Cast Steel Bellow Seal Globe Valve

Bellow Seal Valves are built to prevent leaks. The bellows surround the central stem because they weld at the stem component. Bellows also have contact plates, providing resistance to solid metal and air. Bellow seal globe valve main for steam, hot oil pipeline. It can be used in the field of new energy, pharmaceutical field etc.

Inquire Now Next Product

Product Description

Cast Steel Globe Valves feature a straight pattern (T Type), with a stem that includes an outside screw and yoke (OS&Y), and a plug-type disc (Conic disc). These valves come with a bolted bonnet and full port, ensuring optimal flow. Designed to BS1873/API 627 standards, our globe valves offer flanged or butt welding end connections for versatile installation options.

Why bellow seal globe valves are more tightly sealed than normal globe valve?

1. Unparalleled Seal Integrity: Unlike conventional globe valves that rely solely on padding seals, Bellow Seal Valve boasts double seals with both bellows and padding. This dual-seal system guarantees an airtight, leak-free performance, ensuring that your operations run seamlessly.

2. Extended Service Life: Equipped with a disc featuring a scraping effect, this cast steel bellows globe valve goes the extra mile in terms of durability. The scraping effect minimizes wear and tear, resulting in a prolonged service life, reducing maintenance hassles, and enhancing cost-efficiency.

3. Corrosion Resistance: The interior seals and bellows of our precision valve are meticulously crafted from stainless steel 321. This high-quality material not only enhances corrosion resistance but also significantly extends the valve’s overall service life. You can rely on it for years to come, even in demanding, corrosive environments.

4. Lightweight and Efficient: In addition to its robust features, bellows sealed valve is remarkably lightweight, making it a breeze to operate. Whether you need to open or close the valve, its ergonomic design ensures that the job is done with minimal effort and maximum efficiency.

Cast steel globe valve components

1. Body and Design:

• Straight Pattern (T Type): This design ensures a direct flow path, which minimizes flow resistance and pressure drop, enhancing the valve’s efficiency.

• Design Standard: Adheres to BS1873/API 627 standards, ensuring reliability and compatibility with international projects.

2. Stem and Yoke:

• Stem with Outside Screw and Yoke (OS&Y): Provides a robust and stable mechanism for valve operation, reducing the risk of stem breakage and ensuring longevity.

3. Disc and Sealing:

• Plug-Type Disc (Conic Disc): Offers a precise and reliable seal, crucial for applications requiring tight shutoff and control.

• Seat Face: CoCr alloy hard-faced, ground, and lapped to a mirror finish, ensuring a durable and leak-free seal.

4. Bonnet and Maintenance:

• Bolted Bonnet: Allows for easy disassembly and maintenance, reducing downtime and maintenance costs.

• All Seat Rings Seal Welded as Standard: Provides a secure seal, preventing leaks and ensuring the valve’s integrity.

5. Guided Disc Mechanism:

• Guided Disc: Accurately mates the disc’s hard-faced surface with the body seat, extending the wear life and ensuring precise control.

TECHNICAL SPECIFICATION

Face to face: DIN3202

Flange ends: DIN2543-2546

Design standard: DIN

Test& inspection: DIN3230

Nominal Pressure		PN
Pressure test	Strength test	1.4PN	MPa
	Sealing test	1.0PN
	Gas seal test	0.5
	—	—
Temputer		-20℃~425℃

Main Material(mostly) it can OEM

NO.	Part name	Material
1	Body	1.4401, SS321, SS304
2	Seat	1.4301, Stl
3	Disc	2Cr13, Stl, 507L
4	Pin	2Cr13
5	Bellows	SS321, SS316 ETC
6	Stem	1.4401, 2Cr13
7	Gasket	Flexible graphite + stainless steel
8	Cover	GS-C25, 1.4401, SS321, SS304
9	Nut	ASTM 194-2H, A194-8
10	Double-headed bolt	ASTM 194-B7, A193-B8
11	Packing	BY Ply-wooden case
12	Gland	GS-C25, 1.4301, 1.4401
13	Locator	1C25
14	Stem nut	Copper alloy, D2, BL2
15	Hand wheel	KTH330-08
16	Cap	1C45

Connection Size (DN15-DN350)

PN 16
DN	Main connection size
DN	L	D	D1	D2	b	f	H	n-Φd
15	130	95	65	45	16	2	197	4-Φ14
20	150	105	75	58	18	2	197	4-Φ14
25	160	115	85	68	18	2	205	4-Φ14
32	180	140	100	78	18	2	208	4-Φ18
40	200	150	110	88	18	3	230	4-Φ18
50	230	165	125	102	20	3	233	4-Φ18
65	290	185	145	122	22	3	254	4-Φ18
80	310	200	160	138	24	3	277	8-Φ18
100	350	235	180	158	24	3	365	8-Φ18
125	400	250	210	188	26	3	392	8-Φ18
150	480	285	240	212	28	3	420	8-Φ22
200	600	340	295	268	34	3	580	12-Φ22
250	650	405	355	320	33	3	750	12-Φ25
300	750	460	410	375	33	4	925	12-Φ25
350	850	520	470	435	34	4	1030	16-Φ25
PN 25
15	130	95	65	45	16	2	197	4-Φ14
20	150	105	75	58	18	2	197	4-Φ14
25	160	115	85	68	18	2	205	4-Φ14
32	180	140	100	78	18	2	208	4-Φ18
40	200	150	110	88	18	3	230	4-Φ18
50	230	165	125	102	20	3	233	4-Φ18
65	290	185	145	122	22	3	254	8-Φ18
80	310	200	160	138	24	3	277	8-Φ18
100	350	235	190	162	24	3	355	8-Φ22
125	400	270	220	188	26	3	410	8-Φ26
150	480	285	240	212	28	3	420	8-Φ26
200	600	340	310	278	30	3	540	12-Φ26
250	650	405	355	335	32	3	750	12-Φ30
300	750	460	410	375	34	4	925	16-Φ30
350	850	520	470	435	34	4	1030	16-Φ33
PN 40
15	130	95	65	45	16	2	195	4-Φ14
20	150	105	75	58	18	2	195	4-Φ14
25	160	115	85	68	18	2	207	4-Φ14
32	160	140	100	68	18	2	218	4-Φ18
40	180	150	110	78	18	3	225	4-Φ18
50	230	165	125	102	20	3	230	4-Φ18
65	290	185	145	122	22	3	272	8-Φ18
80	310	200	160	138	24	3	290	8-Φ18
100	350	235	190	162	24	3	355	8-Φ22
125	400	270	220	188	26	3	410	8-Φ26
150	480	300	250	218	28	3	425	8-Φ26
200	600	340	310	278	34	3	540	12-Φ30

Cast steel globe valve applications:

Cast steel bellows sealed valves are used in the piping stem to keep it secure against leakage. When they install correctly, they will lower the damage of leakage.

• Oil/gas refining

• Pulp and paper industry

• Power generation

• Chemical/petrochemical industries