DGL Minimum cycle flow control valve of boiler feed pump

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Technical parameters and performance：

Body：

type ： forge angle or “Z" Body
DN ：DN50-DN125
Nominal pressure：ANSI 1500, ANSI2500 or PN25, PN32MPa
Connection Type：BW welding type( or following your demands)
Materials：20# forge

Upper cap：

Normal temperature≤300℃

cap form: bolt Clamp
packing： nickel wire winded graphite packing.

Valve components：

valve spool type ： valve spool
Flow Characteristics: Two-type switch
Medium flow: high-low
Materials：Stainless Steel nitriding

Performance：

Permissible pressure difference：26MPa
Leakage：ANSI B.16104-1976IV
Operating time: less than ten seconds, fully closed to fully open

actuator：

Power-driven actuator

Materials：

No.	Name	Materials	No.	Name	Materials	No.	Name	Materials
1	Joint pipe	20# forge	6	Body	20# forge	11	round nut	45
2	Short pieces	20# forge	7	round pin	316	12	packing cap	304
3	Throttling component	9Cr18MoV nitriding	8	valve handle	2Cr13 nitriding	13	pressing sheet	20#
4	valve spool jacket	9Cr18MoV nitriding	9	packing baffle ring	304	14	stud	35CrMo
5	valve spool	9Cr18MoV nitriding	10	packing	JM397	15	hexagonal nuts	35CrMo

Kv value and stroke：

DN	50	80	80	100	80	100	125
Nominal pressure PN(MPa)	25		25		32	32
Kv value	11		17		11	24/22
Design flow T/h	120		200		150	320
Design pressure difference MPa)	18		18		20	20
stroke(mm)	20					25

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