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Refrigeration Product Range

Refrigeration Product Range
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Refrigeration Product Range

Product catalog summary
Company Overview
Seetru Limited, founded in 1949, is a manufacturer of high-quality liquid level gauges and pressure relief devices. Known for its innovative Seetru Tutchtite® sealing system, the company enhances safety valve performance. Seetru's products are globally approved and distributed.
Product Range
Seetru manufactures safety relief and ancillary valves for applications such as compressed air, industrial gases, and refrigerants. Their products comply with international standards like BS 6759, AD-Merkblatt A2, ISO 4126, and ASME Section VIII, and meet the European Pressure Equipment Directive 97/23/EC, carrying CE and UV stamps.
Special Purpose Valves
Seetru offers specialized valves for the compressed air industry and medium-sized industrial diesel engines, including minimum pressure and air starting valves. Their liquid level gauges include sight gauges and magnetic float by-pass gauges, with options for electronic remote reading.
Design and Development
Seetru's design and development department, with TÜV approved testing facilities, offers bespoke design, advisory, and manufacturing services for new applications.
Seetru 'RA' & 'RP' Range
The 'RA' and 'RP' safety valves are designed for refrigeration, offering compact design and high sealing performance. They are leak-tested and suitable for temperatures from -30°C to +200°C, manufactured to international standards including TÜV, ASME, and PED.
RP 319 Specifications
The RP 319 is a 10 mm nominal bore inline safety relief valve for refrigerants, approved by PED, TÜV, and ASME. It operates within a pressure range of 13.50 to 50.00 bar g and a temperature range of -30°C to 200°C, featuring a flow area of 78.54 mm².
RA 81806 Specifications
The RA 81806 is a 6 mm nominal bore atmospheric discharge safety relief valve for refrigerants, approved by PED and TÜV, operating within a pressure range of 2.80 to 36.00 bar g and a temperature range of -30°C to 200°C.
RP 63610, 63710, 63110 Specifications
These are 10 mm nominal bore piped discharge safety relief valves for refrigerants, approved by PED, TÜV, and ASME, operating within a pressure range of 7.00 to 55.20 bar g and a temperature range of -30°C to 200°C.
Materials of Construction
The valves are constructed from materials including brass, stainless steel, bronze, and aluminum alloy. Seal materials include perfluoroelastomer and ethylene propylene.
Performance and Approvals
The valves operate stably at flows down to 50% of their rated capacity, with a maximum permissible built-up back pressure of 10% of the set pressure. They are approved under standards including TÜV Germany, BS EN ISO 4126-1, ASME Section VIII Division 1, and PED 97/23/EC.
Additional Features
The document mentions the Seetru Change Over Valve (COV) for applications where plant shutdown is not feasible, allowing maintenance without interrupting operations.
Graphical Data
Graphs illustrate the discharge capacity of air at various pressures, highlighting flow rates in kg/hour, scfm, and litres/sec.
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Catalog excerpts

Refrigeration Product Range-1

Safety Relief Valves and Liquid Level Gauges Ver.1

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Refrigeration Product Range-2

Seetru Limited Quality, Innovation & Service Seetru Limited was founded in 1949 with the aim of producing the nest liquid level gauges so customers could see the true level even under the most severe conditions. This philosophy of making the nest through innovation continued with the introduction of the Seetru range of pressure relief devices, circa 1950; the Seetru Tutchtite® sealing system revolutionized the safety valve market with valves that do not leak even after repeated popping and for high pressures. Today, Seetru have an extensive range of pressure relief valves and liquid level gauges...

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Refrigeration Product Range-3

The Seetru ‘RA’ & ‘RP’ Range The Seetru range of safety valves for refrigeration applications are designed to meet the needs of the refrigeration industry, offering safety valve technology for compressor manufacturers, industrial refrigeration, commercial refrigeration, ice making systems and air conditioning. The valves are compact and designed with bonded sealing technology and the highest possible sealing performance to comply with most stringent environmental standards. Each valve is leak tested to better than 10-5 mbar litres/sec on Helium. This is equivalent to a leakage rate of less than...

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Refrigeration Product Range-4

That's Safety! SeetruLimited Inlet Connections SPRING ADJUSTER NAMEPLATE BRASS CZ121 ST. STEEL 1.4310 (302) BRASS CZ121 ALUMINIUM ALLOY That's Safety! SeetruLimited GP 359 That's Safety! That's Safety! 28.27mm (6 mm inlet bore diameter) SeetruLimited SeetruLimited Flow area ef Valve alve ases pproved Temperature range • Relieving pressure is set pressure +10% 6 mm Nominal Bore Atmospheric Discharge Safety Relief Valve 5 mm Nominal Bore Piped Discharge Safety Relief Valve For Refrigerants For Compressed Air & Gases PED, TÜV Approved PED Approved Notes • Relieving pressure is set pressure +10%...

