Product Description Model NO.: H41 Connection Form: Flange Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence Standard: ANSI Characteristic: Duckbill Check Valve Pre-Temp. Rating: Asme B16.34 Ends Connection: Ends Connection Certificate 1: Dnv CE 0575 Certificate 3: API 600 Trademark: VATAC/VANGO or OEM Origin: China Material: Cast Steel Pressure: Low Pressure Flow Direction: Unidirection Application: Industrial Usage, Water Industrial Usage, Household Usage Design & Manufacture: API 6D, Asme B16.34 Face to Face: Asme B16.10 Inspect & Test: API 598 Certificate 2: ISO 9001: 2008 Certificate 4: API 6D Specification: API, ANSI, ASME, BS, DIN, JIS, GB etc. HS Code: 84818010 2"~40" 150LB Duckbill Check Valve Of  Vatac Series Duckbill Check Valves are a flexible sleeve design made of quality fab- ric-reinforced elastomer materials for maxi-mum resistance to corrosion and wear caused by continuous operation with abrasive slurries, sludge, or effluent. The flexible sleeve provides maximum flow with a mini-mum pressure drop across the valve at all times.

1. Construction is as follows:

- Flange Duckbill Check Valve

- Slip-over Duckbill Check Valve

- In-line Duckbill Check Valve

- Low Pressure

- Flanged Ends to ASME B16.5 and B16.47 A/B

2. Main Part & Materials

Part Names	Part Materials
Flange	Q235	F304	F316	F304L	F316	F316L	SAF 2205	BRONZE
Body Material	NATURAL RUBBER/NBR/EPDM
Suitable Medium	Water, Waste Water and Sewage
Suitable Temperature	-29~120 °C

3. Normal Pressure Rating
PN10 & PN16, CLASS150

4. Normal Size Range
DN50~D1000, 2"~40"

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Product Categories : Check Valve > Flap & Buckbill Check Valve