Gear Operated Ball Valves

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Gear Operated Ball Valves

A gear operated ball valve combines a quarter-turn ball valve with a gearbox actuator that multiplies the operator’s input torque, making it practical to open and close large-bore or high-pressure lines by hand where a plain lever would be too stiff to turn. The gearbox carries a clear open/closed position indicator and can be padlocked in either state for safety and tamper resistance. SEDELON gear operated ball valves are built to API 6D with forged bodies (A105 / F304 / F316 / F11 / F22 / duplex F51-F53), fire-safe and anti-static construction, for oil & gas, petrochemical, power and pipeline service.

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product feature

Gearbox actuator – multiplies hand torque so large-bore and high-pressure valves can be operated manually without excessive effort.
Position indicator & padlockable – the handwheel shows open/closed at a glance and can be locked in position.
Floating or trunnion ball – ball type selected to match bore and pressure (larger sizes use a trunnion-mounted ball).
Blow-out proof stem – stem is retained from inside the body and cannot be ejected under line pressure.
Fire-safe & anti-static – graphite seat rings plus metal-to-metal backup seal (API 607) and an anti-static path through stem/ball/body.
Low operating torque – gear reduction gives smooth, low-effort operation even on big valves.
Zero-leakage sealing – soft seats tested to API 598 for bubble-tight shutoff.
Multi-end connection – flanged ends to ANSI B16.5 and butt-weld ends to ANSI B16.25 are offered as standard.

Flange end Dimension :ANSI B16.5

Butt Welded Dimensions：ANSI B16.25

Design and Manufacture：API 6D

Pressure Test：API598

Materials：A105、 F304 、F304L 、F316 、F316L、LF1 、LF2、LF3、LF9、 F51、F53、F11、F22, ect.

How a Gear Operated Ball Valve Works

The valve body is a standard quarter-turn ball valve; the difference is the actuator. A gearbox (worm-gear or bevel-gear reduction) sits between the handwheel and the stem, so several turns of the handwheel produce one 90° rotation of the ball. This reduction multiplies the operator’s torque, letting a single person open or close a large-bore or high-pressure valve that a direct lever could not move. The handwheel position always shows whether the ball bore is aligned with the pipeline (open) or at 90° (closed).

Material & Service Selection

Service / Media	Body	Ball	Stem	Seat
General water / air / oil	A105 (forged)	A105 / F304	A182 F6a	PTFE / RPTFE
Corrosive / chemical	F316 (CF8M)	F316	F316	RPTFE / PEEK
Cryogenic LNG	LF2 / LF3	F304	F304	PCTFE / PEEK
High-temp steam / oil	F11 / F22	F11	F11	Grafoil / metal
Offshore / seawater	F51 / F53 (duplex)	F51	F51	RPTFE
Sour service (H2S)	A105 (NACE)	F304	F6a (NACE)	PEEK

Application

Gear operated ball valves are used where lever torque is insufficient — large-bore lines, high-pressure systems, buried or hard-to-reach valves, and stations that need a lockable open/closed state. Typical service includes oil & gas pipelines, refineries, petrochemical plants, power stations, tank farms and general industrial utilities.

FAQ

Q: What is a gear operated ball valve?
A: A quarter-turn ball valve fitted with a gearbox actuator that multiplies hand torque, so large or high-pressure valves can still be operated manually.

Q: When do I need a gear operator instead of a lever?
A: Choose a gear operator when the line is large-bore (roughly NPS 10″ and above), high-pressure, buried/hard to reach, or requires a lockable position. For smaller, easily reached lines a lever operated ball valve is enough.

Q: Can the gear operator be locked or later automated?
A: Yes — the handwheel can be padlocked open or closed, and the gearbox can later be adapted to a pneumatic or electric actuator if automation is required.

Q: Floating vs trunnion ball for gear operated valves?
A: Smaller gear operated valves use a floating ball; larger bore / higher-pressure units use a trunnion mounted ball valve with a supported ball.

Q: What standards and end connections apply?
A: Design and manufacture to API 6D, face-to-face to ANSI B16.10, flanged ends to ANSI B16.5, butt-weld ends to ANSI B16.25, pressure-tested to API 598.

Q: Are you a manufacturer, and can you supply samples?
A: SEDELON is a ball valve manufacturer. We provide drawings, material certificates (EN 10204 3.1) and a fast sample quote — contact us for a 3-day sample quotation.

Class150
Gear open ball valves

NPS	in	2	2 1/2	3	4	6	8	10	12	14	16	18	20	24
d	mm	51	64	76	102	152	203	254	305	337	387	438	489	591
L(RF)	mm	178	190	203	229	394	457	533	610	686	762	864	914	1016
d1	mm	92	105	127	157	216	270	324	381	413	470	533	584	692
d2	mm	120.5	139.5	152.5	190.5	241.5	298.5	362	432	476	540	578	635	749.5
D	mm	152	178	190	229	279	343	406	483	533	597	635	699	813
b	mm	16	18	19	24	26	29	31	32	35	37	40	43	48
n-Фd	mm	4-19	4-19	4-19	8-19	8-22	8-22	12-25	12-25	12-29	16-29	16-32	20-32	20-35
H	mm	176	200	215	252	330	448	505	556	620	700	750	805	1110
W	mm	350	400	400	500	1000	300	350	400	500	500	500	500	500

