Screwed End Forged Steel Check Valves

Product Detail

As one of the leading screwed end forged steel check valves manufacturers and suppliers in China and equipped with a productive factory, Shanghai Hugo Valve Co.,Ltd is always at your service.

Screwed end forged steel check valves
 Description
1. There are three disc structures for forged stainless steel or a105 check valves npt, one is lift piston type forged steel check valve, another one is ball type forged steel check valves screwed, the third one is swing type Female forged steel check valves. The first type lift piston forged steel check valves was used widely.
2. There are three types bonnet designs also for Threaded end forged steel check valves, they are bolted bonnet, welded bonnet and pressure seal tightening bonnet, but the bolted bonnet type be used usually. The structure are as bellow picture:



Construction


FP or RP (Full port or reduced port)
Integral backseat
Screwed end confirm to ASME B1.20.1
Application standard
1, design & manufacturer according to : API 602; BS5352;ASME B16.34
2, Threaded end dimension confirm to ANSI B1.20.1
3, Inspection and test confirm to API 598
4, main material : A105;LF2;F5;F11;304(L);316(L);F347;F321;F51;Monel;20#alloy steel etc which confirm to ANSI/ASTM.
5, pressure grade : 800 class, 1500 class, 2500 class




Dimension for 800 class (Bolted bonnet type, lift piston design )

(NPS)Specification	R.P	-	1/2''	3/4''	1''	1 1/4''	1 1/2''	2''	2 1/2''
	F.P	1/4''	3/8''	1/2''	3/4''	1''	1 1/4''	1 1/2''	2''
Face to face	L	79	79	92	111	120	152	172	220
Height	H	61	61	61	78	84	84	120	133
Flow port dimension	d	7	9	13	17.5	23	30	35	46
Weight(kg)		1.2	1.5	1.7	3.3	4.2	4.2	10.5	12.5