Name: Globe Valve 2 Inch Class 150 Flanged Glandless
Brand: Supreme Valves India
SKU: GLBV-2IN-150-GLANDLESS
Availability: InStock
Rating: 4.8 (127 reviews)

Question 1

What does 'glandless' mean for a globe valve?

Accepted Answer

A 'glandless' globe valve replaces the traditional gland packing assembly (which requires periodic re-tightening and can leak steam or process fluid around the stem) with a bellows seal or a fully enclosed diaphragm/pring-loaded stem guide system. In a glandless design, the stem entry point is sealed by a permanently welded or bellows-type seal that completely eliminates stem leakage — which is the primary failure mode in conventional globe valves. Glandless globe valves are specified for: high-pressure steam lines where stem leakage poses a safety hazard, toxic or hazardous fluid service where any leakage is unacceptable, and high-purity process lines (chemical, pharmaceutical, food-grade) where stem weeping is contaminating.

Question 2

How does a glandless globe valve compare to a standard API 600 globe valve?

Accepted Answer

Key differences: (1) Stem sealing — standard API 600 globe valves use graphite gland packing that requires periodic re-tightening; glandless valves use bellows or diaphragm seals that are maintenance-free, (2) Leak-free guarantee — glandless valves are certified to zero leakage (bubble-tight) at the stem; standard valves allow slight stem seepage per API 600, (3) Cost — glandless valves cost 2–4× more than standard globe valves due to the specialized sealing technology, (4) Maintainability — glandless seals are not field-repairable; the entire seal assembly must be replaced if damaged. Standard graphite packing is field-adjustable and replaceable, (5) Application — glandless is preferred for critical steam, toxic, and high-purity service; standard API 600 is preferred for general utility steam, water, and oil service.

Question 3

What are the pressure-temperature ratings of a 2-inch Class 150 carbon steel globe valve?

Accepted Answer

A 2-inch Class 150 carbon steel (WCB) globe valve per ASME B16.34 is rated for: 285 PSI (19.6 bar) at -29°C to 38°C; 260 PSI (17.9 bar) at 200°C; 230 PSI (15.9 bar) at 300°C; 200 PSI (13.8 bar) at 400°C; 170 PSI (11.7 bar) at 425°C. For saturated steam at 10 bar (150 PSI), the valve is well within its rating at approximately 180 PSI working pressure. For superheated steam at higher temperatures, always verify against the ASME B16.34 rating chart for WCB at your specific operating temperature.

Question 4

What are the advantages of a flanged globe valve over a butt-weld globe valve?

Accepted Answer

Flanged globe valves offer three key advantages over butt-weld end valves: (1) Ease of installation — flanged connections can be assembled and disassembled without special welding equipment or qualified welders; useful in plants where shutdown time is limited, (2) Maintenance — the valve can be removed for inspection, repair, or replacement without cutting the pipeline; significant labour cost savings over butt-weld, (3) Inventory simplicity — spare flanged valves can be stocked and installed quickly; butt-weld valves require careful measurement and potentially custom spool pieces for replacement. The tradeoff: flanged valves are larger (longer face-to-face) and slightly more expensive than their butt-weld equivalents. For 2-inch Class 150 applications, the flange connection is the standard specification for most industrial plants.

Question 5

What is the difference between a globe valve and a gate valve for throttling service?

Accepted Answer

Globe valves and gate valves serve different purposes: Gate valves are designed for isolation (open/close) and should not be used for throttling because the flat gate disc can vibrate and cause rapid seat wear at partial openings. Globe valves use a plug, cone, or ball seating element that moves perpendicular to the seat in a guided path — providing: (1) linear flow characteristic ideal for throttling, (2) guided stem that prevents disc tilt and uneven seat wear, (3) ability to position at any intermediate opening without damage, (4) faster closing action that reduces water hammer. For a 2-inch Class 150 glandless globe valve, the application should be throttling or modulating service where the glandless design prevents stem leakage of the controlled fluid.

Question 6

What industries and applications commonly specify glandless globe valves?

Accepted Answer

Glandless globe valves are specified in: (1) Thermal power plants — main steam turbine bypass lines, boiler feedwater heater drains, steam tracing lines, (2) Oil and gas — hydrocarbon process lines where stem leakage poses environmental or safety risks, (3) Chemical and petrochemical — toxic, corrosive, or high-purity chemical lines, (4) Pharmaceuticals and food — sterile steam and process media lines, (5) District heating — medium to high-pressure steam distribution networks. In India, glandless globe valves are frequently specified for IBR-certified steam boiler connections where stem seepage into the engine room is a HSE (Health, Safety, Environment) concern. The 2-inch Class 150 glandless CS globe valve is a standard specification for steam tracing and instrument air headers in process plants.

Component	Material Specification
Body & Bonnet	Ductile Iron (ASTM A536 / EN-GJS-400-15)
Stem / Spindle	SS 410 / SS 420
Seat / Trim	EPDM / NBR / Bronze

Parameter	Specification / Standard
Manufacturing / Design Standard	EN 1171 / AWWA C509 / BS 5163
Testing Standard	API 598 / EN 12266-1
Pressure Rating	PN16 / PN25

S.N.	Parts Name	Material	Qty
01	Body	CF8/CF8M/C. I./C. S.	1
02	Bonnet	CF8/CF8M/C. I./C. S.	1
03	Seat Ring	CF8/CF8M/C. I./C. S.	1
04	Globe	CF8/CF8M/AISI 410 (13%CR)	1
05	Stem	CF8/CF8M/AISI 410 (13%CR)	1
06	Stem Nut	S.S./AISI 410 (13% CR)	1
07	Bonnet Bush	S.S./AISI 410	1
08	Gland	S.S./Carbon Steel	1
09	Gland Packing	Metallic Wire Reniforced Graph Oil	-
10	Yoke Sleeve	Cast Steel/ Ni-resist	1
11	Bonnet Gasket	Spiral Wound Metallic/CAF	1
12	Bonnet Stud & Nut	S.S./M.S.	-
13	Eye Bolt & Nut	S.S./M.S.	2
14	Hand Wheel	Cast Iron/S.G. Iron	1
15	Hand Wheel Nut	Cast Steel	1

Size	A	B	ØC	ØD	ØM	N	PCD
25	127	11.1	51	108	16	4	79.2
40	165	14.2	73	127	16	4	98.5
50	203	15.7	92	152	19	4	120.5
65	216	17.5	105	178	19	4	140
80	241	19	127	190	19	4	152
100	292	24	157	229	19	8	190.5
125	356	24	186	254	22	8	216
150	406	25.4	216	279	22	8	241
200	495	28.4	270	343	22	8	298
250	622	30.2	324	406	25	12	362
300	698	31.7	381	483	25	12	432

Globe Valve 2-Inch Class 150 Flanged

Globe Valve — 2" Class 150 — Flanged Glandless

How Glandless Seal Technology Works

Bellows Seal at Stem Entry

Zero Leakage at Stem

Secondary Backup Seal

Materials of Construction (MOC)

Technical Specifications

Material of Construction

Testing Details & Standards

Dimension Tables