API Floating Ball Valve

Model schedule illustration

 

 

●Series code:The series code of our company is FY

●Special requirement code: K-Antisulphur type    D-Low temperature type    EX-Pole extending type    M-Ground burying type

●Valve type code: Q-Ball valve

●Driving manner code: 3-Worm wheel and screw trensmission    6-Air driving    7-Hydrodynamic driving

                                           8-Air-hydro operated    9-Electric driving    9e-Explosion electric driving

●Connecting type code: 1-The interior whorl joining    2-The other whorl joining    4-The flange joining

                                             6-To welding joining     7-To inserting joining      8-The caliper joining

●Design feature code:1-Direct floating type 4—Floating type three direct links of Model L 5—Floating type three direct links of Model T

                                        7-Direct regular type 8-Regular type Model T three direct links 9-Regular type Model L three direct links

●Sealing formation code: Y-Hard alloy      F-Strengthen the polytetrafluoroethylene (PTFE)      N-Nylon PPL-Counterpoint polyphenyl

●Pressure grade code: The 10 times of the nominal pressure MPa, pound grade io practical number

●Body material code: C-WCB     I-WC6、ZG1Cr5Mo     V-WC9、ZG20CrMoV     P-CF8、ZG1Cr18Ni9Ti

                                          R-CF8M、ZG1Cr18Ni12Mo2Ti      S-CF3      L-CF3M      F-LCB      N-LC3

 

 

 

Standards

 

API Floating Ball Valve

Design and Manufacture: API 6D、ASME B16.34(BS5351)、API608、MSS-SP-72

Face to Face Dimension: ASME B16.10、API 6D

Flange Connection Dimension: ASME B16.5

BW Connection Dimension: ASME B16.25

Test and Inspection: API 598、API 6D

Fire-safe Design: API 607

 

GB Floating Ball Valve

Design and Manufacture: GB/T19672、GB/T12237

Face to Face Dimension: GB/T12221、GB/T19672

Flange Connection Dimension: JB/T79、GB/T9113、HG20592

Test and Inspection: JB/T9092

Fire-safe Design: JB/T6899

 

 

Costruction and Features of Floating Ball Valve

 

Application

 

Floating ball valves are suitable for use on various kinds of pipelines of Class 150 to Class 1500, PN16 to PN100 to turn on or off the pipeline medium, of which the operation types include manual, worm gear and pneumatic or electric actuators.

 

 

 

Reliable Seat Seal

 

The structure design of elastic sealing ring has been adopted for floating ball valves. This seat design features a bigger sealing pressure ratio between the ring surface and the ball when medium pressure gets lower, where the contacting area is smaller. Thus, the reliable seal is ensured. When the medium pressure gets higher, the contacting area between seat ring and ball becomes bigger as the sealing ring transforms elastically to undertake the bigger force pushed by the medium without any damage.

 

 

 

 

Fire Safe Design

With the valve heated in a fire application the non-metal material parts such as seat sealing ring of PTFE, stem back seat gasket, gland packing, and the sealing gasket between body and bonnet might disintegrate or be damaged due to high temperature. specially designed structure of auxiliary metal to metal seal is provided to effectively prevent both internal and external leakage of the valve. As required by customers, floating ball valves with fire safe design can meet the requirement of API 607, API 6FA, BS6755 and JB/T 6899.

 

 

 

 

Reliable Stem Seal

 

The blow-out proof design has been adopted for the stem to ensure that even if the pressure in the body cavity is risen acc-idently and the packing flange becomes invalid, the stem may not be blown out by medium. The stem features the design with a backseat, being assembled from underneath. The sealing force against the backseat gets higher as the medium pressure becomes higher. So the reliable seal of the stem can be assured under variable medium pressure.

 

 

V type packing structure has been employed to effectively trans form the pushing force of the gland flange and the medium pressure into the sealing force against the stem.

 

 

The traditional packing flange design has been improved to be of two piece structure i.e., being as a gland flange and gland, the latter contacts the gland flange with spherical surface. Thus, the gland remains vertical always, and is lined internally with a PTFE bush to prevent the galling against and friction between thestem, which can also reduce the operation torque of the valve.

