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Product Specifications:
| Item | Check Valve |
| 3-a Certified | Not Rated |
| Application | General Purpose |
| Body Material | Stainless Steel |
| Check Mechanism | Swing |
| Connection Gender Side 2 | Female |
| Connection Gender-side 1 | Female |
| Connection Size-side 1 | 1 1/2" |
| Connection Size-side 2 | 1 1/2" |
| Connection Type | FNPT x FNPT |
| Connection Type-side 1 | NPT |
| Connection Type-side 2 | NPT |
| Cracking Pressure | 0.5 psi |
| Disc Material | Stainless Steel |
| Flow Coefficient | 35.2 |
| Flow Coefficient Cv | 35.2 |
| Flow Design | Single |
| For Media | Gas, Oil, Steam, Water |
| Full Flow | Yes |
| Grade | Grade 316 |
| Included Counterweight | No Counterweight |
| Length | 4.938" |
| Max. Operating Temp. | 400°F |
| Max. Pressure (cwp) | 800 psi |
| Max. Pressure-steam | 125 psi |
| Max. Steam Pressure | 125 psi WSP |
| Max. Temp. | 352°F |
| Max. Water Pressure | 800 psi |
| Mechanism And Body Design | Inline Spring |
| Media Temp. | -4°F to +400°F |
| Min. Operating Temp. | -4°F |
| Min. Temp. | 0°F |
| Mounting Orientation | Horizontal, Vertical |
| Overall Height | 2 7/8" |
| Overall Length | 4.93" |
| Pipe Size, Tube Size | 1 1/2" |
| Seat Material | PTFE |
| Silent Check | Standard |
| Spring Material | Stainless Steel |
| Vacuum Service Rating | Not Rated |
| Valve Body Material Grade | Grade 316 |
| Valve Body Style | Inline |
| Valve Series | S800 Series |
| Width | 2 7/8" |
Shipping Info:
| Ship weight (kg) | 1.53 |
| Ship height (cm) | 7.3 |
| Ship length (cm) | 12.54 |
| Ship width (cm) | 7.3 |
| Country of Origin | TW |
Product Variants
| Product | Model | Seat Material | Cracking Pressure | Max. Water Pressure | Overall Height | Pipe Size, Tube Size | Max. Steam Pressure | For Media | Media Temp. | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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S250-1 1/2 | FKM | 0.5 psi | 250 psi | 3.078" | 1 1/2" | Not Rated | Gas, Oil, Water | -4°F to +302°F | €104.44 | |
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S250-11/4 | FKM | 0.5 psi | 250 psi | 2.438" | 1 1/4" | Not Rated | Gas, Oil, Water | -4°F to +302°F | €86.00 | |
![]() |
S800-11/4 | PTFE | 0.5 psi | 800 psi | 2.469" | 1 1/4" | 125 psi WSP | Gas, Oil, Steam, Water | -4°F to +400°F | €229.74 | |
![]() |
S800-1 | PTFE | 0.5 psi | 800 psi | 2 1/8" | 1" | 125 psi WSP | Gas, Oil, Steam, Water | -4°F to +400°F | €141.30 | |
![]() |
S250-1 | FKM | 0.5 psi | 250 psi | 2.094" | 1" | Not Rated | Gas, Oil, Water | -4°F to +302°F | €64.49 | |
![]() |
S800-1/2 | PTFE | 0.5 psi | 800 psi | 1.344" | 1/2" | 125 psi WSP | Gas, Oil, Steam, Water | -4°F to +400°F | €84.08 | |
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S250-1/2 | FKM | 0.5 psi | 250 psi | 1.266" | 1/2" | Not Rated | Gas, Oil, Water | -4°F to +302°F | €50.67 |
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BONOMI S800-11/2 Check Valve, Single Flow, Inline Spring, 316 Stainless Steel, 1 1/2 Inch Pipe/Tube Size
€300.41 /unit


