Schubert & Salzer – Type 7045 Low Flow Valve

Overview

The Schubert & Salzer Type 7045 is a manual low flow valve designed for precise shutoff and regulation of very small flow rates in industrial applications. Available in 1/4″ and 1/2″ sizes, it features a handwheel actuator and is rated to PN 320 (4,641 psi), making it well-suited for high-pressure service with both liquids and gases.

Constructed entirely of stainless steel 316L with a metallic sealing seat assembly and metallic body seal, the Type 7045 delivers tight shutoff to ANSI Class IV leakage in a compact, durable package. Multiple fluid temperature versions extend its range from -148°F to +986°F, accommodating a wide spectrum of process conditions.

Features & Benefits

• Small and very small Cvs values with linear flow characteristic — enables precise throttling and regulation of minimal flow rates
• High-pressure rating to PN 320 (4,641 psi) — suitable for demanding high-pressure gas and liquid service
• Metallic sealing seat assembly (stainless steel 316L or carbide hardmetal) — provides durable, tight shutoff to ANSI Class IV leakage
• Metallic body seal construction — eliminates elastomeric seal concerns in aggressive or high-temperature media
• All stainless steel 316L body and head — resists corrosion in a wide range of chemical and process environments
• Handwheel actuator for manual operation — simple, direct shutoff and throttling without external power or signal
• Multiple temperature versions available — standard, HT530 high-temperature, and two low-temperature configurations
• Available in G-thread (ISO 228-1), NPT (ANSI B1.20.1), and socket weld connections — flexible installation options
• EC and UKCA Declarations of Conformity — supports international compliance requirements

Technical Specifications

• Sizes: 1/4″, 1/2″
• Nominal pressure: PN 320 (4,641 psi maximum)
• Cvs range (1/4″): 0.0031 to 0.20
• Cvs range (1/2″): 0.003 to 1.5
• Flow characteristic: Linear
• Leakage class: ANSI Class IV
• Fluid temperature — Standard version: -4°F to +410°F
• Fluid temperature — HT530 high-temperature version: -4°F to +986°F
• Fluid temperature — Low-temperature version 1: -40°F to +320°F
• Fluid temperature — Low-temperature version 2: -148°F to +410°F
• Body material: Stainless steel 1.4404 (316L)
• Head section & head section seal: Stainless steel 1.4404 (316L)
• Actuating stem: 1.4571 (316Ti)
• Needle: Stainless steel 316L or hardmetal
• Seat: Stainless steel 316L or hardmetal
• Packing: PTFE and PEEK compound
• Actuator: Stainless steel handwheel
• Connections: Pipe thread per ISO 228-1 (G-thread), NPT per ANSI B1.20.1, or socket weld
• Approvals: EC Declaration of Conformity, UKCA Declaration of Conformity

Applications

• Shutoff and regulation of small and very small liquid flow rates in industrial process systems
• High-pressure gas and liquid service up to PN 320 (4,641 psi)
• High-temperature process applications up to +986°F (HT530 version)
• Cryogenic and low-temperature service down to -148°F (low-temperature version 2)
• Chemical processing, petrochemical, and specialty gas systems
• Hydraulic and pneumatic test bench instrumentation
• Tire, rubber, and plastics manufacturing processes
• Energy, hydrogen, and water treatment applications

Type 7045 Accessories

• Limit Switch – Optional limit switch accessory for position feedback and remote monitoring
• Metal Bellows – Optional metal bellows upgrade for enhanced stem sealing in demanding applications

Documentation