Norgren V64H-NND-RMN Pressure Relief Valve - PED Cat 0/1
Part Number: V64H-NND-RMN
Quick Summary
V64H-NND-RMN pressure relief valve protects compressed air systems by preventing over-pressurisation in demanding industrial lines. End users often face production downtime due to unexpected overpressure events and mis-timed relief actions, which this valve helps mitigate with fast, sensitive relief. The Olympian Plus family complies with PED Cat 0 (S.E.P.) and Cat 1 of the Pressure Equipment Directive 97/23/EC, supporting regulatory alignment and safer operation. Designed for reliable integration into existing pipelines, it supports easy installation and consistent performance, delivering business value through reduced downtime, safer exhaust handling, and improved system longevity. This makes it a solid choice for engineers seeking robust air-pressure protection plus straightforward maintenance in automated environments.
Product Information
Extended Description
V64H-NND-RMN Norgren: Olympian relief valves protect compressed air systems from over-pressurisation | High relief capacity, sensitive and accurate | Threaded relief port for silencer or piped exhaust | Norgren pressure relief valves comply with category 0(S.E.P.) and category 1 of the Pressure Equipment Directive 97/23/EC.
Medium
Compressed air
Operating Temperature
-20 ... 80 °C, -4 ... 176 °F
Port Size
Without Yoke
Gauge Port
Rc1/8
Maximum Inlet Pressure
17 bar
Outlet Pressure Adjustment
1 ... 10 bar, 15 ... 145 psi
Materials - Adjusting Knob
Plated steel
Materials - Body
Zinc
Materials - Bonnet
Zinc
Materials - Elastomers
Synthetic rubber
Dimensions - Height
74 mm
Dimensions - Length
205 mm
Dimensions - Width
74 mm
Weight
1.3 kg
Country of Origin
Czechia
Range
V64H
Series
Olympian Plus
Brand
IMI Norgren
1581-90
Tamper Resistant Cover
Y64A-4GA-N3N
Yoke assemblies
Y64A-4GA-N2N
Yoke assemblies
Y64A-4GA-N1N
Yoke assemblies
74504-50
Wall Bracket
V64H-KIT
Service kit V64H
MB004B
Quietaire heavy duty silencer male, R1/2
T40B1800
Quietaire sintered bronze silencer, R1/8
Feature: 1–10 bar outlet pressure adjustment. Business Impact: Precise relief at the required setpoint minimizes spurious trips and protects downstream equipment, reducing unplanned maintenance. Application: Packaging lines and assembly cells where consistent pressure thresholds are critical. Feature: Maximum inlet pressure of 17 bar. Business Impact: Provides a wide operating window while preserving component life, enabling safer operation of high-demand pneumatic circuits. Application: General plant air distribution and tool-agnostic pneumatic rails. Feature: Without yoke design (port without yoke) with Rc1/8 gauge port. Business Impact: Easier mounting and exhaust routing, reducing installation time and allowing flexible silencer or outlet configurations. Application: Retrofit projects and existing manifolds where space is constrained. Feature: Threaded relief port for silencers or piped exhaust. Business Impact: Quieter facility operation and improved exhaust management, lowering noise complaints and regulatory concerns. Application: OEM lines near assembly areas or service corridors. Feature: Durable materials – body and bonnet zinc, adjusting knob plated steel, elastomers. Business Impact: Long service life in challenging ambient conditions and temperatures, lowering replacement frequency. Application: Harsh factory environments with wide temperature swings. Feature: Compact dimensions and weight, 74 mm height, 205 mm length, 1.3 kg. Business Impact: Space-efficient installation in compact panels and compact valve housings, enabling easier retrofits. Application: Control panels and compact pneumatic manifolds. Feature: Parts ecosystem including service kit V64H-KIT and compatible silencers such as MB004B and T40B1800. Business Impact: Simplified maintenance planning and faster service, reducing downtime during preventive maintenance. Application: Long-term asset care and scheduled service windows.
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FAQs
For retrofits, place the valve where the outlet can exhaust through a silencer or pipe, using the Rc1/8 gauge port. The without-yoke design simplifies mounting on existing manifolds, and the wall bracket 74504-50 provides secure surface mounting where space is limited.
Verify a maximum inlet pressure of 17 bar and an adjustable outlet range of 1–10 bar (15–145 psi). Ensure the system’s downstream components are rated for the target outlet pressure and that the relief path accommodates the chosen exhaust option.
Yes. The valve belongs to the Olympian Plus family and complies with PED Cat 0 (S.E.P.) and Cat 1 under the 97/23/EC directive, supporting regulatory safety expectations in European installations.
Maintenance can be streamlined with the service kit V64H-KIT, and compatible silencers such as MB004B or T40B1800. Routine checks of the adjusting knob, elastomer seals, and exhaust path help maintain accurate relief and minimize leakage or setpoint drift.
Industrial automation lines, packaging machinery, pneumatic tooling, and compressed-air distribution systems benefit from precise relief control, compact footprint, and easy installation. The valve’s robust build and compatibility with standard Norgren accessories support durable, compliant operation in manufacturing environments.