 

Based on customers' requirement, a packing tightening design may be employed to obtain more reliable stem packing seal, which is loaded by beve-lling spring

 

 

 

 

Anti-static Feature

 

The traditional packing flange design has been improved to be of two piece structure, i.e., being as a packing flange plate and a follower, the latter contacts the flange plate with spherical surface. Thus, the follower remains vertical always, and is lined internally with a PTFE bush to prevent the galling against and friction between the stem, which can also reduce the operation torque of the valve.

 

 

 

Wrong Operation Prevention

 

To prevent the ball valve from wrong operation the key lock with 90° of open and close positioning pad has been provided, which can be lockable as required. At the stem head, where the lever fixes, a flat is so designed that the valve opens with the lever in parallel to piping, and with the lever right-angled to the piping, the valve is closed. So it is ensured that the valve indicator of open and close can never make mistake.

 

 

 

 

Mounting Pad Provided

 

Our company has provided for floating ball valve with a mounting pad, through which it is easy to fix the actuators, such as worm gear, pneumatic and electric actuators.

 

 

 

 

Operation Torque of Floating Ball Valve

 

The operation torque data of soft sealed floating ball valve in the following table are calculated based on normal temperature and clean medium. As selecting actuator,it is suggested that drive torque of actuator be more than 1.3 times the operation torque of ball valve at least. In case of high temperature and low temperature working conditions or unclean medium, it is possible that valve operation torque gets increased, which should be taken into full consideration as selecting actuators. Operation torque for metal to metal sealed trunnion ball valve is about 4 times that of soft sealed floating ball valve.

 

NPS	DN	Operation torque of soft sealed floating ball valve N.m
		Class150 PN20	Class300 PN50	Class600 PN110	Class900 PN150	Class1500 PN260	PN16	PN25	PN40	PN63	PN100
¹/₂	15	7	10	17	25	35	6	8	10	15	17
³/₄	20	10	16	24	35	50	9	12	15	20	24
1	25	16	25	40	65	100	14	18	23	35	40
1 ¹/₄	32	24	35	60	100	150	22	28	32	50	60
1 ¹/₂	40	35	50	90	20	180	32	40	45	70	90
2	50	50	70	110	180	270	40	55	65	85	110
2 ¹/₂	65	80	100	165	-	-	60	85	95	130	165
3	80	120	160	300	-	-	90	130	150	200	300
4	100	180	280	600	-	-	130	190	260	340	600
5	125	280	600	-	-	-	250	320	550	-	-
6	150	540	1000	-	-	-	490	620	900	-	-
8	200	960	2100	-	-	-	860	1100	1800	-	-
10	250	1800	-	-	-	-	-	-	-	-	-

 

 

Typical Drawing of Floating Ball Valve and Parts Composition

 

 

Parts No.	Parts name	Materials
		WCB/A105+HCr(ENP)	WCB/304	WCB/316	CF8	CF8M
1	Body	ASTM A216 WCB	ASTM A216 WCB	ASTM A216 WCB	ASTM A351 CF8	ASTMA351 CF8M
2	Packing	PTFE	PTFE	PTFE	PTFE	PTFE
3	Stem bearing	PTFE	PTFE	PTFE	PTFE	PTFE
4	Gland	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316	ASTM A182 F304	ASTMA182 F304
5	Gland flange	ASTM A216 WCB	ASTM A216 WCB	ASTM A216 WCB	ASTM A351 CF8	ASTM A351 CF8M
6	Gland bolt	ASTMA193 B7	ASTM A193 B7	ASTMA193 B7	ASTM A193 B8	ASTM A193 B8M
7	Stop collar	Carbon steel	Carbon steel	Carbon steel	Stainless steel	Stainless steel
8	Circlip	Carbon steel	Carbon steel	Carbon steel	Stainless steel	Stainless steel
9	Lever	Carbon steel	Carbon steel	Carbon steel	Carbon steel	Carbon steel
10	Nut or wrench head	Carbon steel	Carbon steel	Carbon steel	Carbon steel	Carbon steel
11	Thrust washer	PTFE	PTFE	PTFE	PTFE	PTFE
12	Stem	ASTM A182 F6a	ASTM A182 F304	ASTM A182 F316	ASTM A182 F304	ASTM A182 F316
13	Ball	A105+HCr(ENP)	ASTM A182 F304	ASTM A182 F316	ASTM A182 F304	ASTM A182 F316
14	Seat	Reinforced PTFE	Reinforced PTFE	Reinforced PTFE	Reinforced PTFE	Reinforced PTFE
15	Gasket	PTFE	PTFE	PTFE	PTFE	PTFE
16	Body nut	ASTMA1942H	ASTMA1942H	ASTM A1942H	ASTM A1948	ASTM A1948M
17	Body bolting	ASTM A193 B7	ASTM A193 B7	ASTM A193 B7	ASTM A193 B8	ASTM A193 B8M
18	Closure	ASTM A216WCB	ASTM A216WCB	ASTM A216 WCB	ASTM A351 CF8	ASTM A351 CF8M

 

Note: The chart above only lists out some common composition of steel ball valve parts. We may provide other different parts material composition according to the customer's request or the actual valve working condition.

