INTEGRAL-BONNET NEEDLE VALVES

Certified for ISO 15848-1:2006(E) Straight and angle pattern Stainless steel or brass body construction MAWP* 5000 psi (345 bar) MAWT** 446°F (230°C) Flow coefficient (Cv) 0.09 to 1.8 Sizes: 1/8" to 3/4" (3mm-12mm) Round plastic, round aluminum, and metal bar handles Variety of stem types Packing bolt for easy panel mounting No packing disassembly is required Chevron stem packing provides low operation torques Belleville washers compensate packing wear Special synthetic, anti-seize stem lubricant for resistance to high temperature * Maximum allowed working pressure ** Maximum allowed working...

GENERAL The H-300U Series is an advanced high-pressure instrumentation needle valve for regulating service. The packing bolt design, featuring easy mounting, provides the best solution for instrumentation panels. This compact valve enables a relatively high level of flow regulation and long-life service. Special stem surface treatment, based on low temperature carbon diffusion, enables higher surface hardness with improved wear resistance, resistance to system contaminants and low operational torque. STANDARD CONFIGURATION DIMENSIONS Basic Orifice Cv Ordering mm (in) Number S/A Connection Size...

STEM OPTIONS H-300U needle valves are available with a choice of stem tips: Used where some degree of flow control is required. Standard stem tip used for the on/off operation in general purpose liquids and gas service. Soft Seat Stem (PCTFE) A soft seat tip requires a lower sitting torque than a metal stem tip. The best choice for clean gaseous high pressure applications; MAWT is 200°F (93°C). Typically used in high-cycle applications to extend valve life and prevent stem rotation inside the body tip, a suitable selection for gaseous high-pressure applications. FLOW DATA: FLOW COEFFICIENT VS....

CLEANING & PACKAGING PACKING ADJUSTMENT Every H-300U series needle valve is cleaned in accordance with Standard Cleaning and Packaging (Procedure 8184). Oxygen Clean & Lubricant-Free Cleaning and Packaging in accordance with Special Cleaning and Packaging (Procedure 8185), is available as an option. The H-300U Series Needle Valve design has been tested for proof and burst. Every H-300U Needle Valve is factory tested with nitrogen at 1000 psi (69 bar) for leakage through the packing and seat. Due to the varied service applications of the valve, packing adjustment may occasionally be necessary....