JD74X

the safety and reliability of water supply system. Double chamber and double valve structure can make the rapid closure of the valve after the pump is stopped (90% in the medium causes the pump to prevent backflow reversal), then slowly close the remaining 0% L (eliminate damage (raw water hammer) piston type valve is reliable in performance, high strength, smooth movement, prevent water hammer and open the pump water hammer. Only need to operate the pump motor on-off button, the valve can automatically according to the pump operating procedures open and close, large flow, low pressure loss.
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.

Serial number	Part name	Part material
1	Valve body valve cover	WCB
2	Valve seat disc	Copper alloy/2Cr13
3	Sealing ring O ring	Nitrile rubber
4	The stem	2Cr13
5	Spring	50CrVA
6	Cylinder piston (piston type)	2Cr13
7	Diaphragm (diaphragm type)	Clip fabric nitrile rubber
8	Regulating valve ball valve	Copper alloy
9	Filter	Stainless steel

Nominal pressure (Mpa)	Shell test pressure (MPa)	Seal test pressure (MPa)	Pressure regulating range (MPa)	Slow closing time (S)	Minimum action pressure (MPa)	Applicable medium	Medium temperature (℃)
1.0	1.5	1.1	0.09-0.8	3-60 (Adjustable)	≥0.07	water	0-80
1.6	2.4	1.8	0.15-1.4
2.5	3.75	2.8	0.2-2.0

DN	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700	800	900	1000	1200	1400
L	205	216	250	320	365	415	500	605	698	787	914	978	978	1150	1300	1450	1650	1800	2000	2350
H	293	328	364	418	481	543	673	729	927	957	1188	1218	1600	1800	2000	2300	2600	2700	2860	3200