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Inverted Pressure Balance Lubricated Plug Valve

The Inverted Pressure Balance Lubricated Plug Valve offered by WELCO Valve Co., Ltd. is a high-quality valve designed for long-lasting performance in various industrial applications. This valve features a unique inverted pressure balance design that provides enhanced sealing and reduced friction, ensuring smooth and reliable operation. The lubricated plug valve is specially engineered to withstand high pressure and temperature conditions, making it suitable for use in demanding environments such as chemical processing, power generation, and oil and gas. WELCO Valve Co., Ltd. is committed to delivering superior products and the Inverted Pressure Balance Lubricated Plug Valve is no exception, offering exceptional durability, minimal maintenance, and excellent performance. With a focus on quality and innovation, WELCO Valve Co., Ltd. continues to be a trusted provider of valves for a wide range of industries

product details

Product parameter

Design description

• RUGGED, HEAVY-DUTY BODY • BOLTED BONNET CAP

• PTFE SLEEVEDJAPERED PLUG • REGULAR/FULL PORT OPENINGS • LUBRICATED

• STEM INTEGRALWITH PLUG

• IN-LINE ADJUSTMENT

• FIRE SAFE CONSTRUCTION

• ANTI-STATIC DEVICE

• STOPPER DEVICE

• RENEWABLE SEAT RING • FLANGED OR BUTTWELDING ENDS • AVAILABLE WITH WG OPERATOR ETC

Applicable Standards

• STEEL PLUG VALVES: API 599/API6D

• STEEL PLUG VALVES: ISO14313

• FIRE SAFE:API 607

• ANTI-STATICS: API 599

• STEEL VALVES: ASME B16.34

• FACE TO FACE: ASME B16.10

• END FLANGES: ASME B16.5

• BUTTWELDING ENDS: ASME B16.25

• INSPECTION AND TEST: API 598/API 6D

Main parts and material list

NO	Part Name	ASTM Material
NO	Part Name	Carbon steel	304 Type	316 Type	304L Type	316LTyps	20 Alloy
1	Body	A216 WCB	A351 CFS	A351 CF8M	A351 CFS	A351 CF3M	A351 CN7M
2	Bonnet	A216 WCB	A351 CF8	A351 CF8M	A351 CF3	A351 CF3M	A351 CN7M
3	Plug	A182 F304	A182 F304	A182 F316	A182 F304L	A182 F316L	20 Alloy
4	O-Ring	Viton
5	Bonnet Gasket	304+graphite	304+graphite	316+graphite	304L+graphite	316L+graphite	316+graphite
6	Adjusting Gasket	A182 F6a	A182 F304	A182 F316	A182 F304L	A182 F316L	20-Alloy
7	Adjusting Bolt	A193 B7	A276 304	A276 316	A276 304L	A276 316L	20-Alloy
8	Bonnet Bolt	A193 B7	A193 B8	A193 B8M	A193 B8	A193 B8M	A193 B8
9	Bonnet Nut	A194 2H	A194 8	A194 8M	A194 8	A194 8M	A194 8
10	Handle	Carbon steel	Carbon steel+Zn
11	Nipple	Commercial
12	Packing	Graphite	Graphite *1	Graphite *1	Graphite *1	Graphite *1	Graphite *1
13	Gland Flange	A216 WCB	A351 CF8	A351 CF8	A351 CF8	A351 CF8	A351 CF8
*1		PTFE Optional

Main Outline Dimensions & Weight Class 150Lb

NPS	0.5	0.5	1	1.25	1.5	2	2.5	3	4	5	6	8	10	12	14
DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350
A1	108	117	127	140	165	178	190	203	229	245	267	292	330	356	381
A2	152	178	203	216	229	267	305	330	356	381	394	457	533	610	686
H	110	115	225	135	140	150	165	180	380	460	520	580	260	680	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
Weight (kg)	8.5	9.5	10	12	14	22	22	26	40	60	70	130	219	381	570

Main Outline Dimensions & Weight Class 300Lb

NPS	0.5	0.5	1	1.25	1.5	2	2.5	3	4	5	6	8	10	12	14
DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350
A1	140	152	165	178	190	216	241	283	305	381	403	419	457	502	762
A2	152	178	203	216	229	267	305	330	356	381	457	521	559	635	762
H	110	115	115	135	140	150	165	180	380	460	520	580	620	680	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
Weight (kg)	9.5	10.5	12	14	16	20	24	29	53	75	85	185	230	390	550

Main Outline Dimensions & Weight Class 600Lb

NPS	0.5	0.5	1	1.25	1.5	2	2.5	3	4	5	6	8	10	12	14
DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350
A1/A2	165	190	216	229	214	292	330	356	432	508	559	660	787	838	889
H	110	115	115	135	140	150	165	180	380	460	520	580	620	680	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
Weight (kg)	11	13	17	20	23	27	31	36	72	98	141	245	330	515	710

Main Outline Dimensions & Weight Class 900Lb

NPS	0.5	0.5	1	1.25	1.5	2	2.5	3	4	5	6	8	10	12	14
DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350
A1/A2	229	229	254	279	305	368	419	381	457	559	610	737	838	965	1029
H	110	115	115	135	140	150	165	180	380	460	520	580	620	680	760
W	175	175	175	220	280	305	350	405	300	300	320	320	350	380	450
Weight (kg)	131	16	21	24	28	325	40	47	91	117	165	285	420	610	860