SCREW TYPE HEAVY DUTY – MQS-SH

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 70 10,150 10 2.6  0.4 0.024 290 42,050 350 50,750 300 43,500 Allowed up to 30 MPa
10 3/8 6 60 8,700 31 8.2 1.5 0.092 250 36,250 330 47,850 320 46,400 Allowed up to 30 MPa
12 1/2 8 50 7,250 51 13.5 2.0 0.122 200 29,000 260 37,700 310 44,950 Allowed up to 30 MPa
19 3/4 12 50 7,250 102 26.9 4.0 0.244 200 29,000 250 36,250 310 44,950 Allowed up to 30 MPa
25 1 16 50 7,250 170 44.9 7.5 0.458 200 29,000 230 33,350 270 39,150 Allowed up to 30 MPa
31 1.1/4 20 40 5,800 325 85.9 15.0 0.916 160 23,200 170 24,650 230 33,350 Allowed up to 15 MPa
38 1.1/2 24 32 4,640 494 130.5 23.0 1.404 130 18,850 140 20,300 150 21,750 Allowed up to 15 MPa
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-on connection/disconnection system
• Sleeve with hexagon area internal components reinforced, made in steel
• Hardened valve bodies
• Three-part poppet valve with a moulded shaped seal
• Mechanical backstop to prevent partial enclosures of valves due to peaks and reverse flow
• Interchangeable with other products and widely used on the market
• Accessories (plugs and caps) and spare part kits available
• Wide range of termination ends

MATERIAL

Couplings in steel with some stressed area hardened. Carbonitrided valve, springs in C98 steel, seals in NBR and backup ring in PTFE

WORKING TEMPERATURE

-22ºF up to +230ºF (-30ºC up to +110ºC)

SAFETY FACTOR

4:1 for dynamic pressures

IMPULSE PRESSURES

200,000 cycles (connected and disconnected conditions) at 120% of the rated one (freq. 1Hz)

TEST SPECIFICATIONS

ISO 18869

Find out more with our Q.Safe Catalogue