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Worm Gear Operated Metal-Seated Floating Ball Valve | High-Pressure Ball Valve

Worm Gear Operated Metal-Seated Floating Ball Valve | High-Pressure Ball Valve
  • Nominal Diameter: DN15‑DN250 (1/2″‑10″)
  • Nominal Pressure: PN16‑PN250 (Class 150LB‑1500LB)
  • Operation: Handwheel, Gear Operator
  • Body Material: WCB, WC6, WC9, 304, 316L, Hastelloy C, Alloy 20, 2205, 2507, 904L, 310S, TA2, etc.
  • Seat Material: Metal‑to‑Metal Seal
  • Design & Manufacturing Standards: ANSI B16.34, GB/T 12237, DIN 3357, API 608, etc.
  • Flange Standards: ASME B16.5, JIS B2220, EN1092‑1, HG/T 20592, etc.
  • Operating Temperature: -40°C‑ 425°C
  • Applicable Media: Diesel oil, Natural gas, Nitrogen, Steam, Heat‑transfer oil, Hot oil, Hydrocarbons, Chemical raw materials, Organic solvents, etc.
For technical drawings and 3-D models, click on a part number.

Product details

Gear‑Operated Metal‑Seated Floating Ball Valve is a high‑performance ball valve featuring a floating‑ball structure, metal‑to‑metal seat and worm‑gear actuator. It is mainly applied in industrial pipeline systems with high temperature, high pressure, abrasion‑prone service and strict sealing‑reliability requirements.

With the floating‑ball design, the ball can shift towards the downstream side under medium pressure and press tightly against the downstream metal seat to achieve a reliable seal. The metal‑to‑metal sealing construction delivers excellent resistance to high‑temperature, wear and erosion.

Working Principle of Flanged Metal-Seated Floating Ball Valve
Opening Process: Operate the worm gear handwheel to drive the valve stem rotation via the worm gear transmission mechanism, and the stem drives the ball to rotate approximately 90°. The flow area gradually increases as the ball bore aligns with the pipeline axis. When the ball fully reaches the open position, the bore is completely connected with the pipeline, allowing the medium to pass through the valve smoothly.

Closing Process: Reverse the worm gear operation to rotate the ball to the closed position. Under the pressure of pipeline medium, the floating ball shifts toward the downstream side and compresses the metal valve seat, forming reliable sealing specific pressure between the ball and the seat to cut off the medium flow.

Product Specifications

Manual ball valves are widely used on piping systems for fast opening and closing, to cut off or connect fluid media stably. Accurate parameter confirmation including working temperature, medium, pressure and caliber is required before ordering for correct valve selection. Customized solutions on valve size, pressure rating, connection standard and body material are available to meet diverse non-standard working conditions.（Unit: mm）

