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Din Check Valve PN25 BW End

DIN Cast Steel Check Valve

The main features of our Check valves can be:

●Bolted bonnet

●Pressure seal bonnet

●Thread in or welded bonnet

●Cast or forged

●Swing check, piston check, ball check

●Welded in or replaceable seats

●Dual plate check valves

Materials : GG25(EN-GJL-250),GGG40,1.0619+N(GS-C25),1.4308(CF8), 1.4408(CF8M)

Size range : DN15-DN400

Pressure : PN16-PN40

Temperature : ≤425 ℃

Fig No. : H44H


Size:	1/2 Inch(DN15,100pcs) 3/4 Inch(DN20,100pcs) 1 Inch(DN25,100pcs) 1-1/4 Inch(DN32,100pcs) 1-1/2 Inch(DN40,100pcs) 2 Inch(DN50,100pcs) 2-1/2 Inch(DN65,100pcs) 3 Inch(DN80,100pcs) 4 Inch(DN100,100pcs) 5 Inch(DN125,100pcs) 6 Inch(DN150,100pcs) 8 Inch(DN200,100pcs) 10 Inch(DN250,100pcs) 12 Inch(DN300,100pcs) 14 Inch(DN350,100pcs) 16 Inch(DN400,100pcs) 18 Inch(DN450,100pcs) 20 Inch(DN500,100pcs)
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Application
Hot oil system, steam system, hot and cold water system etc.
Advantage
1.Bellow seal element. The key part of bellow sealed globe valves is metal bellow. It is the connection between cover and stem with automatic roll welding. The metal bellow can keep the stem part no leakage.
2.Benefit from the con and streamline shape design, the disc has a reliable seal and longer service life.
3.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal.
4.Grease nipple. It can direct lubricate the stem, nut and sleeve.
5.Ergonomic hand wheel. It provide longer service life and easier operation.
Technical specification
Design standard: DIN 3356
Face to face dimension: DIN 3202
Flanged ends: DIN 2543-2545
Test & inspection: DIN 3230
Nominal Pressure		PN
Test Pressure	Strength test	1.5PN	MPa
	Sealing test	1.1PN
	Gas seal test	0.6
	--	--
Suitable temp		-196℃~600℃

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