25 1 16 25 3,625 186 49.1 9.0 0.549 110 15,950 110 15,950 110 15,950 Allowed
38 1.1/2 24 30 4,350 492 130.0 25.0 1.526 130 18,850 125 18,125 130 18,850 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

• Screw-type couplings specially designed for heavy duty applications such as hammers, attachments, rock crushers, etc.
• Thanks to strengthened internal components this series is highly resistant against backflow, flow impulses and peaks, pressure impulses, vibration and hose bending
• Connection and disconnection is made by screwing the sleeve, also possible with rated pressure in the line
• Connection secured on the thread between the sleeve and the male coupling
• Shut-off by poppet valve
• Hexagonal profile of external sleeve for an easy connection and disconnection in high pressure conditions
• Interchangeable with MQS-SG series and similar products available on the market
• Up to size DN 20 ISO 14541 compliant

MATERIAL

Female and male coupling in high standard steel. Carbonitrided valve, springs in C98 steel, seals in NBR (other materials available on request) and back-up ring in PTFE

WORKING TEMPERATURE

-22ºF up to +230ºF (-30ºC up to +110ºC)
Specific seals available in case of higher temperatures

SAFETY FACTOR

4:1 for dynamic pressures

IMPULSE PRESSURES

200,000 cycles at 133% of the rated one (freq. 1Hz) disconnected; 500,000 connected

TEST SPECIFICATIONS

ISO 18869