H48h Forged Type Flanged Feed Water Pump Protection Check Valve

• Media: Water
• Temperature: High Temperature
• Material: Wcb, Wc6, Wc9, 12crmo, 12crmov, 15CrMo, 15crmov
• Connection Form: Welding
• Structure: Piston
• Pressure: High Pressure
• Model NO.: H48H
• Function: Non Return
• Sealing Form: Self Tight Pressure Sealing
• Flow Direction: Unidirection
• Standard: ANSI
• Application: Industrial Usage, Water Industrial Usage
• Transport Package: Plywood Case
• Trademark: GOOLE, OEM, ODM
• Origin: China(Mainland)
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

H48h Forged Type Flanged Feed Water Pump Protection Check Valve

Product Description

H48H Forged Type Flanged Feed Water Pump Protection Check Valve is installed on the high pressure feed water pump outlet pipeline of the thermal power unit to prevent backflow of the feed water and protect the feed water pump. The valve cooperates with the pump's small flow to automatically re-circulate the side valve. When the feed pump is at a low load or the exit door is closed, the automatic recirculation bypass valve should be in the open position to ensure the safe operation of the pump. When the empty exhaust check valve opens, the recirculation bypass valve closes automatically. It should not be used for media containing solid particles and high viscosity.

It's Installed on the high-pressure feed water pump outlet pipeline of the thermal power unit to prevent reverse flow of feed water and protect the feed pump. This valve cooperates with the pump's small flow automatic recirculation side valve work, when the feed water pump is in the low load or exit door closed state, automatic recirculation The bypass valve should be in the open position to ensure the safe operation of the pump. When the empty exhaust check valve is opened, the recirculation bypass valve is automatically closed.

Working Principle

Working principle: Open the outlet valve and start the feed pump. After the feedwater reaches a certain pressure, the valve disc will rise to a certain height under the action of the feedwater pressure. Pushing the valve seat will cause the water to flow out. At the same time, due to the rise of the valve disc, The connecting rod rotates, and the discharge valve piece is toggled to move the recirculating blade valve downward and close the emptying port. When the flow of the water supply decreases, the valve disc falls, pushing the connecting rod to open the emptying valve piece, and then opening it again. The circulating valve maintains a small allowable flow rate of the pump. When the pump is stopped, the valve flap automatically falls and closes the valve port passage to prevent the destruction of the high pressure water hammer water supply system.

Product Features

Structural features:

A. The air exhaust check valve cooperates with the recycle bypass valve to maintain the safe operation of the system.
B. When the main valve flap moves up and down and the medium flows backward, the channel is closed by means of the medium pressure and the action of the spring. At this time, the bypass valve is opened. When the main valve flap is fully opened, the bypass valve is closed.
C. The valve flap seal is made of stainless steel surfacing. It is wear-resisting, has strong anti-scratch and reliable sealing.
D. H48H Forged Type Flanged Feed Water Pump Protection Check Valve should be installed vertically.
 

Product Details

 

Product Parameters

Trunnion Ball Valve Dimensions

Size	in	2	2 1/2	3	4	6	8	10	12	14	16
	mm	50	65	80	100	150	200	250	300	350	400
L/L1(RF/BW)	in	17.75	20.00	22.75	26.5	36.00	40.25	50.00	56.00	/	/
	mm	451	508	578	673	914	1022	1270	1422	/	/
L2(RTJ)	in	17.88	21.25	23.00	26.88	36.50	40.88	50.88	56.88	/	/
	mm	454	540	584	683	927	1038	1292	1445	/	/
H	in	7.50	9.00	11.00	14.12	15.75	18.88	20.50	26.38	/	/
	mm	190	230	280	360	400	480	520	670	/	/
W	in	24	32	32	32	32	40	40	40	/	/
	mm	600	800	800	800	800	1000	1000	1000	/	/
WT(Kg)	RF/RTJ	68	95	120	185	675	1100	1650	2300	/	/
	BW	54	74	91	122	555	918	1355	2950	/	/

 

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