Swagelok SS-1RF4 Integral-Bonnet Needle Valve, 1/4 in. FNPT, 0.73 Cv

Reach for the SS-1RF4 when you need tight, repeatable throttling in your instrument and sample lines. This 1 Series integral-bonnet needle valve forges the bonnet right into the body, so you get a leak-tight, compact package that stands up to real plant conditions. The regulating stem gives you smooth, precise flow control across a 0.73 Cv range, and the live-loaded packing keeps your seal tight through thermal cycling and vibration. You get 1/4 in. female NPT ports on both ends, 316 stainless construction that shrugs off corrosion, and a working pressure of 5000 psig at room temperature. It handles temperatures from -65 to 600 degrees F, so it earns its spot on steam, gas, and analyzer service alike. Count on this valve for your refinery, petrochemical, and power-gen isolation and metering points. Need it configured for your exact application? Call Collins-Oliver for a quote.

Key Features

• 1 Series integral-bonnet design forged into the body for a leak-tight, compact valve
• Regulating stem delivers precise, repeatable throttling up to 0.73 Cv
• 1/4 in. female NPT end connections on both inlet and outlet
• Live-loaded packing system holds the seal through thermal cycling and vibration
• 316 stainless steel body resists corrosion in harsh process environments
• Rated 5000 psig at 100 degrees F, with service from -65 to 600 degrees F

Technical Specifications

• Series: Integral-Bonnet Needle Valve, 1 Series (straight pattern)
• End Connections: 1/4 in. female NPT (both ports)
• Orifice: 0.250 in.
• Cv: 0.73 maximum
• Max Working Pressure: 5000 psig at 100 degrees F (3130 psig at 600 degrees F)
• Temperature Rating: -65 to 600 degrees F (-53 to 315 degrees C)
• Stem Type: Regulating
• Packing: Live-loaded system
• Body Material: 316 stainless steel
• Handle: Phenolic knob
• Cleaning: Standard Cleaning and Packaging (SC-10)