 

 

 

 

Main size of outside & weight

 

Pressure stage	Size		Dimensions (mm)													Weight (kg)
	DN	NPS	L		d	D	D₁	D₂	b	f	Z-do	W		H
			RF	BW								Hand wheel	Gear bos	Hand wheel	Gear bos	Hand wheel	Gear bos
Class150 PN20	15	1/2	108	119	13	89	60.5	35	11.5	1.6	4-15	140	-	85	-	3	-
	20	3/4	117	130	19	98	70	43	11.5	1.6	4-15	140	-	90	-	4	-
	25	1	127	140	25	108	79.5	51	11.5	1.6	4-15	150	-	99	-	5	-
	32	1 ¹/₄	140	153	32	117	89	64	13	1.6	4-15	180	-	105	-	7	-
	40	1 ¹/₂	165	178	38	127	98.5	73	14.5	1.6	4-15	200	-	126	-	8	-
	50	2	178	191	51	152	120.5	92	16	1.6	4-19	250	-	140	-	12	-
	65	2 ₁/₂	190	203	64	178	139.5	105	17.5	1.6	4-19	300	-	165	-	18	-
	80	3	203	216	76	190	152.5	127	19.5	1.6	4-19	350	-	178	-	24	-
	100	4	229	242	102	229	190.5	157	24	1.6	8-19	500	305	230	380	38	53
	125	5	356	369	127	254	216	186	24	1.6	8-22	800	305	280	405	60	79
	150	6	394	407	152	279	241.5	216	25.5	1.6	8-22	800	305	310	460	82	102
	200	8	457	470	203	343	2985	270	29	1.6	8-22	1000	305	350	550	145	185
	250	10	533	546	254	406	362	324	31	1.6	12-25	-	400	-	706	-	280

 

