Praher K6 Wafer Check Valves

Valves have a self-cleaning disc design with contoured inlet and improved disc seating (sealing) characteristics. Valves have a flooded disc hinge pin pocket for improved life cycle performance in contaminated fluids. Valves have a round body design with incorporated notches for flange bolt alignment and incorporated valve lifting eyelet with flow direction arrow. Features include engineered and molded with improved hinge and spring design, improved flow rates, an easy spring installation without any special tool requirements, new disc design with conical sealing surface for highest reliability and maximum operating cycles. The flooded flapper hinge pins avoid sediment build up and it has a cylindrically embedded flapper hinge pin for optimal stress absorption. It has an integrated installation lifting eyelet with FLOW ARROW with defined breaking point for easy removal after installation. Installation Precautions: No direct mounting onto a pump, bend or elbow. Install a minimum of five times the nominal pipe diameter away from pumps, bends or elbows. (Example: Install a 4" valve 20" away from a pump discharge.) Note: Do not use valves without springs for pulsating applications.

  • PVC (ASTM D1784, Cell Classification 12454)
  • EPDM seals
  • 316 stainless steel spring
  • Can be installed horizontally or vertically
  • Easy installation due to integrated flange bolt guides for DIN2501 PN10 & ANSI Class 150
  • Does not require a spacer for full disc opening performance in SCH 80 pipes
  • Full seal at maximum 0.3 bar / 4.5 psi back pressure
  • Pressure rating: 150 psi @ 72°F, non-shock
  • Maximum temperature: 104°F
  • Meets NSF 61 standards
Stock Description Catalog Pg. Price
2" PVC Wafer Check Valve with EPDM Seals & SS Spring
21325
2" PVC Wafer Check Valve with EPDM Seals & SS Spring
$201.80​/Each
Save 5%2+$191.71/Each
Save 10%4+$181.62/Each
Save 15%12+$171.53/Each
P-383
$201.80​/Each
In Stock
2.5" PVC Wafer Check Valve with EPDM Seals & SS Spring
21327
2.5" PVC Wafer Check Valve with EPDM Seals & SS Spring
$228.76​/Each
Save 5%2+$217.32/Each
Save 10%4+$205.88/Each
Save 15%12+$194.44/Each
P-383
$228.76​/Each
In Stock
3" PVC Wafer Check Valve with EPDM Seals & SS Spring
21328
3" PVC Wafer Check Valve with EPDM Seals & SS Spring
$256.58​/Each
Save 5%2+$243.75/Each
Save 10%4+$230.92/Each
Save 15%12+$218.09/Each
P-383
$256.58​/Each
In Stock
4" PVC Wafer Check Valve with EPDM Seals & SS Spring
21329
4" PVC Wafer Check Valve with EPDM Seals & SS Spring
$328.19​/Each
Save 5%2+$311.78/Each
Save 10%4+$295.37/Each
Save 15%12+$278.96/Each
P-383
$328.19​/Each
Special Order
6" PVC Wafer Check Valve with EPDM Seals & SS Spring
21330
6" PVC Wafer Check Valve with EPDM Seals & SS Spring
$495.08​/Each
Save 5%2+$470.32/Each
Save 10%4+$445.57/Each
Save 15%12+$420.81/Each
P-383
$495.08​/Each
Special Order
8" PVC Wafer Check Valve with EPDM Seals & SS Spring
21332
8" PVC Wafer Check Valve with EPDM Seals & SS Spring
$812.83​/Each
Save 5%2+$772.18/Each
Save 10%4+$731.54/Each
Save 15%12+$690.90/Each
P-383
$812.83​/Each
On Order

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