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Refrigeration Product Range-5

Compressed Air & Gas Refrigeration RP 636, 646, 656 359 GP That's Safety! SeetruLimited ALUMINIUM ALLOY ALUMINIUM ALLOY WIRE & SEAL Notes 10 • Maximum permissible built up back pressure is 10% of set pressure mm Nominal Bore Piped Discharge Safety Relief Valve 5 mm Nominal Bore Piped Discharge Safety Relief Valve For Refrigerants • Stable operation on ows down to 50% of valve related capacity SeetruLimited For Compressed Air & Gases • RelievingSeetruLimited pressure is set pressure +10% (0.3 bar g. below 1.55 bar g.) PED, TÜV, ASME Approved • Reseating pressure is set pressure -10% (0.3 bar g....

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Refrigeration Product Range-6

That's Safety! SeetruLimited Pressure range Seal Materials Perfluoroelastomer INLET SEAT SEAL SEAL RETAINER Flow area ALUMINIUM ALLOY ALUMINIUM ALLOY WIRE & SEAL • Maximum permissible built up back pressure is 10% of set pressure • Stable operation on flows down to 50% of valve rated capacity • Relieving pressure is set pressure +10% (0.3 bar g. below 1.40 bar g.) That's Safety! SeetruLimited • Reseating pressure is set pressure -10% (0.3 bar g. minimum) Discharge capacity’s Discharge Capacity's RP Discharge Capacity's 63613, 63713, 63113 That's Safety! SeetruLimited Notes 13 • Maximum permissible...

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Refrigeration Product Range-7

Compressed Air & Gas Refrigeration RP 636, 646, 656 359 GP That's Safety! SeetruLimited Pressure range WIRE & SEAL • Maximum permissible built up back pressure is 10% of set pressure • Stable operation on flows down to 50% of valve rated capacity • Relieving pressure is set pressure +10% That's Safety! SeetruLimited • Reseating pressure is set pressure -10% (0.3 bar g. minimum) Seetru Limited Albion Dockside Works Bristol BS1 6UT England 18 mm Nominal Bore Piped Discharge Safety Relief Valve For Refrigerants PED, TÜV, ASME Approved Discharge Capacity's minal Bore Piped 10 mm Safety Relief Valve...

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Refrigeration Product Range-8

Compressed Air & Gas Refrigeration COV (Change Over Valve) GP 359 The Seetru COV (Change Over Valve) This valve is used if a plant shutdown is impossible or undesirable for process engineering or commercial reasons. With change-over valves it is possible to switch over between parallel safety valves without interrupting operation, so that maintenance work can be carried out on each safety valve in turn. This valve is available with a wide range of elastomers as standard, other seals are available on request. Flanged inlet connections are also available on request. Typically used in the refrigeration...

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Refrigeration Product Range-9

The Seetru ‘G33’ Reex Gauge The G33 Reex gauge is a heavy duty (at glass) liquid level gauge, suitable for high pressure/temperature combinations. The modular design is made up of compact and robust standard stainless steel precision cast elements. Refrigerant industry isolating valves are available in a number of exible congurations offering end mounted, side mounted, rear entry connections, with full centre to centre visibility can be secured with minimum overall length. G33 Reex specications Connections Minimum: Maximum: Valve types Refrigeration industry isolation valves Maximum Temperature...

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Refrigeration Product Range-10

The Seetru ‘G35’ Seemag® Magnetic Gauge The Seetru Seemag® tank content indicator or gauge is a high quality yet economical magnetic level indicator. Its unique design offers considerable advantages over conventional magnetic gauges including accurate step-less reading with all round visibility and the option of high/low level alarms with remote digital reading. G35 Seemag® specications Connections Threaded connections, anged connections or stub pipe for welding Minimum: Maximum: Valve types Valveless (¼ Turn ball isolation valves available) Maximum Temperature Maximum Pressure Magnetic bypass...

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Refrigeration Product Range-11

Other Products & Services from the Seetru Limited Organisation Engineering Services The contents of this leaet do not constitute an offer. SEETRU LIMITED reserve the right while maintaining the essential characteristics of the equipment and services described and illustrated to amend specication without notice. Seetru Limited Albion Dockside Works Bristol. BS1 6UT Tel: +44 (0) 117 927 9204 Email: [email protected]

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All Seetru Limited catalogs and technical brochures

  1. CP 93625

    2  Pages

  2. G23

    1  Page

  3. G35

    1  Page

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.