Suttner ST-261 SI Unloader Valves with Chemical Injector & Micro Switch 1.8- 4 Pack
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$603.97
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Product Information
Prepare your fleet with this 4 pack of Unloaders. This Unloader Valve with a Chemical Injector, Micro Switch and a 1.8 Orifice is used for adjusting the maximum working pressure and safe guarding the high pressure water pipes. Ideal for steam combination applications.
Product Details
Used for adjusting the maximum working pressure and safe guarding the high pressure water pipes. Ideal for steam combination applications. Low pressure limit eliminates need for additional metering devices.
Features include:
- Built-in exclusive down stream (venturi-type) injector with built in orifice provides more precise siphon rate
- Only tamper-resistant operator adjustable valve in the industry which allows limit setting on both maximum pressure and minimum pressure
- Straight flow-through design minimizes pressure loss through valve
- Working components constructed of high-grade stainless steel. PTFE and Viton seals for maximum heat and chemical resistance
- Internal bypass valve can be easily accessed and repaired without removing unloader from unit
- 500 PSI Min
Specifications:
- Injector Flow Rate: 1.50-2.25
- Orifice Size: 1.8
- Pressure: 3600 PSI
- Temperature: 176 F
- Flow Rate: 8 GPM
- Inlet: 3/8″ FNPT
- Outlet: 3/8″ FNPT
- Bypass Connection: 1/4″ FNPT
Shipping & Delivery
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Fast nationwide shipping via UPS
Most orders arrive within 5–10 business days. -
Direct-from-manufacturer items may take up to 14 business days
If a product will take longer than expected, a PowerWash.com account executive will contact you. -
Backorder notifications
If an item becomes unavailable or delayed, our team will notify you immediately with options. -
Freight delivery for large equipment
Oversized items ship by truck freight. Lift-gate service is available if needed. -
Alaska & Hawaii shipping
Delivery to AK/HI may take up to 30 business days. (Some chemical products cannot ship to AK/HI.) -
International shipping available
We ship to most countries worldwide. Call 1-800-433-2113 for rates. -
Order minimum
Orders under $15 may incur a minimum order fee. -
Track your order anytime
You can check your order status using the Orders & Returns page.
Returns & Warranty
30-Day Return Window (Unused Items)
Unused products in original packaging can be returned within 30 days of delivery.
Simple Return Process
Just contact our team to receive an RMA (Return Authorization) before sending anything back.
Restocking Fee
Returns may be subject to a 20% restocking fee.
Non-Returnable Items
Due to safety and usage factors, the following items cannot be returned:
– Pressure washers (covered under warranty only)
– Chemicals / hazmat products
– Custom or special-order equipment
Manufacturer Warranties Apply
Many products are backed by manufacturer warranties (pumps, engines, accessories, etc.).
Coverage varies by brand and product type.
Defective or Damaged Items
If something arrives damaged or defective, contact us immediately so we can make it right.
Support
Support & Questions
Talk to a real pressure washing expert
Our team helps contractors choose the right equipment, chemicals, and setup.
Need help before ordering?
We can help you confirm:
– Proper sizing (GPM, PSI, fittings)
– Product compatibility
– Best setup for your job
Support after purchase
We’re here to help with setup, usage, and troubleshooting.
Call or speak with our team
1-800-433-2113
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