QHH7N Mechanical seal
Features
1. For stepped shafts
2. Single seal
3. Balanced mechanical seal
4. Super-Sinus-spring driving and compensating functions
5. Independent rotation direction
6. a variety of mechanical seals about QHH7 type:
a, Integrated pumping device available (H7F, H75F)
b, seat cooling available (H75G115)
Advantages
1. Universal applications(normal mechanical seal)
2. Excellent compensation functioning equivalent, effective pressurization
3. interchangeable faces to keep it available easily
4. Extended selected materials
5. Flexibility in torque transmissions
6. Bilateral rotation: alternative rotation direction; easy install and uninstall
7. Clean assembly
8. Long product lifecycle
9. Installation faults were avoided, damage- free and cost-effective.
10. Straightforward and easier specification for pre-assembly unit
11. Time saving( reduced down-time)
12. Self cleaning effect
13. Short Installation length possible (G16)
14. Individual adaptation is subject to pump's design and style.
15. Customized products(OEMs) are available.
Recommended applications
1. Chemical industry
2. Special rotating equipment, mainly industrial process pumps
3. Pharmaceutical industry
4. Water treatment and sewage proposal
5. Refining technology
6. Power plant technology
7. Petrochemical industry
8. Pulp and paper industry
9. Oil and gas industry
10. Hot water applications
11. Light hydrocarbons medium
12. Boiler feed pumps
Materials:
Mteal parts: Stainless steel 316, 304, 2Cr13
Friction components: Silicon carbide, hard alloy, carbon graphite
Auxiliary seals: rubber(NBR, MVQ,FPM, FKM,EPM) or PTFE
Tech specifications:
1.1472Seal face
1.2485Drive collar
1.3474Thrust ring
1.4412.1O-Ring
1.5477Spring
1.6904Set screw
2475Seat (G9)
3412.2O-Ring
1) d1 > 100 mm: 2 mm X 30°
2) d1 > 100 mm: 30°
3) d1 > 100 mm: +0.1
4) d1 > 100 mm: H7
Conditions and Operating range
Shaft diameter: D1 = 14...100 mm (0.55"...3.94")
(Single spring: D1 = max. 100 mm (3.94"))
Pressure:
P1 = 80 bar (1, 160 PSI) for d1 = 14...100 mm,
P1 = 25 bar (363 PSI) for d1 = 100...200 mm,
P1 = 16 bar (232 PSI) for d1 > 200 mm
Temperature: T = -50 ° C-220 ° C (-58 ° F-428 ° F)
Sliding(linear) velocity: Vg = 25 m/s (80.5ft/s)
Axial movement:
D1 up to 22 mm: ± 1.0 mm
D1 24 up to 58 mm: ± 1.5 mm
D1 from 60 mm: ± 2.0 mm
Package: Poly bag, one carton to one set
URL: hzqhsy.en.made-in-china.com/ or www.qhseals.com