013G8025 Danfoss RA 2000 – 1" Straight Valve Body
Product Overview
The Danfoss 013G8025 RA 2000 1" Straight Valve Body is a high-performance heating valve designed for hot water and low-pressure steam systems. Both inlet and outlet are 1", with the outlet featuring an MNPT union tailpiece for easy connection. Its nickel-plated body and sturdy EPDM valve disc ensure leak-free, reliable performance.
The valve comes with a plastic installation cap that protects the valve pushpin and allows manual control during installation. Space temperature can be easily adjusted using the dial numbered 1–5, corresponding to an adjustable temperature range of 45–85°F, clockwise or counterclockwise for comfortable heating. The valve remains normally open when no operator is mounted and features a replaceable packing gland assembly with grease cup for long-lasting lubrication.
✅ Key Features
-
✔️ 1” NPT straight valve body for easy piping integration
-
✔️ Inlet: 1" NPT / Outlet: 1" MNPT union tailpiece
-
✔️ 2.8 Cv flow rating for strong, consistent flow
-
✔️ Hot water & low-pressure steam compatible
-
✔️ Max working pressure: 145 psi (10 bar)
-
✔️ Differential pressure range: max 15 psi (1 bar)
-
✔️ Max temperature: 250°F
-
✔️ Nickel-plated construction for corrosion resistance
-
✔️ Replaceable packing gland assembly with grease cup for long-lasting lubrication
-
✔️ Sturdy EPDM rubber valve disc provides reliable sealing under differential pressures
-
✔️ Plastic installation cap included to protect valve pushpin and allow manual operation during installation
-
✔️ Manual operation available with separate hand knob accessory
-
✔️ Valve remains normally open without operator mounted
-
✔️ Dial control with numbered scale 1–5 for precise temperature adjustment (adjustable range 45–85°F)
-
✔️ Conforms to ASHRAE / ANSI Standard 102-1983
-
✔️ Series: RA 2000
📊 Specifications
| Specification | Details |
| Part Number |
013G8025 |
| Valve Type |
Straight Body |
| Connection Size |
1” NPT (Inlet & Outlet) |
| Outlet Type |
MNPT Union Tailpiece |
| Flow Coefficient (Cv) |
2.8 |
| System Compatibility |
Hot water & low-pressure steam |
| Max Working Pressure |
145 psi (10 bar) |
| Max Differential Pressure |
15 psi (1 bar) |
| Max Temperature |
250°F |
| Temperature Range |
45–85°F (adjustable, dial 1–5) |
| Max Sensor Temperature |
140°F |
| Valve Disc Material |
EPDM Rubber |
| Body Material |
Nickel Plated |
| Series |
RA 2000 |
| Manual Operation |
Optional with separate hand knob |
| Valve Operation |
Normally open without operator |
| Packing Gland |
Replaceable with grease cup |
| Installation Cap |
Plastic, included |
⚠️ Common Symptoms
-
Radiators, baseboards, or convectors not heating evenly
-
Valve leaking around body or tailpiece
-
Valve stuck fully open or closed
-
Whistling, hissing, or hammering noises in the system
-
Reduced heating efficiency
-
Temperature not responding to dial adjustment
❓ Frequently Asked Questions (FAQ)
Q: Can this valve be used on both hot water and steam systems?
A: Yes, it’s designed for hot water and low-pressure steam systems.
Q: Does this valve include a thermostatic operator?
A: No. Manual control during installation is provided by the plastic cap, and full manual operation is available with a separate hand knob accessory.
Q: How do I adjust the temperature?
A: Use the dial numbered 1–5, turning clockwise or counterclockwise. The dial corresponds to an adjustable temperature range of 45–85°F for precise, comfortable heating control.
Q: How does the packing gland work?
A: The replaceable packing gland assembly can be serviced while the system is in operation. Its grease cup keeps the o-ring packing lubricated for life.
Q: Does the valve remain open without an operator?
A: Yes, the valve is normally open until a hand knob or operator is mounted.
🛒 Shopping Tips
-
Confirm system type: hot water or low-pressure steam
-
Ensure 1” NPT pipe connections for both inlet and outlet
-
Keep a spare manual hand knob if full manual operation is needed
-
Inspect MNPT union tailpiece and connections for leaks before installation
-
Ideal for residential or commercial radiators, baseboards, and convectors