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PTFE Soft Seated Ball Valve Floating Ball Valve 150LB Worm Gear Q41F Full Bore

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PTFE Soft Seated Ball Valve Floating Ball Valve 150LB Worm Gear Q41F Full Bore

PTFE Soft Seated Ball Valve Floating Ball Valve 150LB Worm Gear Q41F Full Bore
PTFE Soft Seated Ball Valve Floating Ball Valve 150LB Worm Gear Q41F Full Bore PTFE Soft Seated Ball Valve Floating Ball Valve 150LB Worm Gear Q41F Full Bore

Large Image :  PTFE Soft Seated Ball Valve Floating Ball Valve 150LB Worm Gear Q41F Full Bore Get Best Price

Product Details:

Place of Origin: China
Brand Name: Tengs Valve
Certification: ISO, CE, API
Model Number: Q41F

Payment & Shipping Terms:

Minimum Order Quantity: 1 Pc
Price: Negotiable
Packaging Details: Seaworthy Plywoods
Delivery Time: 30 Days
Supply Ability: 400 Pcs
Detailed Product Description
Body Material: Carbon Steel A216 WCB Ball: SS304, SS316, F51, F53 Etc.
Size: 8inch, Dn200 Pressure Rating: Class 150LB / 150#
Actuating Device: Worm Gear Operated Connection Ends: Flanged RF
Seat: Soft Seated, PTFE Bore / Port: Full Bore / Full Port
High Light:

fire safe ball valve


lockable ball valve

8in PTFE Seated Floating Ball Valve Full Port A216 WCB Flange 150LB Worm Gear Q41F


Quick Details

1. Product: 8inch 150LB PTFE Seated Floating Ball Valve

2. Model: Q41F

3. Design: API 6D, ANSI B16.34

4. Face to face: API6D, B16.10

5. Flange End: ANSI, B16.5

6. Size Range: 8INCH, DN200

7. Pressure Ratings: ANSI CL150LB / 150#

8. Body materials: Cast Steel A216 WCB

9. Trim: 304SS, 316SS

10. Bore Type: Full Bore / FB

11. Actuator: Manual / Worm gear


1. Switch Indication of Hand Operated Floating Ball Valve
As the moving parts of valve body, ball, stem and handle are an assembly unit. The head of valve stem is shaped a diploid, thus to easily distinguish whether valve is in the 'ON' position or 'OFF' position from handle position. When handle or stem diploid is in parallel with the pipe axis, valve is in 'ON' position; when handle
or stem diploid is vertical to the pipe axis, valve is in 'OFF position.
2. Valve Locking Device
To prevent mis-operation, the fully opened or closed position of valve can be locked up, especially when valves are mounted outdoors or when valves are not allowed to be opened or closed by technical process. To prevent misoperation by other persons, it seems very important to have valve position locked up. Thereby, lockhole locating tab is designed if requested by users to meet the technological requirements of users.
3. Anti-Blowout Structure of Valve Stem
When medium passes through the valve, the pressure in valve body may possibly push the stem out, or when the valve is in repair, if there is pressure in the middle cavity, the stem or medium seems to easily blow out upon disassembling the valve, which can cause injuries to person. To prevent these possibilities, a dummy club is placed at the lower part of the stem. In this way, even if there is fire, packing and thrust bearing are burnt or packing is damaged due to other causes, the pressure of medium in valve body will make the dummy club of valve stem in close contact with the upper seal face of valve body, thus to prevent medium leaking out from the damaged packing position.
4. Antistatic Device
When operating the valve, the friction between the ball and the nonmetal seat, like PTFE will produce electrostatic charge that can be accumulated on the ball. To prevent static spark, an antistatic device is placed on the valve to derive the electric charge accumulated on the ball from the static channel between the ball and the stem, or between the stem and valve body.
5. Fire Safe Structure
In case of fire, the nonmetal packing or seat (non-fireproof material) will be burnt, the considerable medium leakage may possibly cause fire spread. Here, the fire safe structure functions to prevent medium from mass leakage. As shown in the figure, once the seat is burnt, the ball will directly contact the metal face on valve body, thus to prevent medium leaking out from the burnt seat. The design of
fire protection and antistatic structure shall conform to the requirements of API607, JB/T6899 and the second part of BS6755.
6. Middle Flange Leak-tight Structure
The connection between valve body and the left body is sealed by gasket. To prevent seal leakage resulted from fire, high temperature or vibration etc., the valve body and the left body is designed metal-to-metal contacted, thus to form up a seal flange to ensure leak-tightness.
7. Self-Relieving Structure
In case of abnormal rise of pressure in the middle cavity of valve resulted from the medium left there suffered from changes of pipeline pressure or medium temperature, automatic pressure relief of valve seat can be effected under the pressure of the medium itself, thus to guarantee the safety of valve.



1. Soft Seated Ball Valve Standards:

A. Design and manufacture: API6D

B. Inspection and Test: API 598,API 6D

C. End flange dimension: ASME B16.5

D. BW ends dimension: ASME B16.25

E. Face to face or End to ends: ASME B16.10

F. Pressure-temperature rating: ASME B16.34


2. Main Parts and Materials for the Floating Soft Seated Ball Valve
Floating Ball Valve Drawing

NO. Parts Name Carbon Steel Series
1 Body A216 WCB
3 Ball SS304 / SS316
4 Spring INCONEL 750
5 Stud A193 B7
6 Gasket Soft Graphite+SS
7 Eyebolt Nut A194 2H
8 Bonnet A216 WCB
9 Stem A182 F6a / F304 / F316
10 Bush Bearing Metal+PTFE, Braided Graphite Fibre
11 Packing Seat A182 F6a
12 Packing Soft Graphite / PTFE
13 Nipple A216 WCB
14 Gland Packing A193 B7
15 Locating Plate ASTM A570+Zn{Cr)
16 Circlip AISI 1066
17 Hand Lever / Worm Gear Assemble


3. Main Connection Dimensions

PTFE Soft Seated Ball Valve Floating Ball Valve 150LB Worm Gear Q41F Full Bore 1

Class Size L B D G f K z-Od C RTJ
In mm RF RTJ Y P E F
150Lb 1 25 127   25 108 50.8 1.6 79.3 4-15.9 11.2        
11/4 32 140   32 117 63.5 1.6 88.9 4-15.9 12.7        
11/2 40 165   38 127 73.2 1.6 98.6 4-15.9 14.2        
2 50 178   49 152 91.9 1.6 120.7 4-19.1 15.8        
21/2 65 191   62 178 104.6 1.6 139.7 4-19.1 17.5        
3 80 203   74 191 127 1.6 152.4 4-19.1 19.1        
4 100 229   100 229 157.2 1.6 190.5 8-19.1 23.9        
6 150 394   150 279 215.9 1.6 241.3 8-22.2 25.4        
8 200 457   201 343 269.7 1.6 298.5 8-22.2 28.4        
10 250 533   252 406 323.9 1.6 362 12-25.4 30.2        

Contact Details
Tengs Valve International Limited

Contact Person: Mr. Biff Teng

Tel: 86-18066318081

Send your inquiry directly to us