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Electric single seat control valve

Product model: ZSAP

Nominal diameter: NPS 1-1 / 2 "~ 24" (DN20 ~ DN300)

Nominal pressure: CLASS150 ~ CLASS600 (PN16 ~ PN100)

Applicable temperature: - 196 ℃ ~ 540 ℃

Flow characteristics: equal percentage

Gland type: bolt compression type

Main materials: carbon steel, stainless steel, duplex stainless steel, Inconel, Monel, Hastelloy, Ti, etc

Flange standard: PN1.6 according to JB79-59 standard, PN4.0 according to JB79-59 standard

Bonnet type: standard type, extended type, low temperature type, bellows, insulation jacket type

Product details

PRODUCT OVERVIEW

The electric single seat regulating valve adopts the fluid pressure unbalanced valve core structure, and the special single seat valve core and cage top guided valve internals combined structure, which not only has the characteristics of single seat regulating valve, but also has the dynamic stability of sleeve regulating valve. The cage guiding sleeve also plays the role of anti scouring and air defense; The quick release valve trim assembly is very convenient for the renewal of trim. It is suitable for small gauge, high pressure difference, high temperature and other harsh working conditions, especially for all kinds of slurry, polymer and high temperature media. It is widely used in automatic control systems such as large thermal power plants, chemical plants, water treatment and sewage treatment, natural gas oil fields, steel plants and so on.

MAIN TECHNICAL PARAMETERS

Nominal diameter(DN)		20	25	32	40	50	65	80	100	125	150	200	250	300
Seat diameter(dn)		20	25	32	40	50	65	80	100	125	150	200	250	300
Rated flow coefficient(KV)	Single seat	6.9	11	17.6	27.5	44	69	110	176	275	440	630	875	1250
Rated flow coefficient(KV)	Sleeve	6.3	10	16	25	40	63	100	160	250	360	570	850	1180
Nominal pressure(MPa)		1.6、2.5、4.0、6.4、10.0、16.0、25.0
Rated stroke(mm)		16			25		40			60			100
Bonnet form		Standard type (- 17 ~ + 250 ℃), high temperature type (+ 250 ~ + 450 ℃), low temperature type (- 40 ~ - 196 ℃), bellows sealing type (- 40 ~ + 350 ℃)
Gland type		Bolt compression type
Sealing packing		V-type PTFE packing, V-type flexible graphite packing
Sealing packing		Single seat, cage and sleeve type
Flow characteristics		Equal percentage
Allowable differential pressure(MPa)	Single seat	3.8	3.2	3.0	2.0	1.8	1.5	1.4	1.0	0,7	0.6	0.5	0.3	0.1
Allowable differential pressure(MPa)	Sleeve	6.4	6.4	5.2	5.2	4.6	4.6	3.7	3.7	3.5	3.1	3.1	2.6	2.2
Configure actuator category		German PS, British rotoc, German Eurocode, Siemens and other electric actuators
Actuator parameters		Power supply voltage: 220V, 380V, input signal: 4-20mA or 1-5V · DC, output signal: 4-20mA · DC
		Protection grade: equivalent to IP65, IP67, flameproof sign: Exd Ⅱ BT4 (Exd Ⅱ BT6 specially customized), manual operation function: handle
		Ambient temperature: - 25 ~ + 70 ℃, ambient humidity: ≤ 95%

MATERIAL OF MAIN PARTS

1	Valve body	WCB	304	316	316L
2	Shim	PTFE\Graphite gasket	PTFE\Graphite gasket	PTFE\Graphite gasket	PTFE\Graphite gasket
3	Seat / sleeve	304	304	316	316L
4	Spool	304	304	316	316L
5	Guide sleeve / cap	304	304	316	316L
6	Middle cushion	PTFE\Graphite gasket	PTFE\Graphite gasket	PTFE\Graphite gasket	PTFE\Graphite gasket
7	Valve cover	WCB	304	316	316L
8	Valve stem	304	304	316	316L
9	Metal pad	304	304	316	316L
10	Filler	PTFE/Graphite	PTFE/Graphite	PTFE/Graphite	PTFE/Graphite
11	Bolt	25	Stainless steel	Stainless steel	Stainless steel
12	Packing gland	WCB	304	316	316L

MAIN PERFORMANCE INDEXES

Project			Index value
Basic error%			±1.0
Return difference%			1.0
Deadband%			1.0
Deviation from starting point%	Power on	Starting point±1.0	End±1.0
	Power on	Starting point±1.0	End±1.0
	Power off	Starting point	±1.0
	Power off	End	±1.0
Rated stroke deviation%			≤1.0
Leakage L / h			0.01%×Valve rated capacity
Adjustable range R			30：1

Main connection dimensions

Nominal diameter(DN)		20	25	32	40	50	65	80	100	125	150	200	250	300
L	PN16/25	181	184	200	222	254	276	298	352	410	451	600	640	880
	PN40	194	197	200	235	267	292	317	368	425	473	610	760	910
	PN64	206	200	210	251	286	311	337	394	440	508	650	810	950
H	PN16/25	52.5	57.5	75	75	85.5	92.5	100	110	142.5	158	170	195	230
	PN40	52.5	57.5	75	75	82.5	92.5	100	117.5	150	167.5	187.5	205	245
	PN64	65	40	85	85	90	102.5	107.5	125	172.5	195	207.5	230	260
H1		132	132	158	170	179	214	221	234	270	294	331	390	450
H2		503	533	512	512	620	575	570	570	555	555	570	756	756
D		460				530				630

Electric single seat control valve

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