Closed Flange Check Valve

• Media: Oil
• Temperature: Ordinary Temperature
• Material: Cast Steel
• Model NO.: HH49X-16C
• Connection Form: Welding
• Structure: Butterfly
• Pressure: Low Pressure
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Sealing Form: Bellows Globe Valve
• Flow Direction: Bidirectional
• Standard: GB
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Transport Package: Cartons
• Production Capacity: 50000

Product Description

Product Description

Industrial Micro Resistance Slow Closing Check Valve

Purpose
This valve is mounted on the pump outlet of the water supply and drainage system in industrial,agricultural,city,building etc.trades and used to prevent the medium from backflow, eliminate water hammer and ensure both pump and pipeline to work safely.
Features
With a balancing hammer set, there is a small resistance with the disc at swinging to the water-flow and the force to open the valve comes as only 1/5 that of the original swing type.
There is a damper set on the rest travel section of the disc after being closed and the damping time can be adjusted to prevent destructing water hammer from being produced.
A good tightness with the disc, reducing vibration, wearable and long durable.
Steady work, low noise.
Executive standard
Flange standard: GB/T17241.6(cast iron ),GB/T9113(cast steel)
Test and inspection:GB/T13927
Performance range 

PN	1.6	MPa
Strength test	2.4
Sealing test	1.76
Suitable temperature	≤80	ºC
Media used	water
Adjustable time on the slowly closing section	0~60S

Main part materials

Title of part	Material
Body/Bonnet	Grey cast iron, ductile iron, cast steel
Disc	Rubber lined steel skeleton
Stem	Stainless steel
Adjusting valve/piston	Adjusting valve/piston

Main dimensions

DN	100	125	150	200	250	300	350	400	500	600	700	800	900	1000
L	350	400	480	500	600	700	800	900	1100	1300	1400	1500	1700	1900
A	230	240	260	350	390	400	460	550	640	740	750	800	900	1000
B	340	370	402	470	550	622	660	800	950	1100	1180	1250	1470	1570
H	460	500	580	680	730	850	950	1030	1262	1520	1644	1774	2084	2195
Hı	200	234	274	302	348	370	410	450	550	635	720	780	920	970