Pressure stage	Size		Dimensions (mm)													Weight (kg)
	DN	NPS	L		d	D	D₁	D₂	b	f	Z-do	W		H
			RF	RTJ								Hand wheel	Gear bos	Hand wheel	Gear bos	Hand wheel	Gear bos
Class300 PN50	15	1/2	140	151	13	95	66.5	35	14.5	1.6	4-15	140	140	85	85	3	-
	20	3/4	152	165	19	117	82.5	43	16	1.6	4-19	140	140	90	90	5	-
	25	1	165	178	25	124	89	51	17.5	1.6	4-19	150	150	99	99	6	-
	32	1 ₁/₄	178	191	32	133	98.5	64	19.5	1.6	4-19	180	180	105	105	8	-
	40	1 ₁/₂	190	203	38	156	114.5	73	21	1.6	4-22	200	200	126	126	11	-
	50	2	216	232	51	165	127	92	22.5	1.6	8-19	250	250	142	142	16	-
	65	2 ₁/₂	241	257	64	190	149	105	25.5	1.6	8-22	300	300	165	165	24	-
	80	3	283	299	76	210	168.5	127	29	1.6	8-22	350	350	178	178	34	52
	100	4	305	321	102	254	200	157	32	1.6	8-22	500	500	230	230	56	76
	125	5	381	397	127	279	235	186	35	1.6	8-22	800	800	280	280	86	124
	150	6	403	419	152	318	270	216	37	1.6	12-22	800	800	310	310	125	163
	200	8	502	518	203	381	330	270	41.5	1.6	12-25	1000	1000	350	350	222	267
Class600 PN110	15	1/2	165	164	13	95	66.5	35	14.5	6.4	4-15	140	-	79	-	5	-
	20	3/4	190	190	19	118	82.5	43	16	6.4	4-19	140	-	83	-	7	-
	25	1	216	216	25	124	89	51	17.5	6.4	4-19	200	-	114	-	9	-
	32	1 ₁/₄	229	229	32	133	98.5	64	21	6.4	4-19	200	-	120	-	13	-
	40	1 ₁/₂	241	241	38	156	114.5	73	22.5	6.4	4-22	250	-	125	-	17	-
	50	2	292	295	51	165	127	92	25.5	6.4	8-19	300	-	156	-	25	-
	65	2 ₁/₂	330	333	64	190	149	105	29	6.4	8-22	350	-	172	-	42	-
	80	3	356	359	76	210	168	127	32	6.4	8-22	500	305	220	370	56	76
	100	4	432	435	102	273	216	157	38.5	6.4	8-25	650	305	250	400	85	123
Class900 PN150	15	1/2	216	216	13	121	82.5	35	22.5	6.4	4-23	150	-	98	-	9	-
	20	3/4	229	229	19	130	88.9	43	25.5	6.4	4-23	150	-	105	-	13	-
	25	1	254	254	25	149	101.6	51	29	6.4	4-26	200	-	110	-	16	-
	32	1 ₁/₄	279	279	32	159	111.1	64	29	6.4	4-26	250	-	120	-	24	-
	40	1 ₁/₂	305	305	38	178	123.8	73	32	6.4	4-29	250	-	125	-	31	-
	50	2	368	371	49	216	165.1	92	38.5	6.4	8-26	350	-	160	-	45	-
Class1500 PN260	15	1/2	216	216	13	121	82.5	35	22.5	6.4	4-23	182	-	98	-	10	-
	20	3/4	229	229	19	130	88.9	43	25.5	6.4	4-23	200	-	105	-	14	-
	25	1	254	254	25	149	101.6	51	29	6.4	4-26	250	-	110	-	17	-
	32	1 ₁/₄	279	279	32	159	111.1	64	29	6.4	4-26	300	-	120	-	25	-
	40	1 ₁/₂	305	305	38	178	123.8	73	32	6.4	4-29	350	-	130	-	33	-
	50	2	368	371	49	216	165.1	92	38.5	6.4	8-26	500	-	160	-	48	-

 

 

 

 

Forged Steel Floating Ball Valve

 

The floating ball valve manufactured by our company is generally employing casted steel valve body, however, as required by customers, forged steel valve body is also available, of which the main sizes such as flange connections and face to face dimensions are the same as that of the cast steel ball valve.

 

 

 

Ball Valve with Reduced Bore

 

In addition to the full bore floating ball valve, our company is also manufacturing the floating ball valve with reduced bore to satisfy different requirement of customers, which can not only lower the cost and the pricing, but also meet customers' special requirement.

 

Size		Class 150,PN20						Class 300,PN50						Class 600,PN110
DN	NPS	L		d	d₁	H	W	L		d	d₁	H	W	L	d	d₁	H	W
		Long	Short					Long	Short
15	¹/₂	108	108	10	4	80	140	140	140	10	14	80	140	165	0	14	75	140
20	³/₄	117	117	14	19	85	140	152	152	14	19	85	140	190	14	19	79	140
25	1	127	127	20	25	90	140	165	165	20	25	90	140	216	20	25	83	140
32	1 ₁/₄	140	140	25	32	99	150	178	178	25	32	99	150	229	25	32	114	150
40	1 ₁/₂	165	165	32	38	105	180	190	190	32	38	105	180	241	32	38	120	200
50	2	178	178	38	51	126	200	216	216	38	51	126	200	292	38	51	125	250
65	2 ¹/₂	190	190	51	64	140	250	241	241	51	64	140	250	330	51	64	156	300
80	3	203	203	64	76	165	300	283	283	64	76	165	300	356	64	76	172	350
100	4	229	229	76	102	178	350	305	305	76	102	178	350	432	76	102	220	500
125	5	356	356	102	127	230	500	381	381	102	127	230	500	508	102	127	250	650
150	6	394	267	127	152	280	800	403	403	127	152	280	800	-	-	-	-	-
200	8	457	292	152	203	310	800	502	419	152	203	310	800	-	-	-	-	-
250	10	533	330	203	254	350	1000	568	457	203	254	350	1000	-	-	-	-	-

 

Notes: 1. Sizes of flange connection of the ball valve with reduced bore are the same as that of full bore ball valves.

            2. There are two series of face to face dimensions i.e., the long series and the short series, for some of ball valves with reduced bore.