Valva portae NRS
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Valva portae mollis obsignata ASME
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Valvula portae aquae marinae 2205
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BS 5163 NRS Valva portae cuneiformis resilientis
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Valva portae ferreae sedens resiliens DIN3352 F4 NRS...
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Valva portae cuneiformis subterranea
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Valva portae resilientis NRS ad extremitatem socketi
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...sedentes resilientes, caulis non surgentis, ignis exstinguens...