Floating Ball Valve

Floating ball valve with simple structure, good sealing performance but the seat material is required to withstand the workload since the sealing pressure is bared by the seat ring.


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Key Specifications / Features

A floating ball valve is a ball valve with its ball floating (not fixed by a trunnion) inside the valve body, it drifts toward to the downstream side and tightly pushes against the seat under the medium pressure to ensure sealing reliability.

As one of the reliable ball valve manufacturers, Relia supplies the floating ball valve with simple structure, good sealing performance but the seat material is required to withstand the workload since the sealing pressure is bared by the seat ring.

The floating ball valve is suitable for medium and low pressure and usually has a small diameter.


  • Bi-directional Seal
  • Zero leakage, 100% pressure test before leave the factory
  • Split body, bolted body, side entry
  • Fire safe
  • Anti-static device
  • Locking device

Standard Specifications

Design and Manufacture API 6D/API 608/BS5351/ISO 17292
Wall Thickness API 6D
Face-to-Face Dimension API 6D
Flange End Dimension ANSI/ASME B16.5
Inspection & Testing API 6D/API 598
Fire Safe Design API 607/API 6FA
Material Nace MR 0175

Product Range

Type Floating Ball/Trunnion Mounted Ball
Body Material Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Duplex Steel
Seat Soft Seated: PTFE, RPTFE, Nylon, PEEK, PPL, Delrin, Devlon, PCTFE, PTFE Glass Filled, PTFE Carbon Filled
Metal Seated: Stellite, Tunsten Carbide, Chrome Carbide
Size Range 1/2”-6” (DN15-DN150)
Class Rating ANSI Class 150-1500
End Connection Flanged, Butt Welding
Operator Lever, Worm Gear, Electric, Penumatic


Typical Drawings

Cast Steel Floating Ball Valves

Material List

No. Part Name WCB/A105+ENP LCB/F316 A351 CF8M/F316
1 Nut ASTM A194 2H ASTM A194 2HM ASTM A194 8M
2 Bolt ASTM A193 B7 ASTM A193 B7M ASTM A193 B8M
3 Bonnet ASTM A216 WCB ASTM A352 LCB ASTM A351 CF8M
4 Gasket SS304+Graphite SS316+Graphite SS316+Graphite
6 Ball ASTM A105+ENP ASTM A182 F316 ASTM A182 F316
8 Spring SS 304 SS 316 SS 316
9 Stem A182 F6a A182 F316 A182 F316
10 Thrust Washer PTFE PTFE PTFE
11 Packing Graphite Graphite Graphite
12 Packing Gland ASTM A216 WCB ASTM A352 LCB ASTM A351 CF8M
13 Bolt ASTM A193 B7 ASTM A193 B7M ASTM A193 B8M
14 Nut ASTM A194 2H ASTM A194 2HM ASTM A194 8M
15 Hand Stop Carbon Steel Carbon Steel Carbon Steel
16 Lock Cast Iron Cast Iron Cast Iron
17 Lever Carbon Steel Carbon Steel Carbon Steel
18 Gasket Carbon Steel Carbon Steel Carbon Steel
19 Pin Carbon Steel Carbon Steel Stainless Steel

Forged Steel Floating Ball Valves

Materil List

No. Part Name A105/A105+ENP LF2/F316 F316/F316
1 Nut A194 2H A194 7M A194 8M
2 Bolt A193 B7 A320 L7M A193 B8M
3 Bonnet ASTM A105 ASTM A350 LF2 ASTM A182 F316
4 Gasket 304+Graphite 316+Graphite 316+Graphite
5 O-Ring Viton AED Viton AED Viton AED
6 O-Ring Viton AED Viton AED Viton AED
8 Ball A105+ENP A350 LF2+ENP A182 F316
9 Thrust Washer PTFE PTFE PTFE
10 Stem A182 F6a A182 F316 A182 F316
11 Axle Sleeve Stainless Steel Stainless Steel Stainless Steel
12 Stuffing Gland ASTM A105 ASTM A350 LF2 A182 F316
13 Packing Graphite Graphite Graphite
14 Stud A193 B7 A320 L7M A193 B8M
15 Lock Cast Iron Cast Iron Cast Iron
16 Packing Gland ASTM A105 ASTM A350 LF2 A182 F316
17 Hand Stop Carbon Steel Carbon Steel Carbon Steel
18 Snap Ring Carbon Steel Carbon Steel Carbon Steel
19 Stud A193 B7 A320 L7M A193 B8M
20 Handle Carbon Steel Carbon Steel Carbon Steel
21 Gasket SS304+Graphite SS316+Graphite SS316+Graphite
22 Stud Carbon Steel Carbon Steel Carbon Steel
23 Sud Carbon Steel Carbon Steel Carbon Steel
24 Lever Carbon Steel Carbon Steel Carbon Steel


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sales@reliavalve.com + 86-577-86373155