Worm Gear Operated Metal-Seated Floating Ball Valve – 150LB-1500LB

DNNPSType/ClassPart NoL-RFL-RJDD1D2bfW1W2H1H2
15 0.5Q41H-150LBQ41H150XLX05108 119 89 60.5 35 11.5 1.6 140 85
20 0.75Q41H-150LBQ41H150XLX075117 130 98 70 43 11.5 1.6 140 90
25 1Q41H-150LBQ41H150XLX1127 140 108 79.5 51 11.5 1.6 150 99
32 1.25Q41H-150LBQ41H150XLX125140 153 117 89 64 13 1.6 180 105
40 1.5Q41H-150LBQ41H150XLX15165 178 127 98.5 73 14.5 1.6 200 126
50 2Q41H-150LBQ41H150XLX2178 191 152 120.5 92 16 1.6 250 140
65 2.5Q41H-150LBQ41H150XLX25190 203 178 139.5 105 17.5 1.6 300 165
80 3Q41H-150LBQ41H150XLX3203 216 190 152.5 127 19.5 1.6 350 178
100 4Q41H-150LBQ41H150XLX4229 242 229 190.5 157 24 1.6 500 305 230 380
125 5Q41H-150LBQ41H150XLX5356 369 254 216 186 24 1.6 800 305 280 405
150 6Q41H-150LBQ41H150XLX6394 407 279 241.5 216 25.5 1.6 800 305 310 460
200 8Q41H-150LBQ41H150XLX8457 470 343 298.5 270 29 1.6 1000 305 350 550
250 10Q41H-150LBQ41H150XLX10533 546 406 362 324 31 1.6 /400 /706
15 0.5Q41H-300LBQ41H300XLX05140 151 95 66.5 35 14.5 1.6 140 85
20 0.75Q41H-300LBQ41H300XLX075152 165 117 82.5 43 16 1.6 140 90
25 1Q41H-300LBQ41H300XLX1165 178 124 89 51 17.5 1.6 150 99
32 1.25Q41H-300LBQ41H300XLX125178 191 133 98.5 64 19.5 1.6 180 105
40 1.5Q41H-300LBQ41H300XLX15190 203 156 114.5 73 21 1.6 200 126
50 2Q41H-300LBQ41H300XLX2216 232 165 127 92 22.5 1.6 250 142
65 2.5Q41H-300LBQ41H300XLX25241 257 190 149 105 25.5 1.6 300 165
80 3Q41H-300LBQ41H300XLX3283 299 210 168.5 127 29 1.6 350 178 330
100 4Q41H-300LBQ41H300XLX4305 321 254 200 157 32 1.6 500 305 230 380
125 5Q41H-300LBQ41H300XLX5381 397 279 235 186 35 1.6 800 305 280 420
150 6Q41H-300LBQ41H300XLX6403 419 318 270 216 37 1.6 800 305 310 480
200 8Q41H-300LBQ41H300XLX8502 518 381 330 270 41.5 1.6 1000 305 350 560
15 0.5Q41H-600LBQ41H600XLX05165 164 95 66.5 35 14.5 6.4 140 79
20 0.75Q41H-600LBQ41H600XLX075190 190 118 82.5 43 16 6.4 140 83
25 1Q41H-600LBQ41H600XLX1216 216 124 89 51 17.5 6.4 200 114
32 1.25Q41H-600LBQ41H600XLX125229 229 133 98.5 64 21 6.4 200 120
40 1.5Q41H-600LBQ41H600XLX15241 241 156 114.5 73 22.5 6.4 250 125
50 2Q41H-600LBQ41H600XLX2292 295 165 127 92 25.5 6.4 300 156
65 2.5Q41H-600LBQ41H600XLX25330 333 190 149 105 29 6.4 350 172
80 3Q41H-600LBQ41H600XLX3356 359 210 168 127 32 6.4 500 305 220 370
100 4Q41H-600LBQ41H600XLX4432 435 273 216 157 38.5 6.4 650 305 250 400
15 0.5Q41H-900LBQ41H900XLX05216 216 121 82.5 35 22.5 6.4 150 98
20 0.75Q41H-900LBQ41H900XLX075229 229 130 88.9 43 25.5 6.4 150 105
25 1Q41H-900LBQ41H900XLX1254 254 149 101.6 51 29 6.4 200 110
32 1.25Q41H-900LBQ41H900XLX125279 279 159 111.1 64 29 6.4 250 120
40 1.5Q41H-900LBQ41H900XLX15305 305 178 123.8 73 32 6.4 250 125
50 2Q41H-900LBQ41H900XLX2368 371 216 165.1 92 38.5 6.4 350 160
15 0.5Q41H-1500LBQ41H1500XLX05216 216 121 82.5 35 22.5 6.4 182 98
20 0.75Q41H-1500LBQ41H1500XLX075229 229 130 88.9 43 25.5 6.4 200 105
25 1Q41H-1500LBQ41H1500XLX1254 254 149 101.6 51 29 6.4 250 110
32 1.25Q41H-1500LBQ41H1500XLX125279 279 159 111.1 64 29 6.4 300 120
40 1.5Q41H-1500LBQ41H1500XLX15305 305 178 123.8 73 32 6.4 350 130
50 2Q41H-1500LBQ41H1500XLX2368 371 216 165.1 92 38.5 6.4 500 160

The valve adopts a classic floating ball structure with a simple design, low failure rate and low maintenance cost. The metal-to-metal hard seal construction delivers outstanding resistance to high temperature, high pressure and erosion, making it suitable for severe high-temperature working conditions. Featuring medium pressure self-tightening sealing, its sealing performance improves continuously with rising pressure, ensuring excellent sealing stability.