SCREW TYPE FOR HYDRAULIC CYLINDERS – BALL – MQS-SC

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

6 1/4 4 72 10,440 11 2.9  0.4 0.024 350 50,750 310 44,950 320 46,400 Allowed Max. 10 MPa*
10 3/8 6 72 10,440 26 7.0 0.6 0.037 290 42,050 300 43,500 290 42,050 Allowed Max. 10 MPa*
The rated flow represents the normal operating condition.The maximum recommended flow rate is equal to 1.5 times the rated flow
*In one part

PRODUCT DESCRIPTION

• Screw-type couplings specially designed for very high static pressure applications on cylinders and hydraulic rams
• Connection and disconnection is made by screwing the sleeve and can be made with residual pressure in the line
• Connection secured on the thread between the sleeve and the male coupling
• Shut-off by ball valve provides effective hydraulic sealing
• Interchangeable with other products and widely used in the USA and Europe
• ISO 14540 compliant

MATERIAL

Female and male coupling in 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

10,000 cycles at 100% of the rated one (freq. 1Hz)

TEST SPECIFICATIONS

ISO 18869

Find out more with our Q.Safe Catalogue