Class300
Gear open ball valves

NPS	in	2	2 1/2	3	4	6	8	10	12	14	16	18	20	24
d	mm	51	64	76	102	152	203	254	305	337	387	432	483	584
L(RF)	mm	216	241	283	305	403	502	568	648	762	838	914	991	1143
d1	mm	92	105	127	157	216	270	324	381	413	470	533	584	692
d2	mm	127	149	168.5	200	270	330	387.5	451	514.5	571.5	628.5	686	813
D	mm	165	190	210	254	318	381	445	521	584	648	711	775	914
b	mm	23	26	29	32	37	42	48	51	54	58	61	64	70
n-Фd	mm	8-19	8-22	8-22	8-22	12-22	12-25	16-29	16-32	20-32	20-35	24-35	24-35	24-41
H	mm	176	200	215	252	330	448	505	556	620	700	750	805	1110
W	mm	350	400	400	500	1000	300	350	400	500	500	500	500	500

Class600
Gear open ball valves

NPS	in	2	3	4	5	6	8	10	12	14	16	18	20	24
d	mm	51	76	102	127	152	200	248	298	327	375	419	464	559
L(RF)	mm	292	356	432	508	559	660	787	838	889	991	1092	1194	1397
d1	mm	92	127	157	186	216	270	324	381	413	470	533	584	692
d2	mm	127	168.5	216	267	292	349	432	489	527	603	654	724	838
D	mm	165	210	273	330	356	419	508	559	603	686	743	813	940
b	mm	26	32	38	45	48	56	64	67	70	77	83	89	102
n-Фd	mm	8-19	8-22	8-25	8-29	12-29	12-32	16-35	20-35	20-38	20-41	20-44	24-44	24-52
H	mm	192	279	315	320	323	381	518	568	665	730	795	825	973
W	mm	600	1000	1500	1500	1500	500	500	500	500	500	500	500	500

Class900
Gear open ball valves

NPS	in	2	3	4	5	6	8	10	12	14	16	18	20	24
d	mm	47	73	98	121	146	190	234	282	311	354	400	444	533
L(RF)	mm	368	381	457	559	610	737	838	965	1029	1130	1219	1321	1549
L(RTJ)	mm	371	384	460	562	613	740	841	968	1039	1140	1232	1334	1568
d1	mm	92	127	157	186	216	270	324	381	413	470	533	584	692
d2	mm	165	190.5	235	279.4	317.5	393.7	469.9	533.4	558.8	615.9	685.8	749.3	901.7
D	mm	216	241	292	349	381	470	545	610	640	705	785	855	1040
b	mm	38.5	38.5	44.5	51	56	64	70	79.5	86	89	102	108	140
n-Фd	mm	8-26	8-26	8-32	8-35	12-32	12-39	16-39	20-39	20-42	20-45	20-51	20-54	20-67
H	mm	192	279	315	320	323	381	518	568	665	730	795	825	973
W	mm	600	1000	1500	1500	500	500	500	500	500	500	500	500	500

API Trim NO.
Table

No of internal parts	Seat ring or body	Gate、disc 、ball or body	Stem	No of internal parts	Seat ring or body	Gate、disc 、ball or body	Stem
01	13Cr	13Cr	13Cr	31	STELLITE	321SS	321SS
02	304SS	304SS	304SS	32	STELLITE	STELLITE	321SS
03	310SS	310SS	310SS	33	347SS	347SS	347SS
04	HARD 13Cr	HARD 13Cr	13Cr	34	STELLITE	347SS	347SS
05	STELLITE	STELLITE	13Cr	35	NICKEL ALLOY	13Cr	13Cr
06	Cu-Ni	13Cr	13Cr	36	A105/PTFE	A105+ENP	A105+ENP
07	13Cr	HARD 13Cr	13Cr	37	A105/PTFE	WCB+ENP	A105+ENP
08	STELLITE	13Cr	13Cr	38	13Cr/PTFE	13Cr	13Cr
09	Cu-Ni	Cu-Ni	Cu-Ni	39	304SS/PTFE	304SS	304SS
10	316SS	316SS	316SS	40	316SS/PTFE	316SS	316SS
11	Cu-Ni	STELLITE	Cu-Ni	41	A105/RPTFE	A105+ENP	A105+ENP
12	STELLITE	316SS	316SS	42	A105/RPTFE	WCB+ENP	A105+ENP
13	ALLOY 20	ALLOY 20	ALLOY 20	43	13Cr/RPTFE	13Cr	13Cr
14	STELLITE	ALLOY 20	ALLOY 20	44	304SS/RPTFE	304SS	304SS
15	STELLITE	STELLITE	304SS	45	316SS/RPTFE	316SS	316SS
16	STELLITE	STELLITE	316SS	46	A105/NYLON	A105+ENP	A105+ENP
17	STELLITE	STELLITE	347SS	47	A105/NYLON	WCB+ENP	A105+ENP
18	STELLITE	STELLITE	ALLOY 20	48	A105/NYLON	304SS	304SS
19	MONEL	MONEL	MONEL	49	A105/NYLON	316SS	316SS
20	BRONZE	BRONZE	13Cr	50	13Cr/NYLON	13Cr	13Cr
21	HASTELLOY B	HASTELLOY B	HASTELLOY B	51	304SS/NYLON	304SS	304SS
22		HASTELLOY C	HASTELLOY C	52	316SS/NYLON	316SS	316SS
23	STELLITE	304SS	304SS	53	A105/PEEK	A105+ENP	A105+ENP
24	304LSS	304LSS	304LSS	54	A105/PEEK	WCB+ENP	A105+ENP
25	STELLITE	304LSS	304LSS	55	13Cr/PEEK	13Cr	13Cr
26	STELLITE	STELLITE	304LSS	56	304SS/PEEK	304SS	304SS
27	316LSS	316LSS	316LSS	57	316SS/PEEK	316SS	316SS
28	STELLITE	316LSS	316LSS
29	STELLITE	STELLITE	316LSS
30	321SS	321SS	321SS

Note:please indicate it directly in the
order for the internal part’smaterial uncovered in the table

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