4 in. Cast Iron Wafer Silent Check Valve
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Mueller Steam Specialty
Model 91A 4 in. Cast Iron Wafer Silent Check Valve
Purchase history
Mueller Steam Specialty
Model 91A
4 in. Cast Iron Wafer Silent Check Valve
M6741057
Order #
Order Date
Job Name
My PO#
Frequently Purchased Together
Product Details
- Mating surfaces of the disc and seat are hand lapped for best possible sealing
- Disc is fully guided at top and bottom to insure alignment and sealing at any installation angle
- Spring closes the disc before flow reversal, preventing surge and water hammer
- Disc opens 1/3" per inch of line size, greater than similar competitive products, for enhanced flow.
- Disc begins to open at .5psi
Documents
Specifications
- ASTM:
- ASTM A-126 Grade B
- Clean Bagged:
- No
- Collection:
- Model 91A
- FM Approved:
- No
- Height:
- 4 in
- IAPMO Listed -:
- No
- Installation Type:
- Horizontal Mount, Vertical Mount
- Length:
- 7-3/4 in
- Material:
- Cast Iron
- Maximum Temperature:
- 150
- NSF Certified:
- No
- Origin:
- Global
- Pressure - High:
- 200
- Pressure Class:
- 150#
- Recommended Valve Application:
- Gas, Liquid, Water
- UL Listed:
- No
- Valve Body Material:
- Cast Iron
- Valve Body Style:
- Wafer
- Valve Disc Material:
- 316 Stainless Steel
- Valve Operator:
- Lever
- Valve Seat Material:
- Bronze
- Valve Size:
- 4 in
- Valve Type:
- Silent Check Valve
- Weight:
- 17 lb