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Manual NBR Seats Cast Iron Butterfly Valve / PN16 Butterfly Valve Simple Structure

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Manual NBR Seats Cast Iron Butterfly Valve / PN16 Butterfly Valve Simple Structure

Country/Region	china
City & Province	shanghai shanghai
Categories	Valves

Product Details

Manual NBR Seats Cast Iron Butterfly Valve PN16 Simple Structure

Quick Details

1. Valve Type: Cast Steel Lug Type Hard Seal Butterfly Valve

2. Standard: API609

3. Pressure rating: Class 150LB -300LB - 600LB

4. Size: 2” - 60"

5. Body materials: Carbon steel WCB

6. Disc: Carbon Steel (WCB), Stainless Steel (CF8 / CF8M)

7. Stem material: Stainless Steel 13Cr, F304 / F316, 17 -4PH

8. Actuator: Manual, Worm gear

9. Body Design: High Performance, Triple Offset, Three- Eccentric

Features

1. The Seal Principle of Metal Seated Butterfly Valve Triple Offset

The Triple Offset Butterfly Valve provides a bi-directional bubble tight shut-off.This geometry ensures that the disc seal contacts the body seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient “wedging” to ensure auniform seal contact.

2. The Triple Offset Geometry
OFFSET 1 The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat

OFFSET2 The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve

0FFSET3 The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.

3. Friction Free Sealing for Long Cycle Life
(1) Seat is Cr13 Metal alloy or hardfaced with Stellite as standard.

(2) The gasket is spiral wound SS/Graphite for zero leakage.

(3) Seat ring forces are generated by the torque during closing uniformly around the entire circumference. The resilient seal fleses and energizes, assuming the shape of the seat. The compression forces equally distributed around the perimeter provide a tight bi-directional shut off.
The resiliency of the seal allows the valve body and disc to contract or expand, without the risk of jamming due to temperature fluctuations. It is self-adjusting.

2. Main Connection Dimensions or Lug Butterfly Valve

Class	Size			Class	Size
Class	NPS	DN	L	Class	NPS	DN	L
150Lb	2	50	43	300Lb	2	50	43
	21/2	65	46		21/2	65	46
	3	80	48		3	80	48
	4	100	54		4	100	54
	5	125	56		6	150	59
	6	150	57		8	200	73
	8	200	64		10	250	83
	10	250	71		12	300	92
	12	300	81		14	350	117
	14	350	92		16	400	133
	16	400	102		18	450	149
	18	450	114		20	500	159
	20	500	127		24	600	181
	24	600	154	600Lb	2	50	43
	26	650	154		21/2	65	46
	28	700	165		3	80	54
	30	750	165		4	100	64
	32	800	190		6	150	78
	36	900	200/203		8	200	102
	38	950	200/203		10	250	117
	40	1000	216		12	300	140
	42	1050	216/251		14	350	155
	44	1100	216/251		16	400	178
	48	1200	254/276		18	450	200
	52	1300	254		20	500	216
	56	1400	279		24	600	232
	60	1500	279

2. Main Connection Dimensions or Lug Butterfly Valve

Class	Size			Class	Size
Class	NPS	DN	L	Class	NPS	DN	L
150Lb	2	50	43	300Lb	2	50	43
	21/2	65	46		21/2	65	46
	3	80	48		3	80	48
	4	100	54		4	100	54
	5	125	56		6	150	59
	6	150	57		8	200	73
	8	200	64		10	250	83
	10	250	71		12	300	92
	12	300	81		14	350	117
	14	350	92		16	400	133
	16	400	102		18	450	149
	18	450	114		20	500	159
	20	500	127		24	600	181
	24	600	154	600Lb	2	50	43
	26	650	154		21/2	65	46
	28	700	165		3	80	54
	30	750	165		4	100	64
	32	800	190		6	150	78
	36	900	200/203		8	200	102
	38	950	200/203		10	250	117
	40	1000	216		12	300	140
	42	1050	216/251		14	350	155
	44	1100	216/251		16	400	178
	48	1200	254/276		18	450	200
	52	1300	254		20	500	216
	56	1400	279		24	600	232
	60	1500	279